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News & Articles on Wind Energy

This is an archive of articles and news on both large and small wind turbines, wind energy & the environment, and links to topics on the history of wind energy.

I've been working with wind energy since 1976 and my professional experience in the subject runs the gamut from wind resource assessment to installing and testing small wind turbines. I continue to follow the industry and analyze its growth and increasing contribution to renewable electricity generation worldwide.

Erickson decision: wind turbines can be built in Ontario

August 18, 2011,   by Dianne Saxe

Wind turbines can be built in Ontario, despite opponents’ claims of adverse health effects. . .

Category: Wind Noise, Health, & Safety

Hybrid Electric Home by Craig Toepfer--A review

August 16, 2011,   by Paul Gipe

Toepfer is one of the pioneers of small wind in the US. He, like myself, began their careers by scouring the Great Plains for junk windmills.[more]

Category: book Reviews, News on Small Wind

Wind Power: 20 Projects to Make with Paper-a Review

August 16, 2011,   by Paul Gipe

Wind Power: 20 Projects to Make with Paper by Clive Dobson is a great little book with a wonderful collection of photos and diagrams. I learn something every time I pick up a book, even a children's...[more]

Category: book Reviews, News on Small Wind

Geothermal Power Plants by Ronald DiPippo

August 16, 2011,   by Paul Gipe

Geothermal Power Plants is the book I'd been looking for--an engineering treatise on geothermal. I'd written about geothermal in the mid 1980s, but I hadn't kept up with the industry and needed a...[more]

Category: News on Geothermal, Book Reviews on Geothermal Energy

Community Colleges Offering Wind Courses in North America Contacts

August 12, 2011,   by Paul Gipe

While this page was created to primarily aid community college instructors in contacting each other, there are several listings from the university community and private companies that offer courses...[more]

Category: Wind Training Courses

Lisa Linowes and the Disinformation of Industrial Wind Action Group

August 12, 2011,  

Category: Debunking Myths about Wind Energy

Skystream Delivers Less Than Advertised at French Test Site

August 3, 2011,   by Paul Gipe

But Energy Estimates Not Off by Much[more]

Category: Small Turbine Product Reviews

Windtronics Turbine Removed from French Test Site

August 3, 2011,   by Paul Gipe

A Windtronics wind turbine under test at SEPEN in southern France was removed within the first month of operation, according to Jay Hudnall, an expert in the French small wind turbine industry.[more]

Category: Rooftop & Urban Wind, Windtronics

Presentation by Paul Gipe for PG&E Zero Net Energy Homes, Introduction

July 21, 2011,   by Paul Gipe

Plus Energy Building: Wind Energy, Small Wind, & Community Wind

Category: News on Small Wind, Presentations by Paul Gipe

Presentation by Paul Gipe for PG&E Zero Net Energy Homes, Sizing

July 21, 2011,   by Paul Gipe

Category: News on Small Wind, Presentations by Paul Gipe

Honeywell Windtronics Wind Tunnel Comments

July 21, 2011,   by Paul Gipe

Because of my early postings (December 30, 2008) about the Honeywell Windtronics turbine, other observers have been sending me their comments on the product.[more]

Category: Rooftop & Urban Wind

Honeywell Windtronics Update on Recommendation for 12 mph Sites

July 19, 2011,   by Paul Gipe

After posting my article Honeywell Windtronics WT6500 Report from the Field, the president of the company contacted me to note that their web site clearly says that they recommend using the turbine...[more]

Category: Rooftop & Urban Wind, Windtronics

Presentation by Paul Gipe at Intersolar 2011 on Feed-in Tariff Best Practice: Avoiding Solar Myopia

July 7, 2011,   by Paul Gipe

San Francisco, California

Category: Presentations by Paul Gipe

Honeywell Windtronics WT6500: Report from the Field

July 6, 2011,   by Paul Gipe

Retired civil engineer Lynn Shafer wants to do the right thing and leave the world a better place for future generations. In 2010 he installed 5 kW of solar PV on his house near Sedalia, Missouri....[more]

Category: Rooftop & Urban Wind, Windtronics

Elena Diffuser Augmented Wind Turbine (DAWT) Update

June 28, 2011,  

Zero, Null, Nada Generation in One Year--After one full year of operation, the Elena DAWT has produced zero net electricity.

Category: Shrouded & Ducted Wind Turbines, Elena Energie

Community Colleges Offering Wind Courses in North America

June 23, 2011,   by Paul Gipe

Because of the rapidly growing demand for windsmiths (wind energy technicians) in North America, several community colleges have begun offering associate degree programs. Several of these programs,...[more]

Category: News on Small Wind, Wind Training Courses, News on Large Wind

Giant Germany Utility Swears Off New Coal

June 15, 2011,   by Paul Gipe

  RWE, one of Germany's biggest utilities, has announced it will not build any more new coal plants. RWE currently gets 2/3 of its generation from coal. RWE by 2025 will get only 1/4 of its...[more]

Category: Debunking Myths about Wind Energy, Fossil Fuels

Planet Save: In Atlantic City, Wind Turbines Attract Tourists

June 12, 2011,   by Zachary Shahan

You hear all kinds of propaganda about people not liking the site of wind turbines. Sure, some people don’t, but a lot of people love seeing these beautiful, massive, clean energy pinwheels. This is...

Category: Debunking Myths about Wind Energy

Philly.com: Atlantic City wind turbines become a tourist attraction

June 12, 2011,   by Jacqueline L. Urgo

The 32-story turbines of the Jersey-Atlantic Wind Farm have so dramatically changed Atlantic City's skyline - perhaps more than any casino could - that tourists haven't stopped asking questions about...

Category: Debunking Myths about Wind Energy

Ontario’s Feed-in Tariffs: Setting the Standard in North America

June 4, 2011,   by Paul Gipe

Presentation by Paul Gipe for VerdeXchange, June 6, 2011, Toronto Ontario, including a proposal for revisions to Ontario's groundbreaking feed-in tariffs . . .

Category: Ontario FIT, Presentations by Paul Gipe

Blowing Smoke: Correcting Anti-Wind Myths in Ontario by Environmental Defence

June 2, 2011,   by Environmental Defence

This report aims to correct the main myths of these anti-wind activists, using credible scientific, mainstream sources to correct the record and to give communities the information they need to make...

Category: Debunking Myths about Wind Energy

Technical Comparators: Swept Area preferred over Rated Power

June 1, 2011,   by Geoff Henderson

Windflow Technology Newsletter Nº 31, June 2011 Some people use capacity factor as the basis for comparing wind farms and turbines. Capacity factor is the average kilowatts produced over a period,...[more]

Category: News on Wind Energy, News on Large Wind

Centre for Sustainable Energy: Common concerns about wind power-

May 1, 2011,  

A research paper commissioned by CSE drawing on peer-reviewed articles and government-funded analysis to address some of the concerns that are expressed in relation to wind power. . .

Category: Great Britain, Debunking Myths about Wind Energy

Wind power topics at Euro Tribune by Jérôme Guillet

April 13, 2011,   by Jérôme Guillet

Below the fold is a (hopefully) complete list of ET diaries and stories related to wind power. . .

Category: Debunking Myths about Wind Energy, News on Wind Energy

Toronto Star: Doctors and nurses back wind and solar power

April 11, 2011,   by John Spears

Ontario’s family physicians and nurses are launching an advertising campaign to defend wind and solar power. . .

Category: Wind Noise, Health, & Safety

Financing European energy infrastructure by Jérôme Guillet

March 27, 2011,   by Jérôme Guillet

Another insightful article by a financier who raises debt for large offshore wind projects. . . "There are no "neutral" policy choices, and energy will always be political - and it's time what the...

Category: News on Wind Energy

After Fukushima: a new dash for gas? Really? by Jérôme Guillet--

March 23, 2011,   by Jérôme Guillet

The final outcome and cost of the nuclear accident at Fukushima are yet to be determined but the obituary of the nuclear industry has already been written, and one competing source of power has...

Category: News on Wind Energy

Presentation by Paul Gipe Dalhousie University Library on Bringing the Renewable Revolution to Nova Scotia

March 16, 2011,   by Paul Gipe

Category: New Brunswick FIT, Presentations by Paul Gipe

Presentation by Paul Gipe on Feed-in Tariff Design, Fredericton, New Brunswick

March 15, 2011,   by Paul Gipe

Category: New Brunswick FIT, Presentations by Paul Gipe

Presentation by Paul Gipe on Wind 101 for New Brunswick Young Farmers

March 15, 2011,   by Paul Gipe

Category: Presentations by Paul Gipe

Keynote Presentation by Paul Gipe on Advanced Renewable Tariffs, Fredericton, New Brunswick

March 14, 2011,   by Paul Gipe

Category: New Brunswick FIT, Presentations by Paul Gipe

Presentation by Paul Gipe, Winnipeg Public Library

March 9, 2011,   by Paul Gipe

Category: Manitoba FIT, Presentations by Paul Gipe

Presentation by Paul Gipe for the Manitoba Environmental Industries Association

March 9, 2011,   by Paul Gipe

Category: Manitoba FIT, Presentations by Paul Gipe

North German State to Double Wind Energy on Land

February 21, 2011,   by Paul Gipe

Conservatives Increasing New Renewables from 50% to 100% of Electricity Highest Concentration of Wind in Germany--Most Locally Owned As Much Wind Generation as California[more]

Category: Germany FIT, News on Large Wind, News on Community Power

Presentation by Paul Gipe at the Husum Small Wind Summit 2010

February 19, 2011,   by Paul Gipe

What Small Wind Needs to Make Its Mark

Category: News on Small Wind, Presentations by Paul Gipe

Polls: Anti-Wind NIMBYs Are Small Minority

February 9, 2011,   by Brian Keane

The media frenzy over unhappy wind-turbine neighbours is downright irresponsible mainly because multiple studies show that wind turbine critics fall squarely in the minority. . .

Category: Debunking Myths about Wind Energy

Charts of Field Tests on Air Breeze BR0001068

February 1, 2011,   by Paul Gipe

We have operated an Air Breeze BR0001068 since December 2007. The turbine has performed well without any problems and significantly quieter than previous versions in the Air series of micro wind...[more]

Category: Wulf Small Wind Turbine Test Field Results

Merit Order Effect: Impact of Wind Generation on Wholesale Electricity Costs in 2011 in Ireland

February 1, 2011,   by Dr. Eoin Clifford (EirGrid)

"The analysis showed that wind generation lowers wholesale prices by over €70 million, which almost exactly offsets the costs of the Public Service Obligation (PSO) levy and other costs associated...

Category: Grid Integration

John Farrell: Distributed Wind Energy in Germany--

January 28, 2011,   by John Farrell

Of Germany's 27,000 megawatts of wind power projects (3rd most in the world and most per capita), nearly 90% are smaller than 20 megawatts, with most between 1 and 5 megawatts.

Category: News on Wind Energy

Jérôme Guillet: ExxonMobil says wind is cheapest form of electricity generation--

January 28, 2011,   by Jérôme Guillet

So the conclusion can be that wind costs roughly the same as traditional power sources - with none of their drawbacks, whether troublesome exporters to deal with, dangerous mining practices for local...

Category: News on Wind Energy

Putting Wind Turbines on City Rooftops-Cleanfield Energy Gaining International Attention

December 16, 2010,  

Press release claiming that Cleanfield was installing its VAWTs on rooftops "around the world." The press release implies Cleanfield's association with McMaster University and Ontario's Centres of...[more]

Category: Cleanfield, Rooftop & Urban Wind

Low Frequency Noise and Infrasound Associated with Wind Turbine Generator Systems A Literature Review

December 10, 2010,   by Ontario Ministry of the Environment

Low Frequency Noise and Infrasound Associated with Wind Turbine Generator Systems A Literature Review. . .

Category: Wind Noise, Health, & Safety

Hart & Jacobson: A Monte Carlo Approach to Generator Portfolio Planning and Carbon Emissions Assessments of Systems with Large Penetrations of Variable Renewables

November 30, 2010,  

A low carbon portfolio is produced for this system that is capable of achieving an 80% reduction in electric power sector carbon emissions from 2005 levels and supplying over 99% of the annual...

Category: Grid Integration

Wind Turbine Generator System Acoustic Noise Test Report for the ARE 442 Wind Turbine

November 1, 2010,   by A. Huskey and J. van Dam

The acoustic noise test was conducted to the IEC 61400-11 Edition 2.1.

Category: Small Turbine Testing

Presentation by Paul Gipe to the Bay Area Council of Governments on Advanced Renewable Tariffs for an Energy Revolution

October 26, 2010,   by Paul Gipe

San Francisco, California

Category: Presentations by Paul Gipe

Presentation by Paul Gipe on Advanced Renewable Tariffs for New York State

October 20, 2010,   by Paul Gipe

Category: New York State FIT , Presentations by Paul Gipe

Presentation by Paul Gipe on FITs for New York State

October 19, 2010,   by Paul Gipe

Category: Presentations by Paul Gipe

Presentation by Paul Gipe 24 September 2010 to the City of Edmonton

September 25, 2010,   by Paul Gipe

Category: Alberta FIT, Presentations by Paul Gipe

Presentation by Paul Gipe 21 September 2010 to the Alberta Dept. of Energy

September 23, 2010,   by Paul Gipe

Category: Alberta FIT, Presentations by Paul Gipe

Presentation by Paul Gipe 21 September 2010 to the UofA Energy Club

September 23, 2010,   by Paul Gipe

Category: Alberta FIT, Presentations by Paul Gipe

Presentation by Paul Gipe 22 September 2010 to the Alberta Dept. of Environment

September 23, 2010,   by Paul Gipe

Category: Alberta FIT, Presentations by Paul Gipe

Presentation by Paul Gipe 22 September 2010 for the Solar Energy Society of Alberta at Grant MacEwan University

September 23, 2010,   by Paul Gipe

Category: Alberta FIT, Presentations by Paul Gipe

Presentation by Paul Gipe 23 September 2010 to Sustainable Energy Alliance in Red Deer

September 23, 2010,   by Paul Gipe

Category: Alberta FIT, Presentations by Paul Gipe

MORE ‘Green Gone Wrong’: Greenway Self-Park WTG installation, Chicago, IL, USA

September 20, 2010,   by Kimberly King

Based on what I have been able to locate, I think this structure is another example of ‘Green Gone Wrong.’ I reiterate, I think we need to be mindful about NOT over-hyping some green(er)...

Category: Rooftop & Urban Wind

Presentation by Paul Gipe to the Colorado Governor's Energy Office

September 20, 2010,   by Paul Gipe

Category: Colorado FIT, Presentations by Paul Gipe

Presentation by Paul Gipe on Advanced Renewable Tariffs for the South Denver Chamber of Commerce

September 17, 2010,   by Paul Gipe

Category: Colorado FIT, Presentations by Paul Gipe

Presentation by Paul Gipe on Advanced Renewable Tariffs for the Alliance for Sustainable Colorado

September 17, 2010,   by Paul Gipe

Category: Colorado FIT, Presentations by Paul Gipe

Presentation by Paul Gipe on Feed-in Tariffs for the City of Fort Collins

September 16, 2010,   by Paul Gipe

Category: Colorado FIT, Presentations by Paul Gipe

Presentation by Paul Gipe on Advanced Renewable Tariffs for Boulder Clean Energy Action

September 16, 2010,   by Paul Gipe

Category: Colorado FIT, Presentations by Paul Gipe

Presentation by Paul Gipe Durango Community Power Workshop

September 15, 2010,   by Paul Gipe

Category: Colorado FIT, Presentations by Paul Gipe

Presentation by Paul Gipe for the Durango Green Business Roundtable

September 15, 2010,   by Paul Gipe

Category: Colorado FIT, Presentations by Paul Gipe

Presentation by Paul Gipe on FITs for La Plata Rural Electric Cooperative (Durango)

September 15, 2010,   by Paul Gipe

Category: Colorado FIT, Presentations by Paul Gipe

Presentation by Paul Gipe to the California Green Assembly

September 11, 2010,   by Paul Gipe

Category: California FIT, Presentations by Paul Gipe

Landowner's Guide to Wind Energy in Alberta

September 1, 2010,   by Tim Weis, Alex Doukas, and Kristi Anderson

This guide is for landowners in Alberta who are considering wind energy projects on their land. Whether you are interested in erecting and owning your own wind turbine, leasing land to...

Category: Landowner Easements & Royalty Payments, News on Large Wind

Kansas Worst Turbine Install

August 3, 2010,   by Paul Gipe

The following is another submission by Stewart Russell for the worst turbine install in history. This one is on a bridge in Kansas City and uses two of Southwest Windpower's Air series turbines. As...[more]

Category: Worst Turbine Install in History

French Form Small Wind Group

July 30, 2010,   by Paul Gipe

On May 5th, 2010 two-dozen French small wind advocates gathered at the SEPEN test site near Narbonne, France. The meeting was called to discuss the future of small wind in France and whether there...[more]

Category: News on Small Wind

Bill Koch: The Dirty Money Behind Cape Wind Opposition

July 22, 2010,  

Bill Koch has a nearly five-year history of opposing one of largest renewable energy initiatives in America. Cape Wind, a project to develop the country’s first offshore wind farm, has received...

Category: Wind Energy & the Environment

Brief Summary of World Wind Energy Stats 2009

July 20, 2010,  

  Feed Laws Lead Feed Laws produced ~1/2 of world wind capacity ¾ California wind capacity from Feed Law World Wind 2009 ~150,000 MW Total ~40,000 MW added in 2009 ~300 TWh/yr 20-40% Growth/yr...[more]

Category: News on Wind Energy, Wind Statistics

Saskatchewan Court Decision on Claims of Impact from Proposed Wind Turbines

July 10, 2010,  

The decision effectively dismisses claims of potential impact and the credibility of witnesses for the plaintiffs.

Category: Wind Noise, Health, & Safety

Green Investing: This is Why You Avoid Story Stocks

May 24, 2010,   by John Rubino

In retrospect, a little more skepticism would have been in order, because this is exactly the kind of thing you see constantly in hot markets. Revolutionary technology, lots of interest that will...

Category: Windtamer

New Report From Ontario's Chief Medical Officer Of Health Says There Is No Direct Causal Link Between Wind Turbines And Adverse Health Effects

May 20, 2010,   by Dr. Arlene King, Ontario's Chief Medical Officer of Health

The scientific evidence does not demonstrate any direct causal link between wind turbine noise and adverse health effects according to a new report from Dr. Arlene King, Ontario's Chief Medical...

Category: Wind Noise, Health, & Safety

The Potential Health Impact of Wind Turbines

May 20, 2010,   by Chief Medical Officer of Health (CMOH) of Ontario

The review concludes that while some people living near wind turbines report symptoms such as dizziness, headaches, and sleep disturbance, the scientific evidence available to date does not...

Category: Wind Noise, Health, & Safety

Boston Museum of Science holds conference on small wind turbine project

May 19, 2010,  

Back in December I stopped by the Boston Museum of science and checked out the public display of data from their small wind turbine experiment, and I posted some of the publicly available data here...

Category: Rooftop & Urban Wind

Adeeb Saba assumes responsibility for product development at WindTamer Corporation

May 19, 2010,  

William A. Schmitz, Chief Executive Officer of WindTamer Corporation, said that, “The decision of the Board of Directors and me to no longer have Mr. Brock head the research and development of the...

Category: Windtamer

Presentation by Paul Gipe for Comité de Liaison Energie Renouvelables, Paris, May 7, 2010

May 7, 2010,   by Paul Gipe

Small Wind in North America, the Good, the Bad, the Ugly; Real Urban Wind & the Community Power Revolution

Category: News on Small Wind, Presentations by Paul Gipe

Elena Diffuser-Augmented Wind Turbine (DAWT)

May 7, 2010,   by Paul Gipe

Have Parisians Drunk the Kool-Aid?[more]

Category: Shrouded & Ducted Wind Turbines, Elena Energie

Presentation by Paul Gipe at the DERBI 2010 International Conference, Perpignan France

May 4, 2010,   by Paul Gipe

What Small Wind Needs to Make Its Mark

Category: News on Small Wind, Presentations by Paul Gipe

Windgesichter (The Face of Wind Energy) a Review by Paul Gipe

April 26, 2010,   by Paul Gipe

Windgesichter: Aufbruch der Windenergie in Deutschland (The face of wind: Dawn of wind energy in Germany) by Jan Oelker is a joy to behold. It's one of those rare cases where you can indeed tell a...[more]

Category: Reviews Coffee Table Books, Reviews of Wind Books auf Deutsch, Book Reviews of Books auf Deutsch, History of Wind Power

CanWEA Calls for Small Wind Feed-in Tariffs in Ontario

April 23, 2010,   by Paul Gipe

The Canadian Wind Energy Association (CanWEA) has called on the Ontario government to offer feed-in tariffs designed for small wind turbines.[more]

Category: Feed-in Tariffs for Small Wind

L'Energie du Vent A Review

April 22, 2010,   by Paul Gipe

L'énergie du vent : Les éoliennes au service des hommes et de leur planète Is a beautiful coffee-table book with page after page of photos sandwiched between essays on how wind turbines work and how...[more]

Category: Reviews Coffee Table Books, Reviews of Wind Books en Francais, book Reviews, Book Reviews of Books en Francais

Power From the Wind A Review by Paul Gipe

April 20, 2010,   by Paul Gipe

Subtitled "A practical guide to small-scale energy production," the book follows ground well trod before and seeks to capitalize on the odd American desire to run their kilowatt-hour meter backwards.[more]

Category: book Reviews, News on Small Wind

L'Eolien A Review

April 20, 2010,   by Paul Gipe

L'éolien au cœur de l'incontournable révolution énergétique is a serious work on wind energy for francophone readers. It is my kind of book, chocked full of drawings, charts, tables, and historical...[more]

Category: Reviews Engineering & Technical Books, Reviews of Wind Books en Francais, Book Reviews of Books en Francais

Wind Power for Dummies A Review by Paul Gipe

April 16, 2010,   by Paul Gipe

Wind Power for Dummies by Ian Woofenden is the mass-market, mainstream book on small wind turbines that the industry has long sought as a measure of respectability. [more]

Category: book Reviews, News on Small Wind

Wind Power--The Danish Way

April 16, 2010,   by Paul Gipe

Wind Power The Danish Way: From Poul la Cour to Modern Wind Turbines is a book written by a who's who of Danish wind power. It's a celebratory book and Danes have a lot to celebrate--a lot to be...[more]

Category: book Reviews, History of Wind Power

The Nature of Wind Power A Review by Paul Gipe

April 16, 2010,   by Paul Gipe

 The Nature of Wind Power is another celebratory book on Danish wind power leading up to the climate change conference in Copenhagen in 2009. The Nature of Wind Power is by a leading Danish landscape...[more]

Category: Reviews Coffee Table Books

Urban Wind Energy--A Review

April 15, 2010,   by Paul Gipe

I feared the worst when I saw the title. As an outspoken critic of so-called "Urban" wind and especially the British variety, I thought the book would be destined for the dust bin after the first...[more]

Category: Rooftop & Urban Wind, book Reviews

More thoughts on the Portland, OR, USA 12W Bldg wind turbine array

April 12, 2010,   by Kimberly King

As I am learning, most designers tend to quietly dismiss a project's failings, and don't repeat installations like this. And so, as with folks in the USA not paying attention to the results of the...

Category: Rooftop & Urban Wind

Small Wind Turbine Classification and Performance in Germany

March 30, 2010,   by Paul Gipe

The following data is summarized from a presentation by Paul Kühn, Fraunhofer-Institut für Windenergie und Energiesystemtechnik (IWES), at Husum, Germany, March 20, 2010 based on observations of...[more]

Category: News on Small Wind

Mariah: Another Performance Report on Windspire VAWT

March 30, 2010,   by Paul Gipe

The French test site, SEPEN (Site Expérimental pour le Petit Eolien de Narbonne), published a performance report 28 September 2009 on Mariah's 1.2 kW Windspire. The test site is in a windy region in...[more]

Category: Small Turbine Testing, Small Vertical Axis Wind Turbines, Mariah Windspire

Presentation by Paul Gipe on Farm Power: Renewable Tariffs for a Rural Revolution, FARE

March 26, 2010,   by Paul Gipe

Category: Florida FIT, Presentations by Paul Gipe

Oil Industry Behind Critical Wind Energy Report

March 19, 2010,   by Copenhagen Post

A controversial report critical of the wind energy industry from conservative think tank CEPOS was commissioned and paid for by an American think tank with close ties to the coal and oil industries,...

Category: Wind in Denmark

2010 Windmill-Wildflower Hike Planned for Tehachapi

March 8, 2010,   by Paul Gipe

  Sierra Club Kern-Kaweah Chapter P.O. Box 3357 Bakersfield, CA 93385 http://kernkaweah.sierraclub.org/   For more information contact: Tony Swan, 661 363 5106   25th Annual Walk May 8th,...[more]

Category: Wind Energy & the Environment

Researchers correct the false allegations on Danish wind energy

February 26, 2010,  

In a normal wind year, Danish wind turbines generate the equivalent of approx. 20 percent of the Danish electricity demand. . .

Category: Debunking Myths about Wind Energy, Wind in Denmark

Spain Renewable Energy and High Penetration

February 19, 2010,   by Paul Gipe

  On November 19 and 20th, 2009 York University sponsored a workshop on Spain's experience with feed-in tariffs and the large-scale integration of renewable energy. Hugo Lucas Porta describes...[more]

Category: Spain FIT, News on Wind Energy

Danish Wind Power Export and Cost

February 19, 2010,   by Who's Who of Danish Wind Power

by a Who's Who of Danish Windpower experts--an authoritative rebuttal to the wild claims of CEPOS, a so-called Danish think tank. . .

Category: Wind in Denmark

Presentation by Paul Gipe on Feed-in Tariff Policy for the Local Clean Power Conference

February 10, 2010,   by Paul Gipe

Category: California FIT, Presentations by Paul Gipe

Design Engineering Cleanfield Energy - McMaster's collaboration boosts wind turbine performance

February 9, 2010,  

Article claiming that McMaster improved the VAWTs performance 50% based on wind tunnel tests, according to Dr. Stephen Tullis, leader of the research project and Assistant Professor at McMaster.[more]

Category: Cleanfield

ILSR's Energy Self-Reliant States by John Farrell--a Review

February 6, 2010,   by Paul Gipe

  Energy Self-Reliant States: Second and Expanded Edition by John Farrell and David Morris came out in October, 2009 and it packs a punch. I chewed on it a little at the time but wanted to delve...[more]

Category: USA FIT, book Reviews

Sierra Club Kansas Chapter Position on Wind Energy

February 1, 2010,   by J. Scott Smith

Category: Wind Energy & the Environment

Finally--AWEA Establishes Small Wind Turbine Performance and Safety Standard

January 31, 2010,   by Paul Gipe

Finally, after decades of effort, the American Wind Energy Association has established performance and safety standards for small wind turbines.[more]

Category: Small Turbine Testing

Mariah In the Running for Worst Small Turbine Install

January 31, 2010,   by Paul Gipe

You have to give them credit, small turbine manufacturers are a competitive lot, especially small VAWT suppliers. They are tripping over themselves to see who can win the award for worst turbine...[more]

Category: Worst Turbine Install in History, Small Vertical Axis Wind Turbines, Mariah Windspire

Presentation by Paul Gipe on Globalizing Successful RE Policy for VerdeXchange

January 24, 2010,   by Paul Gipe

Category: California FIT, Presentations by Paul Gipe

Presentation by Paul Gipe on Accelerating Deployment of RE for VerdeXchange

January 24, 2010,   by Paul Gipe

Category: California FIT, Presentations by Paul Gipe

Presentation by Paul Gipe on Feed-in Tariffs for Verdexchange, Los Angeles

January 23, 2010,   by Paul Gipe

Category: California FIT, Presentations by Paul Gipe

Worst Turbine Install in History?

December 27, 2009,   by Paul Gipe

Mike Nelson call this the worst turbine install in history. It certainly ranks right up there with some recent installations by Mariah, a Vertical-Axis Wind Turbine manufacturer.[more]

Category: Worst Turbine Install in History, Small Vertical Axis Wind Turbines, Mariah Windspire

Portuguese Wind Reaches Record 71 Percent

December 11, 2009,  

Portugal's national grid operator, REN, announced at a workshop in late November that wind generation delivered 71% of the nation's electricity on November 15, 2009. REN estimates that wind will...[more]

Category: News on Wind Energy, Wind Statistics

Small Wind Turbines Monitored at Wulf Test Field

December 6, 2009,   by Paul Gipe

Below is a tabular list of the micro and mini wind turbines tested at the Wulf Test Field and the type of tests performed. [more]

Category: Wulf Small Wind Turbine Test Field Results

Wulf Test Field Equipment Description

December 6, 2009,   by Paul Gipe

During the winter of 1998 through the spring of 1999, I installed equipment to measure the power curve of first mini and then eventually micro wind turbines. The description of this effort and the...[more]

Category: Wulf Small Wind Turbine Test Field Results

Windtamer Hype Needs Trimmed: Betz Beaten Yet Again Raises Questions

December 6, 2009,   by Paul Gipe

Poor Albert Betz, the German physicist must be turning over in his grave. He's been beaten yet again.[more]

Category: Shrouded & Ducted Wind Turbines, Windtamer

The Impact of Wind Power Projects on Residential Property Values in the United States

December 1, 2009,   by Lawrence Berkeley National Laboratory

Specifically, neither the view of the wind facilities nor the distance of the home to those facilities is found to have any consistent, measurable, and statistically significant effect on home sales...

Category: Debunking Myths about Wind Energy, Wind Noise, Health, & Safety

LBNL: The Impact of Wind Power Projects on Residential Property Values in the United States: A Multi-Site Hedonic Analysis

December 1, 2009,   by Ben Hoen, Ryan Wiser, Peter Cappers, Mark Thayer, and Gautam Sethi

The present research collected data on almost 7,500 sales of singlefamily homes situated within 10 miles of 24 existing wind facilities in nine different U.S. states. . . Specifically, neither the...

Category: Debunking Myths about Wind Energy

Why I Have Chosen Not to Be on the Small Wind Certification Council

November 23, 2009,   by Paul Gipe

I appreciate the vote of confidence in the Small Wind Certification Council's board of directors in appointing me to the Council. It is an honor to be nominated to be part of the commercialization of...[more]

Category: Small Turbine Testing

Wind Power [Grid Integration] Myths Debunked by IEEE Power & Energy Magazine

November 10, 2009,   by Michael Milligan, Kevin Porter, Edgar DeMeo, Paul Denholm, Hannele Holttinen, Br

Several misunderstandings and myths have arisen due to the characteristics of wind generation, particularly because wind-energy generation only occurs when the wind is blowing. . .

Category: Grid Integration

Feed-in Tariffs for Small Wind Turbines Becoming a Reality

November 5, 2009,   by Paul Gipe

Presentation by Paul Gipe for ASES Solar 2009

Category: Feed-in Tariffs for Small Wind, Presentations by Paul Gipe

Photos of Small Wind Turbines Tested at Wulf Field

November 3, 2009,   by Paul Gipe

     [more]

Category: Wulf Small Wind Turbine Test Field Results, News on Small Wind

Advanced Renewable Tariffs for Small Wind Turbines

November 1, 2009,  

Presentation by Paul Gipe for CanWEA 2009 Conference, Toronto, Ontario. Includes a summary of feed-in tariffs for small wind turbines worldwide and a review of small wind program performance in the...

Category: Feed-in Tariffs for Small Wind, Presentations by Paul Gipe

Selsam Super Twin Removal

October 31, 2009,   by Paul Gipe

The turbine had failed sometime in the spring of 2009. We were living in Canada for most of the spring and early summer. When we returned it was the fire season and we didn't drive onto the site...[more]

Category: Wulf Small Wind Turbine Test Field Results

Wind Turbines at the Boston Museum of Science: Production Data

October 29, 2009,  

First, here’s a view of the installation from the north bank of the Charles river,

Category: Rooftop & Urban Wind

Presentation by Paul Gipe at the Washington Solar Summit

October 23, 2009,   by Paul Gipe

Category: Washington State FIT , Presentations by Paul Gipe

Presentation by Paul Gipe at UCLA Greening North America

October 22, 2009,   by Paul Gipe

Category: California FIT, Presentations by Paul Gipe

Ontario Chief Medical Officer of Health on Wind Turbines

October 21, 2009,   by Dr. Arlene King

The review concluded that there is no evidence of noise-induced health effects at levels emitted by wind turbines . . .

Category: Wind Noise, Health, & Safety

Danish Renewable Energy Policy A Review

October 20, 2009,   by Preben Maegaard

Danish Renewable Energy Policy by Preben Maegaard recounts the historic development of Danish policy from the perspective of one its participants. Maegaard, director of the Nordic Folkecenter for...[more]

Category: Wind in Denmark, book Reviews

Quick Grab a Stake--Mag-Wind Rises from the Grave

October 20, 2009,   by Paul Gipe

Mag-Wind is back. Grab your children. Bar the door. The dead walk. . . Worse Ed Begley and Jay Leno, those omnipresent endorsers of all things "green", have leapt to the aid of the undead. Their...[more]

Category: Small Vertical Axis Wind Turbines, Inventions & Questionable Wind Turbines, Rooftop & Urban Wind, Mag-Wind

Earthtronic's Honeywell Windtronics WT 6500--A Review

October 16, 2009,   by Paul Gipe

I've reviewed the series of preproduction wind turbine designs from Earthtronics twice before. See below.[more]

Category: Small Turbine Product Reviews, Windtronics

Gipe Receives Canadian Wind Award for Feed-in Tariff Campaign

October 12, 2009,   by Paul Gipe

Long-time renewable energy advocate Paul Gipe was selected by the Canadian Wind Energy Association for its Individual Leadership Award at its 2009 conference in Toronto September 22. The Canadian...[more]

Category: News on Wind Energy, News on Feed in Tariffs, News on Large Wind

Ducted or Augmented Turbines--Enflo

October 12, 2009,   by Paul Gipe

Ducted or shrouded wind turbines have been invented and reinvented throughout the 20th century.[more]

Category: Shrouded & Ducted Wind Turbines

Coal Plants Closing, People Owning Their Own Power, Feed-in Tariffs and More

October 5, 2009,  

A podcast interview with Paul Gipe, author of Wind Energy Basics

Category: News on Small Wind

About Wind Energy - The Facts

October 1, 2009,   by European Wind Energy Association

Contains a very good summary of wind penetration in Europe.

Category: Debunking Myths about Wind Energy

Presentation by Paul Gipe at the Conference on Clean Tech at Southwestern Law School

September 18, 2009,   by Paul Gipe

Category: California FIT, Presentations by Paul Gipe

The Danish Wind Experience: Truth and Fiction

September 15, 2009,   by Samir Succar

Rebuttal of the Centre for Policy Studies' (CEPOS) so-called report on wind energy in Denmark.

Category: Wind in Denmark

Coal Plants Closing, People Owning Their Own Power, Feed-in Tariffs and More

September 13, 2009,   by Paul Gipe

A podcast interview with Paul Gipe

Category: News on Wind Energy, News on Feed in Tariffs, News on Wind Coop

Avian mortality from wind power, fossil-fuel, and nuclear electricity by Benjamin K. Sovacool

September 13, 2009,   by Benjamin Sovacool

This article explores the threats that wind farms pose to birds and bats before briefly surveying the recent literature on avian mortality and summarizing some of the problems with it. . .

Category: News on Large Wind, News on Wind Energy, Wind Energy & the Environment

Britain's Energy Savings Trust Finds Small Wind Turbines Perform Poorly in Tests

September 9, 2009,   by Paul Gipe

Confirms That Rooftop Mounting Doesn't Deliver[more]

Category: Rooftop & Urban Wind

Wind powered factories: history (and future) of industrial windmills

August 10, 2009,   by Kris De Decker

One of the most spectacular developments of industrial wind power technology occurred in the Zaan district, a region situated just above Amsterdam in the Netherlands. . . From 1600 to 1750, when the...

Category: History of Wind Power

WWEA's Wind Energy International 2009/2010-A Review

August 7, 2009,   by Paul Gipe

This is a book that was done right. It was written by the right people for the right reasons and printed on quality paper in full color.[more]

Category: book Reviews

WWEA's Wind Energy International 2009/2010-A Review

August 7, 2009,   by Paul Gipe

The World Wind Energy Association's "Wind Energy International 2009/2010" landed on my desk with a reassuring thump. I picked it up simply to move it somewhere else until I could get time to thumb...[more]

Category: book Reviews

Press Release: Cleanfield Energy Receives UL Certification for Its 3.5 kW Vertical Axis Wind Turbine

August 7, 2009,  

Press release using a common ploy to confuse amateurs by announcing UL certification. UL only certifies electrical performance not whether the wind turbine will work as a wind turbine or work well at...[more]

Category: Cleanfield

Attack on industrial wind puffed with false peer review claims

August 4, 2009,   by Gar Lipow

Shame on Pierpont for using such deceit to prop up her case. Shame on the Independent for not even bothering to read the Pierpont website carefully enough to detect this poorly concealed...

Category: Wind Noise, Health, & Safety

Are wind farms a health risk?

August 3, 2009,   by National Health Services

This study provides no conclusive evidence that wind turbines have an effect on health or are causing the set of symptoms described here as "wind turbine syndrome". The study design was weak, the...

Category: Wind Noise, Health, & Safety

A Review of Large-scale Wind Integration in the United States by Ryan Wiser, LBNL

July 22, 2009,   by Ryan Wiser, LBL

Category: Grid Integration

Fantasy Wind Turbines or If It's Too Good To Be True . . .

July 20, 2009,   by Paul Gipe

Scams, Frauds, & Flakes--Tell-Tale Signs[more]

Category: News on Small Wind, Inventions & Questionable Wind Turbines, Shrouded & Ducted Wind Turbines, Vortec, Sheerwind-Invelox, FloDesign-Ogin, Elena Energie, Windtamer VortecFloDesign-Ogin

"Reliable" Nuclear Unreliable Afterall Even in France

July 19, 2009,   by Paul Gipe

  Anti-wind activists often claim that nuclear is more reliable than wind energy and, therefore, we should just use nuclear and forget wind energy, solar energy, and renewables in...[more]

Category: Debunking Myths about Wind Energy, Nuclear Power

Warwick [Small] Wind Trials

July 17, 2009,  

Performance monitoring of rooftop wind turbines in Great Britain

Category: Small Turbine Testing

Warwick Wind Trials Gives Failing Grade to Rooftop Wind

July 17, 2009,   by Paul Gipe

If further proof is needed that mounting wind turbines on rooftops is a bad idea, the final report on the Warwick Wind Trials is it.[more]

Category: Rooftop & Urban Wind

Why so much noise about wind?

July 13, 2009,   by John Howard

The time for that choice is now. Do we allow our health to suffer by continuing to rely on coal? Do we gamble on nuclear? Or do we choose a less harmful path toward renewable energy? How do we...

Category: Wind Noise, Health, & Safety

Review of Earth4Energy

July 7, 2009,   by Dan Fink

To avoid a deal "that's too good to be true".

Category: Small Turbine Product Reviews

Pennsylvania Adopt An Anemometer Program 1980

July 4, 2009,   by Paul Gipe

  The document below is a scanned copy of Adopt an Anemometer: A Unique Anemometer Loan Program created circa 1980 by the Center for Alternative Resources for the US Department of Energy. The...[more]

Category: News on Small Wind, News on Wind Energy

Wind Project Performance Data

July 3, 2009,   by Paul Gipe

This is a quick survey of some of the sources for wind turbine performance statistics, that is, how many turbines, how many MW, and how much electricity they produce. There are no doubt more...[more]

Category: Wind Statistics

Muncie VAWT--An Expensive Demonstration

June 22, 2009,   by Paul Gipe

The Muncie (Indiana) Star recently reported that the Delaware County Redevelopment Commission awarded almost $1 million to a relatively little known German company.[more]

Category: Small Vertical Axis Wind Turbines

Wind turbines at Boston's Museum of Science

June 12, 2009,   by Ben Polito

It was interesting to compare the behavior of the various turbines.

Category: Rooftop & Urban Wind

New US Rooftop Wind Turbine Lab

June 1, 2009,  

The Boston, Massachusetts, Museum of Science, is installing a rooftop Wind Turbine Lab in the summer of 2009.

Category: Rooftop & Urban Wind

Calculated Yield of Small Wind Turbines at Zeeland Test Site

May 26, 2009,   by Paul Gipe

Data on actual measured performance of small wind turbines at the Test Field for Small Wind Turbines in Zeeland, the Netherlands. The site has a very low average wind speed of only 3.8 m/s during the...[more]

Category: Small Turbine Testing

The fierce urgency of now by Bill McKibben

May 25, 2009,   by Bill McKibben

Yes, windmills and dams deface the landscape but the climate crisis demands immediate action. . .

Category: Debunking Myths about Wind Energy, Wind Energy & the Environment

Energy Ball--A Review

May 23, 2009,   by Paul Gipe

I've been putting off writing anything about the "Energy Ball" simply because there are too many of these "inventions" for one person to track, analyze, and report on. Like many of these...[more]

Category: Inventions & Questionable Wind Turbines, Small Turbine Product Reviews

Earthtronics (Honeywell Windtronics) WT 6000

May 22, 2009,   by Paul Gipe

Conclusion? Again, it's unlikely that this wind turbine will produce the reported generation anywhere in Michigan by a large margin.[more]

Category: Windtronics

Tyler Hamilton: For and against wind power

May 12, 2009,   by Tyler Hamilton

So, which concerns are real and which aren't? Let's investigate whether utility-scale wind energy is as green and economical as the industry and politicians paint it. . .

Category: Wind Noise, Health, & Safety

Tyler Hamilton: Noise protesters howling about windfarms

May 11, 2009,   by Tyler Hamilton

The known and well-documented health effects from coal use and the threat that climate change poses to humans and other species must be weighed against the unproven links between wind turbines and...

Category: Wind Noise, Health, & Safety

Commentary on the Skystream 3.7

May 9, 2009,   by Paul Gipe

The Skystream uses a 3.72-meter diameter, three-blade, downwind rotor. Southwest Windpower claims that this rotor will deliver 1.8 kW at its rated speed of 9 m/s and generate 4,800 kWh per year at an...[more]

Category: Small Turbine Product Reviews

Skystream Field Observations

May 7, 2009,   by Paul Gipe

Twice now on our way to Pearson International Airport in Toronto we've passed two Skystreams in operation at a shopping center. They've both been operating both times. That's plus, we need a lot more...[more]

Category: Small Turbine Product Reviews

The cost of wind, the price of wind, the value of wind

May 4, 2009,   by Jérôme Guillet

An excellent primer on why wind energy (and solar PV) needs feed-in tariffs. . .

Category: Feed-in Tariffs: The Economic Case, News on Large Wind

The cost of wind, the price of wind, the value of wind

May 4, 2009,   by Jérôme Guillet

An excellent primer on the value and integration of wind into utility systems.

Category: Grid Integration

Small-scale wind turbines in cities and suburbs

May 2, 2009,  

Presentation at the CanWEA conference i 2007 by S. Tullis at McMaster University.[more]

Category: Cleanfield, Rooftop & Urban Wind

The Folly of Building-Integrated Wind by Alex Wilson, BuildingGreen.com

April 29, 2009,   by Alex Wilson

A thorough analysis of the concept by an experienced renewable energy journalist.

Category: Rooftop & Urban Wind

Michigan Live: Michigan-made windspires designed for homeowners

April 24, 2009,  

The Michigan Economic Development Corporation supported the project with a $400,000 grant.

Category: Mariah Windspire

Anti-wind now not just for NIMBY’s

April 22, 2009,   by Charles Komanoff

Opposition to wind power used to be the province of NIMBY’s who quailed at the supposed intrusion into their viewsheds and soundsheds. No more. Wind power is big — its share of U.S. electricity...

Category: Debunking Myths about Wind Energy

More on "renewable" energy

April 22, 2009,   by Craig Morris

Another insightful analysis by Craig Morris of the American Spectator's "critique" of renewable energy . . .

Category: Debunking Myths about Wind Energy

Wind Power’s Displacement of Fossil Fuels by Charles Komanoff

April 21, 2009,   by Charles Komanoff

[W]hen wind turbines are operated as parts of an interconnected grid for which the dominant share of energy is provided by generators burning fossil fuels (coal, oil, natural gas), wind power...

Category: Debunking Myths about Wind Energy, Grid Integration, Fossil Fuels

'Annoyance' factor exists

April 16, 2009,   by Peter Epp

Dr. David Colby doesn't doubt that some people are bothered by the noise generated by a wind turbine, but the acting medical officer of health for Chatham-Kent says there's no direct link between...

Category: Wind Noise, Health, & Safety, Debunking Myths about Wind Energy

Presentation by Paul Gipe on Community Renewables in Barcelona

April 16, 2009,   by Paul Gipe

Category: Presentations by Paul Gipe

Good Wind in Denmark: Rebuttal to Wild Claims That Denmark Has Abandoned Wind Energy

April 13, 2009,   by Paul Gipe

The Danes have an expression, as do most European cultures, to wish one good fortune on parting. The expression comes from the days of sail: God Vind or Good Wind! The wind is good in Denmark, and...[more]

Category: Wind in Denmark

Small Wind Turbine Testing Results from the National Renewable Energy Lab

April 9, 2009,   by NREL

Gaia-Wind II kW--Power curve and annual energy output

Category: Small Turbine Testing

An Attack of the Bellamoids

March 31, 2009,   by George Monbiot

James Lovelock says the government’s enthusiasm for wind farms approaches fascism.--By George Monbiot in the Guardian . . .

Category: Debunking Myths about Wind Energy

More on the Merit Order Effect by Jérôme Guillet

March 31, 2009,   by Jérôme Guillet

In summary, wind power prices are comparable to those of fossil fuel ppower plants, but (i) that price is guaranteed not to change over the next 20 years, (ii) when wind is blowing, it brings down...

Category: Grid Integration

Letter from Las Vegas about Mars

March 30, 2009,   by Craig Morris

On Noise from Wind Turbines and Wild Claims

Category: Debunking Myths about Wind Energy, Wind Noise, Health, & Safety

Warming Up Wind Chill: Taking on the Fallacious “Report” by the Centre for Policy Studies

March 14, 2009,   by Paul Gipe

Category: Debunking Myths about Wind Energy

Product Brochure for Cleanfield 3.5 kW VAWT

March 12, 2009,  

Product brochure by a British company for Cleanfield's 3.5 kW VAWT shown on an unusual monopole tower. To my knowledge the Cleanfield turbine was never certified under the British FIT program. This...[more]

Category: Cleanfield

Youtube Videos of Cleanfield Energy VAWT

February 25, 2009,  

Two videos of Cleanfield VAWTs spinning. The first shows two of its small VAWT on the roof of a what looks like a school in Ontario, Canada. The second shows a group of five turbines at an airport in...[more]

Category: Cleanfield

Wind Power (2004) Corrections & Updates

January 22, 2009,   by Paul Gipe

Wind Power: Renewable Energy for Home, Farm, & Business (2004) Corrections   If you find further errors or want to suggest changes or corrections, post a message to Paul Gipe. Your help is...[more]

Category: Books-Wind Power

Praise for Wind Power (2004)

January 21, 2009,  

Praise for Wind Power: Renewable Energy for Home, Farm, & Business (2004) by Paul Gipe Advance Praise "If you only buy one book on wind energy, make it this one. . . Paul Gipe has made a great...[more]

Category: Books-Wind Power

Wind Turbine Land Leases, Landowner Guides, Wind Energy Royalties

January 20, 2009,   by Paul Gipe

There are a several sources of information for landowners on the typical terms and conditions for leasing land for wind energy development. The newest is by the Ontario Sustainable Energy Association...[more]

Category: News on Large Wind, Landowner Easements & Royalty Payments

Selected Wind Turbine Yields (Performance)

January 20, 2009,   by Paul Gipe

[more]

Category: Wind Statistics

NREL Mariah Power's Windspire Wind Turbine Testing and Results

January 14, 2009,  

The Windspire is a 1.2-kilowatt (kW) vertical-axis small wind turbine. The turbine tower is 9.1 meters tall, and its rotor area is 1.2 by 6.1 meters. The turbine has a permanent-magnet generator with...

Category: Small Turbine Testing, Small Vertical Axis Wind Turbines, Mariah Windspire

Guardian: Many home turbines fall short of claims, warns study

January 13, 2009,   by Juliette Jowit

Juliette Jowit The Guardian, Tuesday 13 January 2009 Home wind turbines are generating a fraction of the energy promised by manufacturers, and in some cases use more electricity than they make, a...[more]

Category: News on Small Wind

Some economic aspects of feed-in tariffs and green certificate schemes

January 9, 2009,   by Arne Kildegaard

Arne Kildegaard on the Merit Order Effect

Category: Grid Integration

Presentation by Paul Gipe on Advanced Renewable Tariffs, Northfield, Minnesota

January 9, 2009,   by Paul Gipe

Category: Minnesota FIT , Presentations by Paul Gipe

Wind Energy Basics Revised: A Guide to Home- and Community-scale Wind Energy Systems

January 4, 2009,  

As the title suggests, this version of Chelsea Green's original 1999 version expands the scope to include commercial-scale wind turbines used in distributed applications. As such, this book includes...[more]

Category: Books Wind Basics, Books by Paul Gipe

How Not to Site Vertical Axis Wind Turbines (Mariah Windspire) #1

January 4, 2009,   by Paul Gipe

Stewart Russell captured these photos of a Mariah Windspire installed at the College School in St. Louis. Stewart is an experienced wind hand and noted that the Windspire, which is an unguyed,...[more]

Category: Small Vertical Axis Wind Turbines, Worst Turbine Install in History, Mariah Windspire

IEA 2009 Small Wind Report

January 1, 2009,  

Stats on worldwide development of small wind turbines

Category: News on Small Wind

Renewable Devices Swift Mk II AEO

December 30, 2008,   by Paul Gipe

Britain's Renewable Devices introduced its "Swift" micro turbine several years ago to criticism that its estimates of annual production were inflated. See Roof Top Over the Top in Britain. Since then...[more]

Category: Small Turbine Product Reviews, News on Small Wind, Windtronics, Renewable Devices Swift

Windtronics 760 Estimated Generation

December 30, 2008,   by Paul Gipe

It's unlikely that this wind turbine will produce the reported generation anywhere in Michigan.[more]

Category: Windtronics

Presentation by Paul Gipe for the Michigan Public Service Commission on Advanced Renewable Tariffs-- New Policy Option for North America

December 18, 2008,   by Paul Gipe

Grand Rapids, Michigan

Category: Presentations by Paul Gipe

Presentation to the National Conference of Environmental Legislators

December 12, 2008,   by Paul Gipe

Category: Presentations by Paul Gipe

Wind Power in Context an Energy Watch Report

December 1, 2008,   by Dr. Rudolf Rechsteiner

Category: News on Wind Energy

Towards High Penetration Rates of Renewable Electricity: Solutions, Results of Experience

November 20, 2008,   by Bernard Chabot

Presentation on Integrating Renewable Electricity into the Grid by a French authority on renewable energy. Chabot's conclusion: Think Big! We already have the technology we need to go to 100% RE.

Category: Grid Integration

Tower Work and Do-it-Yourselfers

November 19, 2008,   by Paul Gipe

Any wind turbine and tower that cannot be safely lowered to the ground for servicing should have a fall arresting system for ascending, descending, and working atop the tower, a sturdy work platform,...[more]

Category: Accidents & Safety

Lessons from the Death of Terry Mehrkam

November 19, 2008,   by Paul Go[e

I knew Terry Mehrkam. I wrote about him. I also wrote his obituary. I hope I never have to write another obituary about someone working on a wind turbine.[more]

Category: Accidents & Safety

New Federal Subsidies Distort the US Small Wind Market

November 14, 2008,   by Paul Gipe

Or How to Increase the Power of the Skystream 3.7 with the Stroke of a Pen[more]

Category: Small Turbine Product Reviews, Feed-in Tariffs for Small Wind

French Wind Growth Continuing

October 30, 2008,   by Paul Gipe

October 30, 2008 Despite rumors to the contrary in the Anglophone world, French wind energy development is continuing. In fact growth is accelerating according to data published by France Énergie...[more]

Category: Debunking Myths about Wind Energy, News on Wind Energy

French Wind Growth Continuing

October 30, 2008,   by Paul Gipe

Despite rumors to the contrary in the Anglophone world, French wind energy development is continuing. In fact growth is accelerating according to data published by France Énergie Éolienne, the French...[more]

Category: Wind Statistics

Press Release: Cleanfield Energy Announces Hiring of Wind Energy Specialist

October 24, 2008,  

Press release touting the hiring of an engineer from McMaster University in Hamilton, Ontario as a specialist in wind energy in urban areas.[more]

Category: Cleanfield

Small Wind Turbine Feed-in Tariff Calculations

October 15, 2008,   by Paul Gipe

The following tables are provided as a public service. Feedback is welcome. [more]

Category: Feed-in Tariffs for Small Wind

Homebrew Wind Power--A Review

October 2, 2008,   by Paul Gipe

Finally, a detailed-some would argue exhaustive-treatment of how to build your own backyard wind turbine. The authors, do-it-yourselfers who actually know what they're doing, are the powers behind...[more]

Category: book Reviews, News on Small Wind

Presentation by Paul Gipe to DePaux University on Advanced Renewable Tariffs: New Policy Option for North America

September 30, 2008,   by Paul Gipe

Category: Presentations by Paul Gipe

Aerovironment's AVX 1000 Rooftop Turbines at Logan Airport

September 26, 2008,   by Paul Gipe

AeroVironment has installed 20 units of its AVX 1000 rooftop turbines on a building at Boston's Logan International Airport. The 20 kW installation, part of what AeroViron[ment calls its...[more]

Category: Rooftop & Urban Wind, Small Turbine Product Reviews, LEED LEED

How Not to Site Vertical Axis Wind Turbines (Mariah Windspire) #2

September 26, 2008,   by Paul Gipe

This is a classic example of how not to install wind turbines to best advantage. The best that can be said about this installation is that at least they were not mounted on top of the building.[more]

Category: Worst Turbine Install in History, Small Vertical Axis Wind Turbines, Mariah Windspire, LEED LEED

A Challenge Worthy of Great Nations: Moving from a Nation of Consumers to a Nation of Producers

September 23, 2008,   by Paul Gipe

(ASPO US Sacramento)

Category: News on Wind Energy, News on Feed in Tariffs

Presentation by Paul Gipe to the Michagan State Assembly Commerce Committee on Advanced Renewable Tariffs New--Policy Option for Michigan

September 16, 2008,   by Paul Gipe

Lansing, Michigan

Category: Presentations by Paul Gipe

Presentation by Paul Gipe for ASES Solar 2008 on Advanced Renewable Tariffs: New Policy Option for North America

August 8, 2008,   by Paul Gipe

Category: USA FIT, Presentations by Paul Gipe

Small-scale wind energy Technical Report by Britain's Carbon Trust

August 1, 2008,  

Category: Rooftop & Urban Wind

Gore sets goal of 100% carbon-free electricity by 2020: Can Wind Meet It?

July 17, 2008,   by Jérôme Guillet

I thought I'd comment on the technical feasibility of the plan, and the underlying economics of such an endeavour. . .

Category: News on Large Wind

Gipe Receives 2008 World Wind Energy Award

July 10, 2008,   by Paul Gipe

The World Wind Energy Association presented its 2008 World Wind Energy Award to Paul Gipe at its 7th annual conference. The trade association also elected Gipe to its board of directors. Gipe shared...[more]

Category: News on Wind Energy, News on Feed in Tariffs

Massachusetts Small Wind Report

July 1, 2008,   by Paul Gipe

Consultants to the Massachusetts Technology Collaborative have issued a damning report on the performance of small wind turbines installed under the MTC's subsidy program.[more]

Category: Small Turbine Testing

Presentation by Paul Gipe A Challenge Worthy of North America

June 24, 2008,   by Paul Gipe

WWEA Conference, opening plenary session, Kingston, Ontario

Category: USA FIT, Presentations by Paul Gipe

Wind 101 Half Day 1 Overview

June 16, 2008,   by Paul Gipe

Category: Presentations by Paul Gipe

Wind 101 Half Day 2 Applications

June 16, 2008,   by Paul Gipe

Category: Presentations by Paul Gipe

Wind 101 Half Day 3 Small Wind

June 16, 2008,   by Paul Gipe

Category: Presentations by Paul Gipe

Wind 101 Half Day 4 Community & Urban Wind

June 16, 2008,   by Paul Gipe

Category: Presentations by Paul Gipe

Wind 101 Half Day 5 Fundamentals

June 16, 2008,   by Paul Gipe

Category: Presentations by Paul Gipe

Wind 101 Half Day 6 Technology 01

June 16, 2008,   by Paul Gipe

Category: Presentations by Paul Gipe

Wind 101 Half Day 7 Technology 02

June 16, 2008,   by Paul Gipe

Category: Presentations by Paul Gipe

Wind 101 Half Day 8 Environment

June 16, 2008,   by Paul Gipe

Category: Presentations by Paul Gipe

Wind 101 Half Day 9 Compatible

June 16, 2008,   by Paul Gipe

Category: Presentations by Paul Gipe

Wind 101 Half Day x Installation

June 16, 2008,   by Paul Gipe

Category: Presentations by Paul Gipe

Advanced Renewable Tariffs for Small Wind Turbines

June 6, 2008,   by Paul Gipe

Presentation by Paul Gipe for the Interstate Renewable Energy Council, June 2008

Category: Feed-in Tariffs for Small Wind, Presentations by Paul Gipe

The Health Impact of Wind Turbines: A Review of the Current White, Grey, and Published Literature by Chatham-Kent Public Health Unit (Ontario, Canada)

June 1, 2008,   by Chatham-Kent Public Health Unit (Ontario, Canada)

opposition to wind farms on the basis of potential adverse health consequences is not justified by the evidence. . .

Category: Wind Noise, Health, & Safety

Wind 101-1 Overview

April 12, 2008,   by Paul Gipe

Category: Presentations by Paul Gipe

Wind 101-2 Applications

April 12, 2008,   by Paul Gipe

Category: Presentations by Paul Gipe

Wind 101-3 Small Wind

April 12, 2008,   by Paul Gipe

Category: Presentations by Paul Gipe

Wind 101-4 Community & Urban Wind

April 12, 2008,   by Paul Gipe

Category: Presentations by Paul Gipe

Wind 101-5 Fundamentals

April 12, 2008,   by Paul Gipe

Category: Presentations by Paul Gipe

Wind 101-6 Technology 01

April 12, 2008,   by Paul Gipe

Category: Presentations by Paul Gipe

Wind 101-7 Technology 02

April 12, 2008,   by Paul Gipe

Category: Presentations by Paul Gipe

Wind 101-8 Environment

April 12, 2008,   by Paul Gipe

Category: Presentations by Paul Gipe

Wind 101-9 Compatible

April 12, 2008,   by Paul Gipe

Category: Presentations by Paul Gipe

Wind 101-x Installation

April 12, 2008,   by Paul Gipe

Category: Presentations by Paul Gipe

Lettre pour les aveugles à l'usage de ceux qui voient ou l’énergie éolienne expliquée à Monsieur Nicolas Sarkozy

April 11, 2008,   by Planète éolienne, fédération des énergies du vent

Category: News on Wind Energy, Dispelling Myths en Francais

An Open Letter to Inventors by Mick Sagrillo

April 9, 2008,   by Mick Sagrillo

Specifically to inventors of vertical axis wind turbines and rooftop wind 'technology breakthroughs'

Category: Inventions & Questionable Wind Turbines

Opposition to Windpower Pollutes Climate Policy

March 31, 2008,   by Michael Vickerman

Category: Wind Energy & the Environment

Small Wind Turbines and Birds

March 18, 2008,   by Paul Gipe

Despite the problem among the thousands of medium-size turbines in the Altamont Pass, there's little data on the impact from single medium-size turbines, small clusters of machines, or small wind...[more]

Category: News on Small Wind

Why wind needs feed-in tariffs (and why it is not the enemy of nuclear)

March 4, 2008,   by Jérôme Guillet

Category: News on Wind Energy, Nuclear Power

Small Turbine VAWTs and Rotor Loading

February 25, 2008,   by Paul Gipe

February 25, 2008 Below is summary of principle characteristics of mini- and household-size Vertical Axis Wind Turbines on the international market. It is not intended to include every VAWT marketed...[more]

Category: News on Small Wind

Building Integrated Wind

February 25, 2008,   by Paul Gipe

Related to the interest in rooftop mounting of small wind turbines is that of integrating wind turbines into the building structure itself.[more]

Category: Rooftop & Urban Wind

Small Turbine VAWTs and Rotor Loading

February 25, 2008,   by Paul Gipe

Below is summary of principle characteristics of mini- and household-size Vertical Axis Wind Turbines on the international market. It is not intended to include every VAWT marketed worldwide.[more]

Category: Small Vertical Axis Wind Turbines

Small-scale Vertical Axis Wind Turbines: Wind tunnel testing results

February 22, 2008,  

Cleanfield’s first prototype small-scale Vertical Axis Wind Turbine (VAWT) has been tested in the wind tunnel at National Resources Canada’s laboratory in Ottawa.[more]

Category: Cleanfield

Tests on Small Wind Turbines at Applachian State University

January 17, 2008,   by Paul Gipe

Applachian State University has tested a number of wind turbines at its Beech Mountain Small Wind Research and Demonstration Facility. ASU has published reports on both performance and noise. It is...[more]

Category: Small Turbine Testing

One Million Megawatts of Wind Capacity for the USA: A Target Worthy of a Great Nation

January 10, 2008,   by Paul Gipe

Portion of a presentation made January 10, 2008 to Al Gore's Solutions Summit To significantly address the United State's contribution to climate change and to prepare for the diminishing supply of...[more]

Category: News on Large Wind, News on Wind Energy, Electric Vehicles

Presentation by Paul Gipe made to Al Gore's Solutions Summit in New York City

January 10, 2008,   by Paul Gipe

Category: Presentations by Paul Gipe

Whisper H40 ASU Power Curve

January 1, 2008,  

Tests on the Whisper H40 at Applachian State University's Beech Mountain Small Wind Research and Demonstration Facility by Brent Summerville confirm earlier power curve tests on the H40 at the Wulf...[more]

Category: Small Turbine Testing

Air X ASU Power Curve

January 1, 2008,  

Tests on the Air X at Applachian State University's Beech Mountain Small Wind Research and Demonstration Facility by Brent Summerville differ inexplicably with power curve tests on the Air X at the...[more]

Category: Small Turbine Testing

WWF and Greenpeace: Yes2Wind

January 1, 2008,   by WWF and Greenpeace

How to say yes to wind energy. . .

Category: Debunking Myths about Wind Energy, Wind Statistics

Windy Myths

January 1, 2008,   by Canadian Wind Energy Association

Debunked by the Canadian Wind Energy Association

Category: Debunking Myths about Wind Energy

Eolien: rumeurs et réalités

January 1, 2008,   by Service Public de Wallonie

Portail de l'énergie en Région wallonne

Category: Dispelling Myths en Francais, Debunking Myths about Wind Energy

Beating Swords into Wind Turbines–or Solar Panels if You Like

December 29, 2007,   by Paul Gipe

1% to 38% of supply[more]

Category: News on Wind Energy, News on Community Power

Early Field Tests on Air Breeze BR0001068

December 27, 2007,   by Paul Gipe

We installed an Air Breeze at the request of Southwest Windpower in mid December. The turbine was provided by SWP at no charge. We are testing the turbine pro bono.[more]

Category: Wulf Small Wind Turbine Test Field Results

Grid Integration of Wind Energy

December 20, 2007,   by Paul Gipe

Grid integration of renewable energy, especially wind energy, is a controversial topic-and has been for nearly three decades. Frankly, I think the subject has been beaten to death and for my part the...[more]

Category: Grid Integration

Urban Wind Field Trials in Great Britain

December 17, 2007,   by Paul Gipe

The following documents were made available to the public in Great Britain. They refer to the field trials of several dozen micro and mini wind turbines installed on buildings in urban and rural...[more]

Category: Rooftop & Urban Wind

Air X ABeta004 Wulf Test Field Final Report

December 15, 2007,   by Paul Gipe

The Air X s/n ABeta004 was installed for noise testing in December 2003. It ran unattended until the fall of 2007 when it failed.[more]

Category: Wulf Small Wind Turbine Test Field Results

Wind Turbines for use in Cities and Suburbs: Basic Wind Physics

December 7, 2007,   by Stephen Tullis

Presentation by Stephen Tullis, McMaster University.[more]

Category: Cleanfield, Rooftop & Urban Wind

Small-scale wind turbines in cities and suburbs: Current practice

December 7, 2007,   by Stephen Tullis

In this presentation, Stephen Tullis of McMaster University calls attempts to use Vertical-Axis Wind Turbines in urban environments "promising," but notes they are too new to conclude much.[more]

Category: Rooftop & Urban Wind, Cleanfield

Audubon's Position on Wind Power

December 1, 2007,   by National Audubon Society

Audubon strongly supports properly-sited wind power as a clean alternative energy source that reduces the threat of global warming. . .

Category: Debunking Myths about Wind Energy, Wind Energy & the Environment

Wulf Test Field Panorama Views

November 27, 2007,   by Paul Gipe

The Wulf Test Field is situated at latitude 35° 4'20.64"N and longitude 118°23'40.12"W and is at an elevation of 4,600 feet (1,400 m) on the north facing flanks of the Tehachapi Mountains in the...[more]

Category: Wulf Small Wind Turbine Test Field Results

Wind Power Production in the Urban Environment

November 23, 2007,  

Technical paper by S. Tullis and his students at McMaster University examining the wind flow around and over buildings. The work was funded by the Ontario's Centres of Excellence.[more]

Category: Cleanfield, Rooftop & Urban Wind

CFD Simulation of Dynamic Thrust and Radial Forces on a Vertical Axis Wind Turbine Blade

November 23, 2007,  

Another technical article by S. Tullis on what was the Cleanfield 3.5 kW VAWT.[more]

Category: Cleanfield

Vibration Analysis of a Vertical Axis Wind Turbine Blade

November 23, 2007,  

Another research paper by S. Tullis and his students at McMaster Univeristy. The paper acknowledges funding from the Ontario Centres of Excellence and Cleanfield Energy.[more]

Category: Cleanfield

Presentation by Paul Gipe to Vent communautaire—La 3ième voie Énergie éolienne : Implication de la communauté

November 15, 2007,   by Paul Gipe

Moncton, New Brunswick

Category: Presentations by Paul Gipe

Presentation by Paul Gipe on Community Wind--Wind Energy As If People Matter

November 15, 2007,   by Paul Gipe

Moncton, New Brunswick, Canada

Category: Presentations by Paul Gipe

Presentation by Paul Gipe on Tarifs Efficaces et Équitables Option d’une Nouvelle Politique pour l’Amérique du Nord

November 15, 2007,   by Paul Gipe

Université de Moncton, Moncton, New Brunswick, Canada

Category: Presentations by Paul Gipe

Presentation by Paul Gipe on Tarifs Efficace et Equitables --New Policy Option for North America

November 15, 2007,   by Paul Gipe

Université de Moncton, Moncton, New Brunswick, Canada

Category: Presentations by Paul Gipe

Presentation by Paul Gipe on Michigan’s Renewable Energy Sources Act (HB 5218 2007)

November 5, 2007,   by Paul Gipe

Lansing, Michigan

Category: Presentations by Paul Gipe

Rooftop Wind Turbines at Montreal's Biosphere

November 4, 2007,   by Paul Gipe

The building houses exhibition on water and now on energy. There are two wind turbines installed on the roof as shown in the photos below.[more]

Category: Rooftop & Urban Wind

Turbine foes try to forge national opposition movement

September 24, 2007,   by Lydia DePillis

In 2005, the latest year for which figures are available, the alliance [Alliance to Protect Nantucket Sound] took in almost $3.3 million in donations, including $1.1 million from oil magnate Bill...

Category: News on Large Wind, Debunking Myths about Wind Energy

Cleveland's Urban Wind Turbine

September 5, 2007,   by Paul Gipe

Cleveland's Great Lakes Science Center installed a 225 kW Vestas V27 wind turbine in 2006 on the city's harbor front between the Cleveland Brown's football stadium and the science museum. The V27 is...[more]

Category: News on Large Wind, News on Wind Energy, Rooftop & Urban Wind

Solar Without Limits: Breaking Free from Net Metering

August 8, 2007,   by Paul Gipe

For more than a decade, senior environmental leaders in North America have been waiting for Germany's renewable energy market to collapse, an expectation tinged with schadenfreude.[more]

Category: News on Solar Energy, News on Small Wind

Presentation by Paul Gipe at the Michigan Agri-Energy Luncheon

August 3, 2007,   by Paul Gipe

Community Wind--The Third Way--Wind Energy As If People Matter

Category: Michigan FIT , Presentations by Paul Gipe

Mag-Wind Pyramidal Power

July 13, 2007,   by Paul Gipe

The pyramids have always been thought to contain some magical power. Maybe they do. Maybe Mag-Wind has found a way to tap into this magical power, because they certainly are not going to get much...[more]

Category: Small Vertical Axis Wind Turbines, Inventions & Questionable Wind Turbines, Rooftop & Urban Wind, Mag-Wind

Presentation to ASES 2007 Conference on Ontario's Standard Offer Contract Program

July 11, 2007,   by Paul Gipe

Category: Presentations by Paul Gipe

Preparing for Prime Time: What Small Wind Needs to Make Its Mark

July 10, 2007,   by Paul Gipe

Presentation to CanWEA's 2007 Conference

Category: Feed-in Tariffs for Small Wind

New report eases concerns over wind turbine noise

July 1, 2007,   by Department for Business, Enterprise and Regulatory Reform

Based on these findings, [the British] Government does not consider there to be a compelling case for further work into AM [Aerodynamic Modulation] and will not carry out any further research at this...

Category: Wind Noise, Health, & Safety

Presentation by Paul Gipe to the Canadian Auto Workers on Canada’s Renewable Future Going Beyond Kyoto

June 7, 2007,   by Paul Gipe

Category: Presentations by Paul Gipe

Farmers’ Guide to Wind Energy: Legal Issues in Farming the Wind

June 1, 2007,   by FLAG

This book serves as a guide to the many legal issues faced by farmers and rural landowners who seek to develop wind energy projects. . .

Category: Landowner Easements & Royalty Payments, News on Large Wind

Costs of Operation & Maintenance Summary

June 1, 2007,   by Paul Gipe

Various estimates of the running costs of large wind turbines. . .[more]

Category: Economic Calculations

Advanced Renewable Tariffs Pricing Worksheets

June 1, 2007,   by Paul Gipe

The following worksheets were developed for the Ontario Sustainable Energy Association and the Toronto Renewable Energy Cooperative in 2007 for the report Renewables without Limits: Moving Toward...[more]

Category: Economic Calculations

Falling in Love with Wind: How a small farm town traded its dairy cows for renewable energy

June 1, 2007,   by Joseph D'Agnese, NRDC

Category: Wind Energy & the Environment

Performance Testing of a Small Vertical-Axis Wind Turbine

June 1, 2007,  

Performance testing of the Cleanfield VAWT in the 9 m NRC wind tunnel. The test results showed nothing unusual and because they were performed in a wind tunnel are not considered comparable to real...[more]

Category: Cleanfield

Roof Top Over the Top in Britain

May 4, 2007,   by Paul Gipe

Has something happened to the water in Britain since they privatized the water companies? Someone should check because the British government has gone berserk.[more]

Category: Rooftop & Urban Wind, Renewable Devices Swift

Feed-in Tariffs by Miguel Mendonça--a Review

May 1, 2007,   by Paul Gipe

Miguel Mendonça's Feed-in Tariffs takes his place alongside Craig Morris' Energy Switch in explaining the success of Feed-In Tariffs to English speakers. Feed-in Tariffs joins a growing list of...[more]

Category: Books on Feed-in Tariffs, book Reviews

Presentation by Paul Gipe to the Alberta Agriculture and Food Department on Renewable Energy Policy

April 22, 2007,   by Paul Gipe

Category: Presentations by Paul Gipe

Presentation by Paul Gipe to the Alberta Agriculture and Food Department on Community Wind--The Third Way

April 22, 2007,   by Paul Gipe

Category: Presentations by Paul Gipe

Presentation by Paul Gipe on Ontario’s Renewable Potential

April 9, 2007,   by Paul Gipe

Category: Presentations by Paul Gipe

Presentation by Paul Gipe to Michgan Agri-Energy on Community Wind-- Wind Energy As If People Matter

March 10, 2007,   by Paul Gipe

Lansing, Michigan

Category: Presentations by Paul Gipe

Presentation by Paul Gipe to Bundesverband WindEnergie on the Wind Rush of 2005-2007

March 4, 2007,   by Paul Gipe

The North American Market is Like a Bucking Bronco at a Texas Rodeo--"Yee Ha! Ride Em Cowboys!"

Category: Presentations by Paul Gipe

What is the impact of wind farms on house prices?

March 1, 2007,  

The effect seems much less marked – if at all – for detached houses. The research also highlighted that, to some extent, wind farm developers are themselves avoiding the problem by locating their...

Category: Debunking Myths about Wind Energy

Le Grand Livre de l'Éolien par Paul Gipe

January 31, 2007,   by Paul Gipe

Le Grand Livre de l'Éolien est le livre de référence pour tous les acteurs du secteur et pour tous ceux qui souhaitent y prendre part à l'avenir. Il donne au lecteur une vue exhaustive sur une des...[more]

Category: Book Reviews of Books en Francais, News on Small Wind, News on Large Wind

Le Grand Livre de l'Éolien

January 31, 2007,   by Paul Gipe

Le Grand Livre de l'Éolien est le livre de référence pour tous les acteurs du secteur et pour tous ceux qui souhaitent y prendre part à l'avenir. Il donne au lecteur une vue exhaustive sur une des...[more]

Category: Books by Paul Gipe, Books in french

Performance Testing of a Small Vertical-Axis Wind Turbine

January 22, 2007,  

Another version of the paper by S. Tullis and his students at McMaster University on the wind tunnel tests of Cleanfield's 3.5 kW VAWT.[more]

Category: Cleanfield

American Energy Independence through Cooperative Investment in Wind Energy

January 21, 2007,   by Mike Kendall

The following is a response to an article written by Paul Gipe in July 2005 titled Beating Swords into Wind Turbines-or Solar Panels if You Like that argued if an equivalent amount of money had...[more]

Category: News on Wind Energy, News on Community Power

Wind Penetration Update Denmark 2007

January 12, 2007,   by Paul Gipe

At 8 pm on January 12, 2007 Danish wind turbines produced 58% of total Danish consumption or 2725 MW of a 4735 MW load. There is 3,100 MW of Danish wind turbines on line. Danish turbines produced...[more]

Category: Grid Integration

Wind Speed Measurement over a roof top in Edinburgh, Scotland by Hugh Piggott

January 6, 2007,   by Hugh Piggott

Category: Rooftop & Urban Wind

Unsubstantiated Claims of Rooftop Wind Turbines

January 5, 2007,   by Hugh Piggott

The following is an open letter by Hugh Piggot to BWEA calling for action on the unsubstantiated claims by promoters of rooftop wind turbines in Britain. Hugh Piggott is one of the world's most...[more]

Category: Rooftop & Urban Wind, Renewable Devices Swift

Analysis of the Price Effect of Renewable Electricity Generation on Spot Market Prices in Germany

January 1, 2007,   by Frank Sensuss, Massimo Genose, and Mario Ragwitz

by Frank Sensuss, Massimo Genose, Mario Ragwitz (on the Merit Order Effect)

Category: Grid Integration

The Citizen Powered Energy Handbook: Community Solutions to a Global Crisis

December 18, 2006,   by Paul Gipe

Greg Pahl's idea of shifting the debate from Not In My Back Yard to Please, In My Back Yard with community ownership is an idea whose time has come. That's the central theme of his The Citizen...[more]

Category: book Reviews, News on Community Power

Midwest Wind Integration Study

December 15, 2006,   by Paul Gipe

The Midwest Wind Integration Study, which was required by the Minnesota legislature in 2005 to evaluate reliability and other impacts of higher levels of wind generation, found that the total...[more]

Category: Grid Integration

Choosing Windpower by Hugh Piggott

December 1, 2006,   by Paul Gipe

Hugh Piggott is one of the English-speaking world's true experts on small wind turbines, especially for off-the-grid applications. [more]

Category: book Reviews, News on Small Wind

Vingesus--Whisper of Wings

December 1, 2006,   by Paul Gipe and Nancy Nies

Ok, we liked this book because it has lots of pictures: pictures of wind turbines, pictures of people, pictures of a Danish table cloth, all sorts of pictures. We admit it. We also liked it because...[more]

Category: book Reviews, News on Community Power

Éoliennes: Quand le vent nous eclaire (Wind Turbines: When the wind lights our way) by Philippe Ollivier

December 1, 2006,   by Paul Gipe

Ollivier is journalist living in southern France's Languedoc-Roussillion region, the country's premier wind resource area. As a journalist, Ollivier is all-too-familiar with the controversy...[more]

Category: Dispelling Myths en Francais, Wind Energy & the Environment, Reviews of Wind Books en Francais, book Reviews, Book Reviews of Books en Francais

Switching to Renewable Power by Volkmar Lauber--A Review

November 30, 2006,   by Paul Gipe

Volkmar Lauber is one of the world's pre-eminent academics specializing in renewable energy policy. Lauber, a professor political science at the University of Salzburg, writes fluenty in English,...[more]

Category: Books on Feed-in Tariffs, book Reviews

Renewable Energy Resources by John Twidell & Tony Weir

November 30, 2006,   by Paul Gipe

Massive. That's the first word that comes to mind when picking up the 600-page tome by John Twidell and Tony Weir. Of course the broad subject of renewable energy deserves the treatment and I can't...[more]

Category: Reviews Engineering & Technical Books

Wind Energy: Technology and Planning CD-ROM

November 29, 2006,   by Paul Gipe

The World Wind Energy Association (WWEA) issued a bilingual CD-ROM on wind energy at its New Delhi conference in 2006. [more]

Category: book Reviews

Krieg um Öl oder Frieden durch die Sonne (War over Oil or Peace through the Sun)

November 29, 2006,   by Paul Gipe

Yes, Franz Alt's powerful little book is in German. And yes there's perhaps only 100 million native German speakers in the world. But that's no excuse for ignoring this book. With rudimentary German...[more]

Category: Reviews of Wind Books auf Deutsch, Book Reviews of Books auf Deutsch, Electric Vehicles

Energy Balance of Wind Turbines

November 17, 2006,   by Paul Gipe

  Adapted from Wind Energy Comes of Age, by Paul Gipe, John Wiley & Sons, 1995. All rights reserved. Much of this was written in 1993 and relied on reports published in the early 1990s. Studies...[more]

Category: Wind Energy & the Environment, Debunking Myths about Wind Energy

Setbacks in California

November 1, 2006,   by California Wind Energy Collaborative

There is no one setback from residences for large wind turbines in California. Setbacks are regulated by individual counties. In 2006, the University of California at Davis did a survey of setback...

Category: Wind Noise, Health, & Safety, Debunking Myths about Wind Energy

Roof Top Windsave in Scotland

October 27, 2006,   by Paul Gipe

Stewart C. Russell sent these photos of a Windsave installation in Scotland. The turbine is near his parents house and is installed on an expensive home. Note the sheltering effect from both the...[more]

Category: Rooftop & Urban Wind

Robert Dreeszen's Roof Mounted Wind Turbines

October 25, 2006,   by Robert Dreeszen

I am a retired IBM engineer living in a very remote area of Alaska who is hooked on renewable energy. I am not soliciting advice just merely passing along some photos and very limited experiences you...[more]

Category: Rooftop & Urban Wind

The bizarre dance of wind power: Local opponents and right-wing think tanks

October 7, 2006,   by Erik Curren

First, they raise questions about the role of wind as a source of electricity against America's main source of electric power today - coal, much of which is mined and burned in Appalachia. Second,...

Category: Debunking Myths about Wind Energy, Wind Energy & the Environment, Wind Noise, Health, & Safety

Vanessa Skarski's Account of Her Father's Death on a Small Wind Turbine

October 2, 2006,   by Paul Gipe

Robert Skarski died in 1993 while installing a small wind turbine at his Illinois home. He was killed when the tower he was on buckled and fell to the ground. [more]

Category: Accidents & Safety

Cleanfield McMaster 'My' VAWT (Vertical Axis)

September 18, 2006,  

This is an exchange on a message board by a student engineer at McMaster University displaying the VAWT they had developed and installed on a rooftop of the campus in Hamilton, Ontario. This VAWT...[more]

Category: Cleanfield

German Project Size Decreases in 2005

August 31, 2006,   by Paul Gipe

Neue Energie, 8/2006, reports that where in the past German projects would contain 30 to 40 turbines, the trend is toward projects with fewer turbines, from three to six each. The reason is not...[more]

Category: Wind Statistics

Wind Penetration Update 2006

August 31, 2006,   by Paul Gipe

New Energy reports (2/2006) that on 16 February, 2006 during the peak of consumption in Spain at 9:25 pm, Spanish wind turbines delivered 20% of total generation. This was during a period of low...[more]

Category: Grid Integration

Presantation by Paul Gipe to WIDRC on Advanced Renewable Tariffs : The Most Effective Method for Rapidly Developing Renewable Energy

July 31, 2006,   by Paul Gipe

Madison, Wisconsin

Category: Presentations by Paul Gipe

Presentation by Paul Gipe on Developing Distributed Generation with Advanced Renewable Tariffs

July 31, 2006,   by Paul Gipe

Madison, Wisconsin

Category: Presentations by Paul Gipe

Energy Switch: Proven Solutions for a Renewable Future by Craig Morris--A Review

July 28, 2006,   by Paul Gipe

How North America Can Learn From Renewable Energy Success Stories in Europe[more]

Category: book Reviews, Books on Feed-in Tariffs, Renewable Energy

Roof Top Wind in Inaction

July 10, 2006,   by Paul Gipe

With the flap in early July about roof top wind hype in Great Britain, I was surprised to find the controversy dogging my steps into the Sierra Nevada.[more]

Category: Rooftop & Urban Wind

Response by Paul Gipe to Dr. David Anderson Renewable Devices Swift Turbines

July 3, 2006,   by Paul Gipe

Your claims cannot be substantiated by the data made available to the public and it is likely they cannot be verified in the field. [more]

Category: Rooftop & Urban Wind, Inventions & Questionable Wind Turbines, Shrouded & Ducted Wind Turbines, Renewable Devices Swift

Whisper H40 Final Report

June 15, 2006,   by Paul Gipe

We returned to the site to remove the turbine for repair. The blades were removed without incident. However when removing the generator-yaw assembly the entire assembly came off in my hands without...[more]

Category: Wulf Small Wind Turbine Test Field Results

USDA Noise and Power Curve Tests of Small and Household-Size Wind Turbines

June 14, 2006,   by Paul Gipe

he U.S. Department of Agriculture's Agricultural Research Service has a long history of testing wind turbines at its research station near Bushland, Texas. They do good work. They're fair and...[more]

Category: Small Turbine Testing

IEC Wind Turbine Classes

June 7, 2006,   by Paul Gipe

For a review of Wind Energy Handbook by Tony Burton and for ordering information see Wind Energy Handbook.   [more]

Category: News on Large Wind

Windmill-Wildflower Hike: an Annual Spring Tradition

May 15, 2006,   by Paul Gipe

Event Draws Attention to Pacific Crest Trail in the Tehachapi Pass Event Held 21 Years in 2006![more]

Category: Wind Energy & the Environment

Small Wind Turbine Size to Meet Household Consumption

May 2, 2006,   by Paul Gipe

You can't get something for nothing. North Americans who think a micro or mini wind turbine will meet all their household consumption are in for a rude surprise. A wind turbine with a rotor 1-2...[more]

Category: News on Small Wind, News on Large Wind

Urban Turbines: What Are They and What Makes Sense

May 1, 2006,   by Paul Gipe

Urban wind turbines. The image is immediately appealing. Most people live in cities. Most people want to use wind and solar energy. Thus, there must be ways for those living in cities--urbanites--to...[more]

Category: Rooftop & Urban Wind

The End of One Danish Windmill Co-operative

February 9, 2006,   by Jane Kruse, Former Chairman of the Hornstrup Mark Windmill Cooperative

Category: News on Wind Coop

Generator Ratings & Capacity Factors: Why You Should Avoid Them

January 23, 2006,   by Paul Gipe

  Generator Size and Swept Area Newcomers to wind energy and even some old-timers who should know better often equate the size of a wind turbine to it's generator rating. A Vestas V80 for example...[more]

Category: News on Wind Energy, News on Large Wind

The case (or not) for Roof Mounted Wind Turbines by Nick Martin

January 1, 2006,   by Nick Martin

Are you one of the many people who have read or heard that the next generation of roof mounted wind turbines will provide all the electricity needs of the average semi in the UK?

Category: Rooftop & Urban Wind

Rooftop Turbines: Rooftop Mounting and Building Integration of Wind Turbines

December 12, 2005,   by Paul Gipe

Why You Shouldn't Do It[more]

Category: Rooftop & Urban Wind, News on Large Wind

Presentation by Paul Gipe on Colloque sur L’Énergie Éolienne (Version Francaise)

December 8, 2005,   by Paul Gipe

University of Quebec a Rimouski, Rimouski, Quebec, Canada

Category: Presentations by Paul Gipe

Allgaier in Holzhausen, Rheinland-Pfalz, Germany

December 4, 2005,   by Paul Gipe

December 4, 2005 Typical of rooftop turbines, the rotor is tied down on this non-operating WE-10 Algaier turbine in Holzhausen, Rheinland-Pfalz, 2005. The turbine is noteworthy in its own right. The...[more]

Category: News on Small Wind

Wind Energy Blows into McMaster

November 5, 2005,  

News item from McMaster University's student newspaper announcing the development of a Vertical-Axis Wind Turbine.[more]

Category: Cleanfield

Presentation by Paul Gipe on L’Énergie Éolienne et les Communautés Eloignées

October 19, 2005,   by Paul Gipe

(in English), University of Quebec a Rimouski, Colloque Eolienne Eloigne

Category: Presentations by Paul Gipe

Developing Wind Power Projects: Theory and Practice by Tore Wizelius

August 8, 2005,   by Paul Gipe

Long-time wind energy advocate Tore Wizelius is one of the Swedish pioneers of the technology. Finally his thoughtful book on wind energy and its integration into communities is now available to...[more]

Category: Reviews Engineering & Technical Books

Coal's High Environmental & Social Cost in Ontario

July 5, 2005,   by Paul Gipe

  Government report says Ontario coal-fired power plants cost nearly $0.13 CAD/kWh ($0.10/kWh) in environmental and social impacts. Ontario's ruling party swept to power in the fall of 2003 on...[more]

Category: Wind Energy & the Environment, Debunking Myths about Wind Energy

Net-Metering? It's Time for Wind & Solar Without Limits

June 27, 2005,   by Paul Gipe

The renewable lists buzz with discussions about net metering. Renewable's advocates spend hours, days, years even trying to implement net metering over utility objections. Why bother? Net metering is...[more]

Category: News on Small Wind

Presentation by Paul Gipe on An Ontario NGO’s Campaign for Advanced Renewable Tariffs

June 21, 2005,   by Paul Gipe

Antigonish, Nova Scotia

Category: Presentations by Paul Gipe

Wind Power in Power Systems

June 16, 2005,   by Paul Gipe

Wind Power in Power Systems is edited by the very capable Thomas Ackermann. It is a massive 691 pages on the status of modern wind turbines and how they are integrated into power systems. The book...[more]

Category: Reviews Engineering & Technical Books

Status of Wind Energy in the USA in 2005

June 10, 2005,   by Paul Gipe

Category: Wind Statistics

Presentation on Building a Sustainable Power Supply with Renewable Energy

May 25, 2005,   by Paul Gipe

For New Zealand's Energy Efficiency and Conservation Authority

Category: Presentations by Paul Gipe

Swift Turbine Specs Look Dubious by Stewart Russell

May 9, 2005,   by Stewart Russell

Category: Small Turbine Product Reviews, Rooftop & Urban Wind

Presentation by Paul Gipe to Natural Resources Canada on World Wind Energy Development & Advanced Renewable Tariffs

May 4, 2005,   by Paul Gipe

Ottawa, Ontario

Category: Presentations by Paul Gipe

Doug Selsam's Super Twin at Wulf Field

May 1, 2005,   by Paul Gipe

Selsam's SuperTwin had operated unattended from March 2008 through sometime in the spring of 2009.[more]

Category: Wulf Small Wind Turbine Test Field Results

Presentation by Paul Gipe at St. Francis University on World Wind Energy Development & Advanced Renewable Tariffs

April 21, 2005,   by Paul Gipe

Loretto, Pennsylvania

Category: Presentations by Paul Gipe

Presentation by Paul Gipe to the Ontario Federation of Farmers on Coping with the Power Crisis

April 5, 2005,   by Paul Gipe

Regaining Control by Cutting Demand and Increasing Renewable Energy--Not Quick, Not Cheap, Not Easy But Worth Every Cent

Category: Presentations by Paul Gipe

The Myths & Mysticism of Vertical Axis Wind Turbines

February 1, 2005,   by Mick Sagrillo

At least several times a year, yet another announcement about a “technological breakthrough” arrives in my e-mail box. Invariably, the device being “unveiled” is a vertical axis wind turbine, and in...

Category: Small Vertical Axis Wind Turbines

The Costs of Wind's Variability: Is There a Threshold?

February 1, 2005,   by Joseph F. DeCarolis and David W. Keith

Even with the added costs to deal with intermittency, wind is roughly competitive with other generation technologies under a strong carbon constraint.

Category: Grid Integration

Presentation by Paul Gipe on OSEA Price-Setting Workshop with Bernard CHABOT of ADEME

January 9, 2005,   by Paul Gipe

Category: Presentations by Paul Gipe

Why I hate Wind Farms and Think There Should be More of Them

January 1, 2005,   by Peter Harper

Centre for Alternative Technology Machynlleth, Wales I was visiting a planning office in Sydney, and a scrap of paper pinned to the wall caught my eye. It bore a short poem headed "The...[more]

Category: Debunking Myths about Wind Energy, Wind Energy & the Environment

The Wind in My Sails by Peter Harper

January 1, 2005,   by Peter Harper

Centre for Alternative Technology Machynlleth, Wales Let's get a few things straight at the beginning. Obviously the debate hinges on both the gravity and urgency of the climate change situation....[more]

Category: Debunking Myths about Wind Energy, Wind Energy & the Environment

Peter Harper's Response to Rob Collister's cri de coeur Regarding Wind Farms

January 1, 2005,   by Peter Harper

Centre for Alternative Technology Machynlleth, Wales   Dear Editor While I appreciate the sincerity and good intentions of Rob Collister's cri de coeur regarding wind farms in May/June...[more]

Category: Debunking Myths about Wind Energy, Wind Energy & the Environment

The Economics and Environmental Impacts of Large-Scale Wind Power in a Carbon Constrained World

December 2, 2004,   by Joseph Frank DeCarolis

When wind serves upwards of 60 percent of demand, the model chooses to install more GT than GTCC capacity because the lower rates of gas utilization dictate the use of lower efficiency, lower...

Category: Grid Integration

Presentation by Paul Gipe to the Forum on Renewable Energy Tariffs: Market Mechanism for Rapid Deployment

October 21, 2004,   by Paul Gipe

Category: Presentations by Paul Gipe

Presentation by Paul Gipe to CanWEA on Potential Economic Benefits of Wind Energy

October 14, 2004,   by Paul Gipe

Category: Presentations by Paul Gipe

Wind's Up: Planning the Future Now

September 27, 2004,   by Mark Ashby

The Resource Management Act, plans developed under it, and RMA processes are capable of facilitating wind energy development and of dealing with the range of effects associated with a wind farm....

Category: News on Large Wind, Wind Energy & the Environment

Wind Turbines and Parks

September 17, 2004,   by Paul Gipe

In response to an announcement about a hike among wind turbines in California's Tehachapi Pass a question was raised about the use of wind turbines in or around parks or other public use areas. The...[more]

Category: Wind Energy & the Environment

Myth: Turbines are a health hazard

September 1, 2004,   by Department for Business Enterprise and Regulatory Reform

In 25 years of wind generation, with 68,000 turbines now worldwide, there are no significant reports of health issues. This includes Denmark, whose turbine density is 30 times that of the UK.

Category: Wind Noise, Health, & Safety, Debunking Myths about Wind Energy

The economics of large-scale wind power in a carbon constrained world

July 31, 2004,   by Joseph F. DeCarolis, David W. Keith

We find that, with somewhat optimistic assumptions about the cost of wind turbines, the use of wind to serve 50% of demand adds ~1-2¢/kWh to the cost of electricity, a cost comparable to that of...

Category: Grid Integration

Draft WWEA Best Practice Guidelines

July 1, 2004,   by WWEA

Category: Wind Energy & the Environment

'Wind power in the UK: how planning conditions and financial arrangements affect outcomes'

June 28, 2004,   by David Toke

This article reviews some planning and financial conditions facing wind power development in the UK. Overall the 2002-2003 period has seen a big increase in planning consents. . .

Category: Great Britain, News on Large Wind

Stewart Russell's commentary on Windsave

May 9, 2004,   by Stewart Russell

Stewart knows what he's talking about. He's a pro.

Category: Small Turbine Product Reviews, Rooftop & Urban Wind

Smart Generation: Powering Ontario With Renewable Energy

April 1, 2004,   by Paul Gipe

The report, authored by leading experts in the field, summarizes the potential of five sources of renewable energy – wind, hydropower, biomass, geothermal and solar. It analyzes the economic...[more]

Category: News on Wind Energy, News on Feed in Tariffs

Current experience with supporting wind power in European electricity markets by ISET, Kassel

March 28, 2004,   by Martin Hoppe-Kilpper

Category: Germany FIT, Europe FIT, News on Large Wind

Sobering Altamont Bird Report Issued

March 14, 2004,   by Paul Gipe

A much anticipated update on wind turbines and birds in California's Altamont Pass concludes that the problem is more severe than once believed. The report by biologists Carl Thelander and Sean...[more]

Category: News on Large Wind, Wind Energy & the Environment

Wind Turbine Design: With Emphasis on Darrieus Concept by Ion Paraschivoiu

January 22, 2004,   by Paul Gipe

Ion Paraschivoiu is Aeronautical Chair Professor at École Polytechnique de Montréal and he brings to the cornucopia of new books on wind energy his specialty: Darrieus turbines. Like David Spera in...[more]

Category: Reviews Engineering & Technical Books

Wind Energy Explained: Theory, Design and Application

January 20, 2004,   by Paul Gipe

It's been many years since the publication of new engineering texts on wind energy. But in 2001 a flood of new books in English began flowing from publishers: two substantial volumes by John Wiley &...[more]

Category: Reviews Engineering & Technical Books

Wind Energy Handbook

January 20, 2004,   by Paul Gipe

The Wind Energy Handbook is one of a trio of big wind energy books by John Wiley & Sons'UK office. After a dearth of new wind energy titles in English for nearly a decade, suddenly there are two...[more]

Category: Reviews Engineering & Technical Books

Winds of Change: A comparative study of the politics of wind energy innovation in California and Denmark

January 19, 2004,   by Paul Gipe

Winds of Change by Rinie van Est is a masterly work of meticulous research that could well become a classic in its field. It should be required reading for all energy planners, and energy industry...[more]

Category: book Reviews, History of Wind Power

Wind Power Plants: Fundamentals, Design, Construction and Operation by R. Gasch, J. Twele

January 19, 2004,   by Paul Gipe

The book, edited by Robert Gasch, began as course notes for Gasch's popular course on wind turbine design for engineering students at the Technische Universität in Berlin. Many of the book's 15...[more]

Category: Reviews Engineering & Technical Books

Cost-effective Design & Operation of Variable Speed Wind Turbines: Closing the Gap between Control Engineering & the Wind Engineering Community by David-Pieter Molenaar

January 19, 2004,   by Paul Gipe

"Free, and Still too Expensive" opens Molenaar's doctoral thesis on designing variable speed wind turbines. Molenaar's work is not for the faint of heart. Much of it is well beyond my skill level....[more]

Category: Reviews Engineering & Technical Books

Wind Power: Renewable Energy for Home, Farm, and Business (2004)

January 1, 2004,  

Gipe has condensed more than two decades of working with and writing about wind energy into Wind Power: Renewable Energy for Home, Farm, and Business. An extensive revision of his successful earlier...[more]

Category: Books-Wind Power, Books by Paul Gipe

Thoughts on Doing It Yourself

January 1, 2004,   by Paul Gipe

  Adapted from the book Wind Power: Renewable Energy for Home, Farm, and Business. When I wrote my first book on wind energy in 1982, I believed most homeowners with a modicum of tool skills...[more]

Category: Accidents & Safety

The Measurement of Low Frequency Noise at Three UK Wind Farms

January 1, 2004,   by Hayes McKenzie

The Measurement of Low Frequency Noise at Three UK Wind Farms--Of the 126 wind farms operating in the UK, five have been reported low frequency noise problems. Therefore, such complaints are the...

Category: Wind Noise, Health, & Safety, Debunking Myths about Wind Energy

Man Falls to Death from E66 in Germany

December 22, 2003,   by Paul Gipe

On October 16, 2003 a 25-year old technician fell inside a 100-meter tall Enercon E66 tower, struck his head, and died according to an account in a local German newspaper. The man, unnamed in the...[more]

Category: Accidents & Safety

Summary of Power Curves Measured at the Wulf Test Field

December 8, 2003,   by Paul Gipe

December 8, 2003 by Paul Gipe For an explantion of the following chart see the article on measuring power curves. Though some of the turbines do not meet their manufacturer's advertised power...[more]

Category: Wulf Small Wind Turbine Test Field Results

[Toronto's] Exhibition Place [WindShare] Wind Turbine Bird Monitoring Program in 2003

December 1, 2003,   by Ross D James and Glenn Coady

Only two dead birds were found, one in spring and one in autumn. . . The rate of mortality is absolutely insignificant when compared to the thousands that are killed each year in Toronto at tall...

Category: Wind Energy & the Environment, Debunking Myths about Wind Energy

Sierra Club Wind Siting Advisory Document

November 25, 2003,   by Paul Gipe

  Note: The Sierra Club is a grass roots or member-driven environmental organization in the United States founded by the naturalist John Muir. It has about 700,000 members nationwide. The Club has...[more]

Category: Wind Energy & the Environment

Simple Rules for Small Wind Turbine Design by Michael Klemen

November 19, 2003,   by Michael Klemen

Simple Rules for Small Wind Turbine Design by Michael Klemen used with permission. [more]

Category: News on Small Wind

Specifications of Small Wind Turbines Tested for Noise

November 4, 2003,   by Paul Gipe

Specifications of Small Wind Turbines at Wulf Test Field   Rotor Swept Rated Number Approx.   Tip Speed   Tip Speed Turbine Dia. Area Power of rpm   m/s   Ratio   m m2 W Blades @ 8 m/s @ 10...[more]

Category: Wulf Small Wind Turbine Test Field Results

Cruising World Noise Measurements

November 4, 2003,   by Paul Gipe

Cruising World Noise Measurements Turbines Rotor Swept Rated SPL* Tested Dia. Area Power @11 knots   m m2 W dBA Rutland 913 0.91 0.65 70 75 Ampair 100 0.92 0.66 50 78 Air 403 1.17 1.08...[more]

Category: Wulf Small Wind Turbine Test Field Results

Summary of Small Wind Turbine Noise Measurements in dBA

November 4, 2003,   by Paul Gipe

Summary of Small Wind Turbine Noise Measurements at Wulf Test Field in dBA   Hub Reference Slant     Sound   Projected   Projected Turbine Height Position Distance SPL   Power   100   to 45...[more]

Category: Wulf Small Wind Turbine Test Field Results

Comparison of Noise from Small Wind Turbines

November 4, 2003,   by Paul Gipe

Comparison of Noise from Small & Selected Medium-Size Wind Turbines                 ECN/Van der Borg   Difference Turbine Rotor Swept Rated Tip Speed Sound Power   Data Projection @ 8 m/s...[more]

Category: Wulf Small Wind Turbine Test Field Results

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