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News & Articles on Household-Size (Small) Wind Turbines

The Almost Forgotten Story Of The 1970s East Village Windmill

September 29, 2014,   by Shayla Love

I first heard of the East 11th Street windmill in hushed voices, over cafe con leches at a Cuban restaurant on Avenue C.

Category: News on Small Wind, History of Wind Power

GSE: Italy to Maintain FIT for Small Wind Turbines

June 18, 2014,  

The tariff for small wind between 20 and 200kW for all the connected turbines in 2014 and 2015 will remain 0.268 €/kWh

Category: Italy FIT, Small Wind folder

Ecotricity buys Evance out of administration

May 16, 2014,  

Evance have an innovative new windmill design 90% of the way through development and nearing the production stage, following the manufacture and supply of almost 2,000 of smaller windmills –between...

Category: Small Wind folder

Quiet Revolution Goes Quiet: Maker of QR5 VAWT Files for Bankruptcy

May 7, 2014,   by Paul Gipe

Quiet Revolution, the one-time manufacturer of an architecturally dramatic helical wind turbine, filed for bankruptcy on 15 April in London. Note: The following is adapted from the forthcoming...[more]

Category: Small Vertical Axis Wind Turbines, News on Small Wind

Poor Comparison Between Small VAWT and Small HAWT: UGE’s VisionAIR Pushing the Limits. . . of Hype

April 23, 2014,   by Paul Gipe

In the spring of 2014, Urban Green Energy (UGE) announced with much fanfare that they had completed third-party performance testing on a new product, the VisionAIR wind turbine. As press releases for...[more]

Category: Small Vertical Axis Wind Turbines

Vertical Axis Wind Turbines: Great In 1890, Also-rans In 2014

April 7, 2014,   by Mike Barnard

Vertical axis wind turbines (VAWT) continue to get attention, press and R&D funding. Antagonists of mainstream wind generation continually point at them as if they were a superior technology. People...

Category: Small Vertical Axis Wind Turbines

WWEA: 2014 Small Wind Report

March 24, 2014,  

The world market for small wind has continued to grow: As of the end of 2012, a cumulative total of at least 806’000 small wind turbines were installed all over the world. This is an increase of 10 %...

Category: Small Wind folder

Vertical axis wind turbines aren’t replacing horizontal axis offshore turbines

February 18, 2014,   by Mike Barnard

Over the past few months, an interesting wrinkle on the vertical-axis-wind-turbines-are-better mythology has surfaced: that they are superior offshore and that many countries are investing heavily in...

Category: Small Vertical Axis Wind Turbines, News on Large Wind

Rebuttal to Another Eggbeater Oh My--Saskatoon’s Lux

November 15, 2013,   by Glen Lux

Thank you for your critique on the CBC article. I do not expect to get praise or support from anyone in the wind industry for the efforts that I have made, but I do wish you and others, would keep an...[more]

Category: Small Vertical Axis Wind Turbines

Another Eggbeater Oh My--Saskatoon’s Lux: More Over-the-top VAWT Hype

November 8, 2013,   by Paul Gipe

It must be a slow news week out on the Canadian Prairies. No big city mayor smoking crack or threatening to kill someone in Saskatchewan to grab attention. Instead they’re touting another—yes...[more]

Category: Small Vertical Axis Wind Turbines

FBI: Canadian Indicted for Securities and Wire Fraud Touting Mag-Wind

October 24, 2013,  

United States Attorney Thomas G. Walker announced that on October 18, 2013, a federal grand jury in Raleigh, North Carolina returned a two-count indictment charging JAMES ALAN ROWAN with securities...[more]

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

The Journal: UK farmers turning to wind turbines to supplement income

October 23, 2013,   by Jo Blakemore

A dramatic fall in income, coupled with rising energy costs, is seeing increasing number of farmers turning to wind turbines as an additional source of revenue ahead of looming energy regulator...

Category: News on Large Wind, News on Small Wind, News on Community Power

Britain Surpasses 100 MW of Small Wind

October 22, 2013,   by Paul Gipe

While the British government’s inexplicable decision to build two new nuclear reactors has dominated the headlines, Great Britain has meanwhile achieved two little-heralded milestones in renewable...[more]

Category: News on Small Wind, Feed-in Tariffs for Small Wind, Great Britain

Renewables UK: Small and Medium Wind UK Market Report 2013

October 17, 2013,  

Small and medium wind turbine installations had a total generating capacity of over 102MW at the end of 2012. For the fourth year in a row, the biggest growth in installed capacity was observed in...

Category: News on Small Wind

Questionable Turbines and Siting Give Architects, LEED, Green Builders, and Wind Bad Name

September 9, 2013,   by Paul Gipe

Updated with a photo of the 18 Venger V2 Savonius turbines on the Oklahoma Medical Research Foundation building in Oklahoma City, Oklahoma.[more]

Category: News on Small Wind, Inventions & Questionable Wind Turbines, Small Vertical Axis Wind Turbines, Rooftop & Urban Wind, LEED LEED

Gizmag: Are "school of fish" turbine arrays a red herring?

July 23, 2013,   by Mike Barnard

Following the latest round of coverage, Gizmag takes a deeper look at his concept, and wonders whether the idea of packing turbines into as tight a space as possible might overlook some wind energy...

Category: Small Vertical Axis Wind Turbines, Mariah Windspire

Now Danish Feed in Tariff and Tax Break for Gaia-Wind Turbines

July 16, 2013,  

In addition to the market price, Gaia-Wind turbine owners will now get a feed in tariff premium of øre250/kWh (approx. 0.35 EUR/kWh).

Category: Feed-in Tariffs for Small Wind

Wind Cube Squarely Over the Top (Now Re-Branded as Wind Sphere)

July 8, 2013,   by Paul Gipe

Is this another example of Federal capital subsidies driving exceptionally overpriced "wind turbines"?[more]

Category: Shrouded & Ducted Wind Turbines, LEED LEED

Small Wind Conference Gives Gipe Lifetime Achievement Award

July 2, 2013,  

The Small Wind Conference presented Paul Gipe with its first Lifetime Achievement Award on 19 June 2013 at its annual award ceremony in Stevens Point, Wisconsin.[more]

Category: Small Wind folder

Taylor University Endurance Turbines—Busman’s Holiday

July 1, 2013,   by Paul Gipe

I was making the rounds to Upland, Indiana as part of a family reunion. We’d just stuffed ourselves on ice cream at Ivanhoe’s, an ice cream parlor worth the drive from our hometown of...[more]

Category: Small Wind folder

Mein Gott! Costly VAWT Installed on Cologne High-Rise

July 1, 2013,   by Paul Gipe

I’ve written a lot about the folly of “building integrated” wind turbines, or the corollary, roof top wind turbines. It’s a plague here in the US, Britain, and the Netherlands. To reiterate, the...[more]

Category: Small Vertical Axis Wind Turbines

Another Poorly Sited Hoosier VAWT Vying for Worst Turbine Install

June 29, 2013,   by Paul Gipe

Hoosiers have definitely drunk the cool-aid. Worse, it's another example of architectural greenwashing. According local press reports the Nature Conservancy has installed the "crown jewel" of its...[more]

Category: Worst Turbine Install in History, News on Small Wind, Small Vertical Axis Wind Turbines, LEED LEED

Earth Techling: Making Small Wind Work Takes Big Planning

June 29, 2013,   by Pete Danko

It’s a lovely thought, small wind turbines providing clean supplemental power at your home or in your community. But you don’t have to go far to find tales of small-wind woe, with newfangled...

Category: News on Small Wind

Defunct Windspire Wins Greenwashing Award

June 28, 2013,   by Paul Gipe

In the annals of greenwashing, no wind turbine company has done more to develop the technique to a fine art. It’s as if the company’s entire business model was built on finding participants who...[more]

Category: Mariah Windspire, LEED LEED

Decommissioning Guide to Small Wind Turbines in the Built Environment

June 1, 2013,   by Kimberly King

Password: mistralmetrodenizen2013--The aim of this framework document is that it can serve as guidance, as far as it is practical, to those seeking to navigate and obtain approval...

Category: Small Wind folder

Photos of Small Wind Turbines by Paul Gipe Posted

May 10, 2013,   by Paul Gipe

I've posted photos of small wind turbines from my archives, including photos of Aircon, Aeroman, Bergey, Easywind, Endurance, Enertech-AOC, Fayette, Gaia, Grumman, Jacobs, Mehrkam, Northern Power,...

Category: Small Wind folder

Invest carefully; wind energy ‘innovations’ are rarely kosher

May 8, 2013,   by Mike Barnard

The wind industry isn’t going to be disrupted by someone with an idea and a Powerpoint pitch. If someone is approaching you with a great investment opportunity based on a ‘new’ wind generation...

Category: Small Vertical Axis Wind Turbines, Inventions & Questionable Wind Turbines

Gorlov Helical Wind Turbine

April 26, 2013,   by Paul Gipe

The helical rotor design is reputed to reduce or eliminate the torque ripple encountered in traditional two-blade Darrieus or eggbeater turbines.[more]

Category: Small Vertical Axis Wind Turbines, LEED LEED

FloWind’s Extended Height to Diameter VAWT

April 23, 2013,   by Paul Gipe

FloWind’s development of the Extended Height-to-Diameter (EHD) Vertical Axis Wind Turbine was the last gasp of Darrieus wind turbine development in the US.[more]

Category: Small Vertical Axis Wind Turbines

Photos of Vertical Axis Wind Turbines

April 19, 2013,   by Paul Gipe

I've added photos of historical interest to my web pages on Vertical Axis Wind Turbines (VAWTs) and Darrieus turbines of various designs. . .[more]

Category: Small Vertical Axis Wind Turbines, News on Large Wind Turbines

Mariah Windspire VAWT Measured Performance

March 22, 2013,   by Paul Gipe

There are now several measured power curves of the Mariah Windspire publicly available. This is one of the very few contemporary household-size (small) Vertical Axis Wind Turbines (VAWTs) to complete...[more]

Category: Small Vertical Axis Wind Turbines, Mariah Windspire

WWEA Small Wind World Report 2012

March 21, 2013,  

The total number of small wind turbines installed all over the world reached 730'000 units as of the end of 2011 after 656'000 units in 2010, after 521'000 in 2009 and 460'000 in 2008. These small...

Category: Small Wind folder

Crissy Field Small VAWT Demonstration Photos Posted

March 20, 2013,   by Paul Gipe

These are series of photos of a "demonstration" of "urban wind" using five Vertical Axis Wind Turbines (VAWTs) from three different manufacturers at Crissy Field in San Francisco. They are all very...

Category: Small Vertical Axis Wind Turbines

The Evolution of Rotor and Blade Design

March 7, 2013,   by Jim Tangler

An insightful summary of how the aerodynamic properties of VAWTs differ from HAWTs by an authority on aerodynamics presented at the 2000 AWEA conference. . .

Category: Small Vertical Axis Wind Turbines

Sandia 1982 Proceedings of VAWT Design Seminar—Some Brief Comments

March 7, 2013,   by Paul Gipe

It is unlikely that any “modern” reinvention of Darrieus designs can perform any better than the experimental turbines Sandia and its contractors developed during the late 1970s and early 1980s. . .[more]

Category: Small Vertical Axis Wind Turbines

Power Performance Test Report for the Windspire by Windward Engineering

February 28, 2013,  

The Windspire is a vertical‐axis gyromill. The H‐rotor is 1.22 m (4 ft) in diameter by 6.1 m (20 ft) tall, capturing a swept area of 7.43 m2 (80 ft2). The data presented in this report was collected...

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

Arizona Daily: Last days for local turbines?

February 21, 2013,   by Joe Ferguson

Carol Curtis, the director of the Coconino County Career Center, said employees were told by Southwest Windpower officials Wednesday that the facility in Flagstaff was going to be closed and they...

Category: Small Wind folder

Market, cost, and technical analysis of vertical and horizontal axis wind turbines—A review

February 19, 2013,   by Paul Gipe

“For all wind turbines, other than those used for more decorative purposes, the cost of energy is important.”[more]

Category: Small Vertical Axis Wind Turbines, News on Large Wind

Sandia's Retrospective of VAWT Technology—A Review

February 8, 2013,   by Paul Gipe

This review was a case of cleaning my desktop and before electronically filing away Sandia's year-old report on its work with Vertical Axis Wind Turbines (VAWTs), I'd decided to thumb through it and...[more]

Category: Small Vertical Axis Wind Turbines, News on Large Wind

Vertical Axis Wind Turbine Revival?

February 8, 2013,   by Paul Gipe

Since Wind Energy Basics was first published in 1999, there has been an explosion of interest in new vertical-axis wind turbines. In that edition, the conclusion illustrating one photograph was...[more]

Category: Small Vertical Axis Wind Turbines

FloWind: The World’s Most Successful VAWT (Vertical Axis Wind Turbine)

February 7, 2013,   by Paul Gipe

Note: The following is an excerpt from my 2009 book Wind Energy Basics Revised: A Guide to Home- and Community-scale Wind Energy Systems. I am reprinting it here because of the constant...[more]

Category: Small Vertical Axis Wind Turbines, News on Large Wind

Some Vertical Axis Wind Turbine (VAWT) Resources on the Web

February 7, 2013,   by Paul Gipe

In preparing for a review of a Sandia report on its decades-long research on Vertical Axis Wind Turbines (VAWTs), especially the Darrieus or eggbeater design, I thought it might be wise to first see...[more]

Category: Small Vertical Axis Wind Turbines, News on Large Wind

Scientific American: The Quest for Vertical Axis Wind Turbines Despite Failures

January 29, 2013,   by Robynne Boyd

The quest to slay the faulty dragon of conventional, or horizontal axis, wind turbines (HAWTS) has been an impossible one, thus far. The domination of conventional wind comes from their reliability,...

Category: Small Vertical Axis Wind Turbines

Italian Small Wind Growing with Feed-in Tariffs

November 21, 2012,   by Paul Gipe

The installation of small wind turbines is growing rapidly in Italy since the introduction of feed-in tariffs, according to a report by the Department of Engineering at Milan's Polytechnical...[more]

Category: News on Small Wind, Italy FIT

Build Your Own Small Wind Power System--A review

November 14, 2012,  

Build Your Own Small Wind Power System was written by a small wind systems dealer, Kevin Shea, and a professional journalist, Brian Howard. Be forewarned, this is a big book. It's a modern book. It...[more]

Category: book Reviews, Small Wind folder

Paul Gipe Interview with Small Wind Newsletter

October 5, 2012,   by Paul Gipe

Small Wind Newsletter: I was struck, while reading your biography, that you started out in this field at around the same time that many other renewable energy leaders (including Larry Sherwood,...[more]

Category: News on Small Wind

Fox: Some Nevada Mariah Windspire users say returns lacking

September 27, 2012,  

Mariah Power, the company that produced the Sousas' wind turbines, generated headlines several years ago as an example of a successful northern Nevada company making headway in the renewable energy...

Category: Small Vertical Axis Wind Turbines, Mariah Windspire

Earth Techling: Why ‘Breakthrough’ Wind Turbines Are Usually Bunk

September 5, 2012,  

This is the history of wind turbine design breakthroughs. Paul Gipe, a prolific and respected writer on wind power, has seen a million of them. I asked him his view of the Catching Wind Power...

Category: Small Wind folder

DWEA: Requesting Wind Turbine Qualification Criteria for On-Site Renewable Energy Scoring

August 20, 2012,   by Mike Bergey

DWEA believes the current lack of turbine certification and siting criteria under the various LEED rating systems is hurting the distributed wind industry and is counter-productive to the intent of...

Category: Small Wind folder, LEED LEED

Britain Powered by FITs Surpasses US in 2011 Small Wind Capacity

July 26, 2012,   by Paul Gipe

Expected to do the Same in 2012 New Feed-in Tariffs for 2013   The 2010 launch of Britain's feed-in tariff program has pushed the country ahead of the US in the installation of small wind turbine...[more]

Category: Great Britain, Small Wind folder, Feed-in Tariffs for Small Wind

WWEA 2012 Small Wind World Report--A Review

July 25, 2012,   by Paul Gipe

I was just going to pick up the World Wind Energy Association's 2012 Small Wind World Report and extract a few useful numbers to keep myself abreast of the small turbine industry. But once I began...[more]

Category: Small Wind folder, book Reviews

2012 Catalogue of Small Wind Turbines--A Review

May 28, 2012,   by Paul Gipe

The Folkecenter for Renewable Energy (FC) has again published a handy report cataloging small wind turbines available worldwide. The FC's 2012 Catalogue of Small Wind Turbines is the one neutral...[more]

Category: Small Wind folder, book Reviews

Reno Nevada Proves--Again--that "Small Urban Wind" Produces Poor Results

May 22, 2012,   by Paul Gipe

Reno, Nevada is vying for the world record for "Worst Turbine Install in History" through sheer scale, expense, and hubris. . . [more]

Category: Rooftop & Urban Wind, Small Wind folder, Worst Turbine Install in History, Mariah Windspire

Boston Museum of Science Wind Turbine Lab: Two-Year Report on Rooftop Wind Turbines

February 29, 2012,   by Marian Tomusiak

The most sophisticated and comprehensive study of small rooftop wind turbines in the Americas concludes rooftop wind turbines are "Not cost-effective at this site". . .

Category: Small Turbine Testing, Rooftop & Urban Wind

Paul Gipe Presentation on ZNE-SCE-Wind 01 Intro.pdf

November 16, 2011,   by Paul Gipe

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

Category: News on Small Wind, Presentations by Paul Gipe

Paul Gipe Presentation on ZNE-SCE-Wind 02 Sizing

November 16, 2011,   by Paul Gipe

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

Category: News on Small Wind, Presentations by Paul Gipe

DyoCore and Why the Rating of Small Turbines Remains a Black Art

September 23, 2011,   by Paul Gipe

Despite my best efforts, I've been dragged into the DyoCore flap here in California. I successfully ignored Mick Sagrillo's plea to write something. I successfully ignored DyoCore's request to get...[more]

Category: Rooftop & Urban Wind, Small Turbine Product Reviews

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

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

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

Community Colleges Offering Wind Courses in North America

June 23, 2011,   by Paul Gipe

August 13, 2009; Updated 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...[more]

Category: News on Small Wind

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

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

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

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

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

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

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

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

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

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

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

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

Small Wind Turbines Monitored at Wulf Test Field

December 6, 2009,   by Paul Gipe

  [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

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

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

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

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

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: Small Turbine Testing

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 Vortec

Warwick [Small] Wind Trials

July 17, 2009,  

Performance monitoring of rooftop wind turbines in Great Britain

Category: Small Turbine Testing

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Swift Turbine Specs Look Dubious by Stewart Russell

May 9, 2005,   by Stewart Russell

Category: Small Turbine Product Reviews, Rooftop & Urban Wind

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

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

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

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

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

Air 403 Noise Measurements

November 4, 2003,   by Paul Gipe

Air 403 Ambient Noise.   Air 403 Noise. Linear regression trend and data for Air 403 charging a constant load. NREL's Arlinda Huskey notes that the data suggests turbine noise begins to level off...[more]

Category: Wulf Small Wind Turbine Test Field Results

Ampair 100 Noise Measurements

November 4, 2003,   by Paul Gipe

Ampair 100 Noise Ambient.     Ampair 100 Noise Charging.   Ampair 100 Noise Unloaded.   Ampair 100 Noise Summary. [more]

Category: Wulf Small Wind Turbine Test Field Results

Summary of Ambient Noise Measurements

November 4, 2003,   by Paul Gipe

    There was generally good agreement with the measurement of ambient conditions for the three seperate tests. Note that the ambient for the Ampair and Air 403 tests was higher than that for the...[more]

Category: Wulf Small Wind Turbine Test Field Results

BWC 850 Noise

September 28, 2003,   by Paul Gipe

BWC 850 Ambient Noise. Linear regression trend and data from one-minute Leq with the turbine parked. Copyright 2001 by Paul Gipe. All rights reserved.[more]

Category: Wulf Small Wind Turbine Test Field Results

Brazilian Tests Confirm Air 403 Underperforms Power Curve

May 23, 2003,   by Paul Gipe

Gustavo de Marsillac Peña presented the findings from a series of laboratory tests on an Air 403 at the American Wind Energy Association's annual conference this week in Austin, Texas.[more]

Category: Small Turbine Testing

AirX Noise Emission Measurements

January 30, 2003,   by Paul Gipe

Both versions of the AirX monitored at the Wulf Test were qualitatively and quantitatively quieter than the Air 403.[more]

Category: Wulf Small Wind Turbine Test Field Results

AirX Fails Power Curve Tests

January 29, 2003,   by Paul Gipe

Tests during 2002 at the Wulf Test Field demonstrate that the AirX fails to meet the manufacturer's power curve by a wide margin.[more]

Category: Wulf Small Wind Turbine Test Field Results

Kleinwindkraftanlagen und ihre Anwendungen

January 1, 2003,   by Paul Gipe

Category: Book Reviews of Books auf Deutsch, News on Small Wind

Wind-Wasserpumpen – ein Überblick

January 1, 2003,  

Category: Book Reviews of Books auf Deutsch, News on Small Wind

More on Small Turbines

January 1, 2003,   by Paul Gipe

Links to more information on small wind turbines.[more]

Category: News on Small Wind

EcoQuest International, WindTree, and AWEA Cease & Desist Order

January 1, 2002,  

False, Misleading and Deceptive Claims Regarding AWEA's Purported Endorsement of WindTree Energy Generator[more]

Category: Small Vertical Axis Wind Turbines

Real Goods' Solar Living Sourcebook 11th Edition

September 24, 2001,   by Paul Gipe

When the 11th edition of Real Goods' Solar Living Sourcebook landed with a thud on my doorstep, I knew I was in for a treat. L[more]

Category: book Reviews, News on Small Wind

Chicago Offshore Wind Negates Crackpot Invention

August 28, 2001,   by Paul Gipe

An edited version of the following was read on National Public Radio's Weekend Sunday program. Weekend Edition Sunday Re: Robbie Harris (sp)'s report on Wind Energy for Chicago/Sunday 26 August,...[more]

Category: Small Vertical Axis Wind Turbines, News on Large Wind

Noise from Small Wind Turbines: An Unaddressed Issue

June 6, 2001,   by Paul Gipe

While it's difficult and time consuming, author Paul Gipe finds that measuring small wind turbine noise is within the reach of amateurs and asks why manufacturers and national laboratories are not...[more]

Category: Small Turbine Testing

Small Wind Turbines Sprouting as Power Prices Rise

January 1, 2001,   by Paul Gipe

California's power crisis has proven fertile soil for a new crop of small wind turbines seen sprouting across the state. From Chico in the north to Temecula in the south, from the coast near San Luis...[more]

Category: News on Small Wind

Ventilators and Squirrels in a Cage

January 1, 2001,   by Paul Gipe

Like ducted turbines, a perennial favorite of hucksters and charlatans is, for lack of a better word, squirrel cage rotors. [more]

Category: Small Vertical Axis Wind Turbines

Spanish Survey of Small Turbine Technology A review by Paul Gipe

October 30, 2000,   by Paul Gipe

Researchers at Spain's national energy center, CIEMAT, reported on a survey of small wind turbine technology at the European Wind Energy Association special topic conference in Kassel, Germany.[more]

Category: News on Small Wind, book Reviews

Testing the Power Curves of Small Wind Turbines

June 6, 2000,   by Paul Gipe

The following article grew out of research for an extensive revision of my book Wind Power for Home & Business published by Chelsea Green. The article is essentially a report on how to test small...[more]

Category: Small Turbine Testing

Comments on a Proposed Performance Standard for Small Wind Turbines

May 25, 2000,   by Paul Gipe

A Memorandum to Colleagues in the U.S. Small Turbine Industry on the Draft Performance Standard AWEA 1.2.2000[more]

Category: Small Turbine Testing

Brakedrum Windmill Plans Year 2000 Edition

January 1, 2000,   by Paul Gipe

Hugh Piggott's plans for turning a used brakedrum into a windmill is welcome addition to the literature on small wind turbines. [more]

Category: book Reviews, News on Small Wind

Air 303H and Air 403 Measured Power Curves

January 1, 2000,   by Paul Gipe

[more]

Category: Wulf Small Wind Turbine Test Field Results

Marlec 910F Measured Power Curve

January 1, 2000,   by Paul Gipe

[more]

Category: Wulf Small Wind Turbine Test Field Results

LVM 6F Measured Power Curve

January 1, 2000,   by Paul Gipe

  [more]

Category: Wulf Small Wind Turbine Test Field Results

Ampair 100 Measured Power Curve

January 1, 2000,   by Paul Gipe

  [more]

Category: Wulf Small Wind Turbine Test Field Results

Small Turbines Not Left Out of Wind Boom

January 1, 1999,   by Paul Gipe

Wind energy is booming. Not since the heyday of the American farm windmill has wind energy grown at such a dramatic pace. By the new millennium, more than 40,000 medium-size wind turbines will be in...[more]

Category: News on Small Wind

Get A Grip! Raising a Bergey 850 with a Griphoist

December 1, 1998,   by Paul Gipe

The most common technique here in the United States is to raise the tilt-up towers with a truck or tractor. I’ve never been a fan of this approach and I’ve long wondered if there is a better way....

Category: News on Small Wind

Lowering the BWC 850 with a Griphoist

June 22, 1998,   by Paul Gipe

My thanks to everyone on the awea-wind-home list for your help raising the BWC 850. Sunday 21 June, Nancy and I lowered the turbine with the griphoist. (Because we will be traveling for the next five...[more]

Category: News on Small Wind

BWC 850 Measured Power Curves

January 1, 1998,   by Paul Gipe

[more]

Category: Wulf Small Wind Turbine Test Field Results

The Need for an International Small Wind Turbine Test Center

September 24, 1997,   by Paul Gipe

There is a pressing need for an international center to test and demonstrate small wind turbines. In contrast to the medium-sized wind turbine industry, which is nearing technical maturity, small...[more]

Category: Small Turbine Testing

Windmill: Essays from Four Mile Ranch by David Romtvedt--A Review

January 1, 1997,  

Romtvedt struck a chord with me and I found myself reading this fine book through in one sitting. [more]

Category: book Reviews, News on Small Wind

Wind Power Workshop by Hugh Piggott

January 1, 1997,  

Finally, something to supplant Michael Hackleman's aging classic Wind and Windspinners. [more]

Category: book Reviews, News on Small Wind

Wulf Test Field Site Description

January 1, 1997,   by Paul Gipe

Since 1997 Paul Gipe and Nancy Nies have used the site to gain experience installing and operating small wind turbines, to measure small turbine performance and noise emissions, and to experiment...[more]

Category: Wulf Small Wind Turbine Test Field Results

Sandia: Final Project Report: Highenergy Rotor Development, Test and Evaluation

September 1, 1996,  

Conclusion of Sandia's design development contract for FloWind's EHD Vertical Axis Wind Turbine. . .

Category: Small Vertical Axis Wind Turbines

Inventus 5 kW Power Curve

January 1, 1991,  

The Inventus 5 kW power curve was measured by Windtest Kaiser-Wilhelm-Koog in Germany using 10-minute averages. Though the turbine is rated at 5 kW it produces 4.5 kW at 12 m/s using the 10-minute...[more]

Category: Small Turbine Testing

Wind Chargers: Building Tools from the Nation's Past by Paul Gipe and Carl Judy, 1983

February 1, 1983,   by Paul Gipe

Yes, it's a very old article that just resurfaced at Mother Earth News.

Category: News on Small Wind

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