Grid-tie inverters have become egalitarian today. You no longer need thousands of dollars or a licensed electrician to take advantage of the newest generation of micro grid-tie inverters. These devices let you hook your small wind turbine or solar panel to the grid for around $250-$350 US. In our latest Youtube Video, my colleague Paul Gelling puts one of these inverters through the wringer.

Click here to view the video: Youtube Video

Old Information can be Good Information


If you are interested in making wind turbine towers from schedule 40 or schedule 80 pipe and fittings, some very good information can be found using a very old source: a 1958 copy of Popular Science which I was reading from Google Books:

Brown, S. (1958), "Machined Pipe and Fittings", Popular Mechanics, May 1, pp.197-200.

Its amazing that you can find so many old magazines on Google Books which still have relevancy today. Even using a CNC machine rather than a lathe, many of the ideas in this article are still transferable. I am interested in making a telescoping wind turbine mount inexpensively and found the discussion on telescopic uses of pipe very interesting.

Equally amazing is how much material was in a monthly magazine back in the day. Go buy a Popular Mechanics today and compare it in quality and quantity to the 1958 vintage equivalent. I bought one in an airport and had finished everything of value before the plane reached altitude. Same goes for most other magazines like Popular Science that are but a shadow of their former selves. They mostly help you buy things now rather than make things.

55 Gallon Drum Turbine Instructable

I wrote an Instructable. I have been a fan of Faroun, a prolific VAWT inventor who has been writing Instructables for years, and now I have finally written my own instructable:

55 Gallon Drum Vertical Axis Wind Turbine (VAWT)

Please let me know what you think. It is a lot easier to read if you actually to to the Instructables site to view it.

New Airfoil-Based Wind Turbine




This is a preview of our new turbine. This turbine is still under development but is performing very well in initial tests.

This turbine is much lighter and faster than previous turbines I've built. For one, it is a lift based turbine utilizing symmetrical airfoils rather than a drag based turbine such as the Savonius. This has both advantages and disadvantages. This turbine really goes, but the Savonius starts up easier in super light winds.

I would like to thank the following companies who produced custom products or provided services which were integrated into this turbine prototype.

Liberty Machine and Tool - http://www.libertymachine.net/

SENSYR - http://sensyr.com

FC Sails - http://www.fcsails.com/

Thermal Foams, Inc. = http://www.thermalfoams.com/

Otherpower.com - http://otherpower.com

Here is a YouTube video of this prototype turbine.

Gear-Wheel Designer Vastly Improved

When I wanted to couple my prototype Savonius wind turbine to an off-the-shelf alternator, I decided to use gears. I cut the gears on my IMService CNC machine using an inexpensive piece of software from Delph Electronics called the Gear-Wheel Designer

Graham Baxter's Gear-Wheel Designer with G-code generator lets you type in a few parameters, press a button, and get a DXF file of a gear, along with G-code to run a CNC machine. This program allowed me to make gears to electrify my wind turbine without being an expert on gear cutting. Click here to see a video of the wind turbine in action.

The user interface of the Gear-Wheel Designer is quite simple and contains a parameter area and a graphical preview of the gear to be rendered:

Here is a picture of a gear produced from the software.

The latest release has the ability to create five gear types as opposed to just cycloidal and involute gears in the previous release. The new release added the capability to design ratchet wheels, dead-beat ratchet wheels and anchor ratchet wheels. See this page for more detail on the new gear/wheel types. Also added was the ability to create wheels with spokes as shown above. There are also a number of other new features as this release was a complete rewrite of the software. They let you download the user manual prior to purchase so I advise doing this to find out more details about the software prior to purchase. This software does not attempt to teach you terminology or gear design concepts so if you are like me and don't know much about gears, you should do some research prior to machining your gears.

This software is definitely a bargain at less than $80 to purchase. I just upgraded to the latest version and will be trying it out on my next generation vertical wind turbine. I am also going to try my hand at machining a pendulum clock. Watch this blog for future updates if interested in gears.

VAWT Video Part 2 - Power Generation.


VAWT Part 2 -- Gears and Generator


Please check out the following link to a YouTube Video of part two of our wind turbine build. Video - Part 2 This shows our geared generator design and a desktop CNC machine cutting gears.

Two other designs are being worked on for future:

1. Geared design shown in this video.

2. A version with a built in rotating cylinder of permanent magnets exciting a stationary coil (permanent magnet alternator) with no mechanical gearing and hence no mechanical loss as is inherent with gears.

3. Another type with a geared automotive generator (no magnets at all) whose mechanical resistance is controlled with PWM(Pulse Width Modulation) by a microcontroller controlling power into the rotating coil. With no power, the coil should free-wheel with minimal resistance. In strong winds, we could "make hay while the sun shines" by putting a lot of juice into the coil. In light winds, the power in the coils is reduced to an amount which still will at least hopefully trickle charge the battery. A small permanent magnet motor-generator would be used to jump start the process and handle the case of a totally dead battery, and could "trickle charge" a dead battery. This design is very interesting from a software point of view, but has the highest amount of technical risk.

The wind speed, RPM, and outputs will be monitored, and more importantly compared, with a flexible sensing and visual programming environment called NeatTools, which will be discussed and "filmed" in future posts. We will also be using a TNG-3B from http://www.sensyr.com in conjunction with NeatTools to simultaneously monitor multiple inputs from hall effect sensors (from a small magnet on each turbine axle), voltage sensors, and a wind speed sensor.

CNC part 1-Unboxing and Connecting


I received a CNC machine last month and opened it up. Here is video of the initial checkout of the machine.


http://www.youtube.com/watch?v=duunwn_yfW8

Since this was posted I have used the machine for many other projects including making gears for my wind turbine and machining plastic front panels for local companies.


I did a lot of research before buying this machine from IMService ( http://www.imsrv.com/ ) and I think I made a good decision as it is making us more productive. The owner of the company, Fred Smith, provides excellent support. Here is a link to the actual 12 x 24 inch machine I bought:

http://www.cadcamcadcam.com/index.asp?PageAction=VIEWPROD&ProdID=208


Soon I am going to try to make printed circuits on the machine using special micro end mills.

Here is the YouTube Video of the unboxing: YouTube Video

Wind Power, CNC, and More

Welcome to my blog. Here I will keep you abreast of new developments at the Berezin house. Currently, we are developing an inexpensive "build it yourself" VAWT (vertical axis wind turbine). After checking locally for a wind turbine and finding entry level prices in the $3,000 to $5,000 range, I decided to build a plastic barrel VAWT. Last week we bought a CNC machine to fabricate parts for our VAWT. I will be publishing videos of our progress on these projects.

Evergreen Institute Releases 2010 Class Schedule

Check out these renewable-energy courses to see if there's an Evergreen class for you.

11/16/2009 -- Environmentalists alarmed by Puerto Rico policies

Environmentalists say Puerto Rico governor rolling back environmental protection

Green Energy Breakthroughs

When you start reading about technology, it seems as though every day there's a revolutionary new breakthrough related to renewable energy. From superwindows to solar panels to the smart grid, there's a world of promising new technology being developed that will help us produce more renewable energy and consume fewer fossil fuels. Here's a rundown of five developments we think will make a difference in the next few years.

Renewable Energy in REAL School Gardens

Rainwater Environmental Alliance for Learning (REAL) School Gardens, with the help of a grant from the Motorola Foundation's Generation Innovation program, works to teach kids about gardening and power from the sun and wind.

Solar Decathlon 2009 Update: Team Germany Wins Again

Team Germany takes first place in the 2009 Solar Decathlon, followed by the University of Illinois at Urbana-Champaign in second and Team California in third.

Solar Decathlon 2009 Update: The Little House from a Big Town

Rice University's ZEROW HOUSE takes first place for hot water and second for architecture and market viability at the Solar Decathlon 2009 in D.C.

More Advice for Landing a Job in Renewable Energy

When you're looking for a job, there's just no substitute for getting out and meeting the professionals in the industry.

California Commits to Renewable Energy

The Golden State invests $3.1 billion in energy efficiency - the largest such investment ever made by a state - and will require state utilities to get a third of their electricity from renewable energy sources by 2020.

Do You Use CFLs at Home?

Tell us what you think! We'd like to know whether you're using compact-fluorescent light bulbs at home and why or why not. 

World's largest wave energy device switched on near Orkney

THE world's largest hydro-electric wave energy device was switched on to the national grid today.

Tiny Iowa town has the chargers, awaiting drivers

Hoping to see the USA in your Chevrolet Volt or Nissan Leaf? The tiny Iowa town of Elk Horn will have plenty of electric charging stations and no wait - if you can get there.

Harnessing the wind

There are incentives out there, but to utilize wind power, it will cost you thousands of dollars, at least up front.But if you wait out the investment, homeowners like Gail and Dan Dulgar of Seneca County say you'll get paid back.In April the Dulgars installed a wind turbine in their back yard.

CIC takes 20 per cent stake in GCL-Poly Energy for $710 million

China Investment Corporation , the country's $300 billion sovereign wealth fund, has acquired a 20 per cent stake in a Hong Kong-based new energy company GCL-Poly Energy Holdings Ltd for $710 million.

Study to focus on retraining for clean energy jobs

WASHINGTON -- The Department of Labor is providing $4 million for a study of displaced autoworkers in hopes of identifying opportunities to retrain them for work in alternative energy fields.

PSC approves Garrett County wind farm despite objections

The Maryland Public Service Commission has approved an application to build a 50-megawatt wind energy farm atop Backbone Mountain near Oakland in Garrett County .

Select Group Of NC Companies Receive Green To Go Green

Gov. Bev Perdue says 18 small North Carolina companies will receive federal stimulus grants to spur development in green technology.

Governor seeks review of whether energy tax credits are necessary

Gov. Ted Kulongoski has asked two state agency leaderds to quickly review whether Oregon's increasingly expensive incentives for renewable energy companies are necessary, especially for wind energy.

Report Highlights Solar Power Potential In NC

An environmental group says North Carolina's future with solar energy can be bright.

Transformer maker to open first US site in Colo.

WHEAT RIDGE, Colo. - A company that makes transformers that convert electricity from renewable energy sources to the grid plans to open its first U.S. plant in Wheat Ridge in January.

a-Power, Us Reg To Build Us Wind Turbine Factory

Chinese wind-turbine maker A-Power Energy Generation Systems, Ltd. and the U.S. Renewable Energy Group have signed a cooperation agreement for the development and construction of a new production and assembly plant in the United States.

Glimpsing a greener future: Computer model foresees effects of alternative transportation fuels

Look into Shane Stephens-Romero's crystal ball -- a computer model called STREET -- and find that air quality has significantly improved.

Wind Farm to Be Dedicated in Northern Indiana

A wind farm capable of generating enough power to light 60,000 average homes will be dedicated this week in northwestern Indiana.

Alternative fuel 'can power 15% of flights by 2020'

An Airbus A-380 flies past a mosque during an aerobatics performance on the first day of the Dubai Airshow on November 15.

Largest Offshore Wind Farm in New England Cranks Up

The largest community-owned wind facility on the East Coast and the largest off-shore wind farm in New England is now open for business.

Kelly Says Xcel to Boost Spending for Renewable Energy: Video

Nov. 17 -- Richard Kelly, chief executive officer of Xcel Energy Inc., talks with Bloomberg's Lindsey Arent about the company's plan to add $1 billion a year in spending for renewable energy.

China, U.S. announce plan to work together on clean energy

President Barack Obama and President Hu Jintao agreed Tuesday that U.S. and Chinese scientists and engineers will work together to speed the widespread use of electric cars, buildings that need far less energy and coal-fired power plants that don't pump out gases that cause global warming.

Alexander finds partner in push for more nuclear power

Republican Sen. Lamar Alexander has found a Democratic partner in his campaign to grow the country's nuclear power capacity.

Copenhagen deal to help boost climate fund flows

Agreement in Copenhagen next month on a new pact to fight climate change will encourage long-term investors to move into firms better placed to cope with a likely and eventual rise in the cost of carbon emissions.

introThe FAWT Silo. ( vawt wind turbine hawt savonius )The FAWT Silo is one of my ideas to improve the efficiency of VAWT.we know that the best VAWT can only be 45% vs The HAWT in efficiency.well The FAWT is a VAWT but it uses lift like the HAWT to create the rotation spin.the idea is simple, I took...
By: faroun

55 Gallon Drum Vertical Axis Wind Turbine (VAWT)

This Instructable will enable you to build a Vertical Axis Wind Turbine out of mostly recycled materials.I was inspired to build a Savonius turbine from 55 gallon drums after reading an article from a 1970s copy of Mother Earth News. The Savonius Turbine, often referred to as the S-Rotor, has been ...
By: embeddedprogrammer

A Paper Plate and Pop Bottle Savonius Wind Turbine

Build a vertical axis windmill from cardboard and recycled pop bottles to experiment with wind power generation.Small wind turbines have lower energy output than commercial wind turbines, such as those found in wind farms. Commercial generators in the 5-50W range are available for boat or caravan us...
By: egbertfitzwilly

How to build a car powered by a savonius/wind turbine

Hello! I have seen an interesting experimental car on German TV. It is a small car, in which a wind driven helix directly trasmits the mechanic energy to the wheels. The car moves, even against wind direction. That car was equipped with a tall helix perpendicular to the main axis. I think that a s...
By: isacco

How to test the power output on a wind turbine?

I'm on a team prototyping a water filtration system powered by a Savonius wind turbine; the energy from the spinning turbine is mechanically transferred to a reverse osmosis filter/pump setup. We're doing tests of various blade configurations and are trying to determine the power output by hooking ...
By: moisture

V8-4" vawt,savonius,vertical axis,wind turbine,ametek)

http://www.vawt.tk Guys Don't Get sick Of me, But After making the V8-3" I realized that the Vanes are not able to hold onto all the wind that comes near it, that was due to when i expanded the middel section it flattened the vanes in the middel, so i designed the V8-4" in a way that when i expand i...
By: faroun

V8 vawt,savonius,vertical axis,windturbine,ametek)

http://www.vawt.tk After making the V10 I realized that off the shelf, cheap dc Motor requires alot of RPM, I do not want to gear something made of so light material that it does not have the mass to sustain the rotation, so I decided to design and build one that has more RPM yet has the same Blade ...
By: faroun

V10 (vawt,savonius,vertical axis,windturbine,ametek)

http://www.vawt.tk Here we go again, building another vawt.With this one I am hoping to get the 100 watts.Here is how I did it.First we need:--5 pvc tube. size 3"X10' (hardware store)$48--3 bike wheels. size 12" (junk yard or ask your kid to use their bikes for a minute) maybe $5--Ametek38 volt (eba...
By: faroun

Build your own Savonius VAWT (Vertical Axis Wind Turbine)

Build a cheap VAWT from a broomstick, 4 bearings, 2 buckets and some pipe. Get some 25mm ID / 50mm OD bearings Go get at least 2, or ideally 4 ball bearings with a 25mm (1inch) inner diameter, and a 50mm (2 inch) outer diameter. I bought mine for aout 6 Australian Dollars each at my local bearing...
By: sam dekok

Faroun Lenz v2 Vertical Axis Wind Turbine

http://www.vawt.tk keep in mind that this one is easier to build than my Savonius.i kept it very basic.to build the turbine, you need the following material:-3 bicycle 29" wheels $5.00-12 lamminate flooring $20.00 ( .25"x8"x4'.4") -Various sizes of screws $7.00-3" PVC cut in 2 $50.00 or (cardboard ...
By: faroun

Wind Powered Yard Light

I live in a pretty windy area and decided this might be a fun little project to throw together. It's pretty simple to do, and could easily be improved to make it more permanent and efficient. It would also make a good school project if you have appropriately aged school children. Prepare the old...
By: yokozuna

Soup Can Savonius

Here?s my first venture into writing an instructable. I?m not creating much new here, just giving people a cheap first step into making Savonius styled wind turbines and trying out some new ideas. Most of the materials can be found right in your own garage if yours is as filled with junk like mine...
By: gumbytig

Cardboard Savonius Wind Turbine

Goal: build a Savonius wind turbine made out of cardboard to see whatworks. This is for the turbine only and not the generator itself. The main photo you see is the goal.The need for a working model grew out of frustration trying tojury-rig various designs of a Savonius turbine that in the end wou...
By: rhackenb

image001.png


By: winspnr

Faroun Savonius Wind Turbine

http://www.vawt.tk Alternative energy is a must in the future and all of us would like to challange the idea that we can not change and be efficeint.so i am taking that chllange to create my own style of Savonius wind generator.in this Instructable i will include the steps that will achieve my Farou...
By: faroun

C:\Documents and Settings\Owner\Local Settings\Temp\Word\Savonius Wing Rotor.htm


By: winspnr

A perfect way of storing electricity generated by wind turbines has been elusive so far. Ideas like super-sized batteries, compressed air and hydroelectric storage have all been floated. One company though thinks the answer could be as simple as making ice.

Calmac has come up with a storage system called IceBank that uses the energy generated at off-peak night-time hours to make ice. That stored ice is then used for cooling purposes during high-demand daytime hours. The company claims that reducing electricity demand for cooling can cut energy costs by 20 - 40 percent. That reduction also means fewer emissions from power plants.

This a great solution for harnessing wind power that might otherwise go to waste during night-time hours. And it's pretty low-tech - no need for lithium or rare earth minerals - just a souped up ice maker.

via Treehugger

U.S. Military Wary About Offshore Wind Power Off Coast of Maryland

Photo: Wikipedia, CC Maryland Offshore Wind DevelopmentMartin O'Malley, the governor of Maryland, would like to see offshore wind power developed off the cost of his state, but the U.S. military has expressed fears that the turbines could "disrupt flight and weapon test ranges, as well as erroneously appear on radar as unidentifiable aircraft." Three military bases in the region are using that area in the Atlantic for training missions and flight tests....Read the full story on TreeHugger

Eco-Beat, 11/17

Does Reese Witherspoon need a recycling coach? Are you practicing some "pre-holiday mindfullness" by going zero-impact this week? Are wind turbines silent but deadly? Today's Eco-Beat has the scoop on all the latest green news and tips.

Reese Witherspoon Needs an Intervention You'd think that most Hollywood stars have heard of recycling by now (or could at least afford a trash can that meets their garbage needs), but apparently not. On the "Tonight Show," Reese admitted to sneaking her excess trash out at night and putting it in the neighbors' can.

No Impact Week Starts Sunday The NRDC is sponsoring the second ever No Impact Week -- inspired by "No Impact Man" Colin Beavan, of course. If you're itching to participate, noimpactproject.org has a little how-to guide for no-impact novices. Sign up here.

Win a Free Trip to Hopenhagen Ready to take your journalistic aspirations to the next level ... and win a free trip to the Copenhagen? Thought so. The Huffington Post and Hopenhagen.org are sending one citizen journalist to cover the UN climate talks for Huffpo. Sign the petition to enter.

Should I Turn My Computer Off, or Hibernate? For years, IT guys have argued that powering your computer up each morning and down each night results in extra wear and tear -- shortening the lifespan of your beloved compy and erasing the energy gains. The DOE says it's no longer true.

Is Wind Turbine Syndrome for Real? After interviewing 10 families from all over the world who live next door to wind farms, Dr. Nina Pierpont is convinced that Wind Turbine Syndrome deserves some serious research before any more turbines are built near homes or schools.

Green in a Flash:

• Coca-Cola now comes in plant-based plastic bottles.
• William Lind gives the conservative argument for public transit.
• Developers in NYC are about to open the city's first ever non-smoking apartment building.

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Wind Turbines to Power Cell Phone Towers

Small-scale wind turbines can't produce the large amounts of power that their giant brothers can, but there's still room for them in the renewable energy landscape. As an example, cell phone company Core Communications will begin using small vertical-axis wind turbines to power their cell phone towers.

The company will use turbines from Helix Wind that can generate electricity in winds as slow as 10 mph. The turbines will power the towers and any extra electricity will be sold to the grid, giving Core Communications a new source of revenue as well.

The turbines will be installed on a trial basis on cell phone towers in Southern California for three months starting in early 2010. If they perform well enough, additional turbines could be rolled out permanently.

via CNET

New 18V PowerLuber Grease Gun from Lincoln Lube

A new addition to the cordless Lincoln PowerLuber line is the 18V Grease Gun 1844. Currently the 14.4V and 12V PowerLubers are considered the top guns on the market and starting under $200, very reasonably priced. The new 18V will also use the current 14.4V chargers which could be a very nice feature for those that use multiple grease guns. Here is a quick comparison of the 3 cordless models:

PowerLuber 12 Volt – 1244 ($199)
- (2) 1201 Batteries
- Single Speed – High Pressure (2.9 oz/min)
- 6,000 PSI
- 3-5 Tubes per Battery

PowerLuber 14.4 Volt – 1444 ($248)
- (2) 1401 Batteries
- 2 Speed – High Pressure (3 oz/min) High Volume (8.5 oz/min)
- 7,500 PSI
- 5-7 Tubes per Battery

PowerLuber 18 Volt – 1844 ($267)
- (2) 1801 Batteries
- 2 Speed – High Pressure (3 oz/min) High Volume (9 oz/min)
- 7,500 PSI
- 8-10 Tubes per Battery

When looking at the stats it’s clear the 18V is similar to the already very popular 14.4V model but does improve the work time for each battery 30-60%. Which gun is right for you will depend on your specific application. The PowerLubers are used in a wide range of industries including automotive, farm equipment, heavy construction equipment, factory machinery, wind turbines, general maintenance & much more. It is recommended to use the Lincoln Lube Guardian Grease Tubes ($1.99) with the PowerLuber guns but there are many other brands and specialty grease that could work as well.

Wind Turbine in Wakasu Marine Park

Savonius wind turbine in front of UDX, Akihabara

Savonius Wind Turbine

SAVONIUS WIND TURBINE

Savonius Wind Turbine

Savonius Wind Turbine

Savonius Wind Turbine

Savonius Wind Turbine

Savonius Wind Turbine

Savonius Wind Turbine

Savonius Wind Turbine

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Wind turbine / Generator Blades, and center Hub

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20pc N42 2x1x.5 Neo Magnet Wind Generator Turbine Power

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Wind Turbine Hybrid Wind Generator 5-Blade 650W Max 12V

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5 WIND TURBINE GENERATOR BLADES - 17 MM HUB VERSION

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10w Mini Vertical Axis Wind Turbine V.A.W.T.

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12 pcs N42 2x1x1/2 Neodymium Wind Turbine Motor Magnets

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US $1,299.00 End Date: Saturday Nov-21-2009 14:00:40 PST Buy It Now for only: US $1,299.00 Buy it now | Add to watch list

Powerful 1200W Max Wind Turbine Generator 24V Hybrid

US $1,049.00 End Date: Saturday Nov-21-2009 15:00:47 PST Buy It Now for only: US $1,049.00 Buy it now | Add to watch list

Powerful 2kW Wind Turbine Generator 2000 Watt 48 Volt

US $1,299.00 End Date: Saturday Nov-21-2009 15:00:55 PST Buy It Now for only: US $1,299.00 Buy it now | Add to watch list

PowerMax+400 Watt 12 Volt Hybrid Wind Turbine Generator

US $448.00 End Date: Saturday Nov-21-2009 15:10:02 PST Buy It Now for only: US $448.00 Buy it now | Add to watch list

AIR WAVE 400 WATT WIND GENERATOR TURBINE

US $157.50 (17 Bids) End Date: Saturday Nov-21-2009 15:28:19 PST Bid now | Add to watch list

1200W Max. Wind Turbine Hybrid Generator 24V Hi Output

US $999.00 End Date: Saturday Nov-21-2009 16:00:01 PST Buy It Now for only: US $999.00 Buy it now | Add to watch list

NEW 3500W Solar and wind turbine generator

US $3,638.00 End Date: Saturday Nov-21-2009 16:11:00 PST Buy It Now for only: US $3,638.00 Buy it now | Add to watch list

Solar and Wind Turbine-Generator Charge Control 25 Amp

US $118.99 End Date: Saturday Nov-21-2009 16:17:15 PST Buy It Now for only: US $118.99 Buy it now | Add to watch list

WIND GENERATOR TURBINE PERMANENT MAGNET ALTERNATOR PMA

US $212.50 (22 Bids) End Date: Saturday Nov-21-2009 16:46:23 PST Bid now | Add to watch list

High Output 1200W Max Wind Turbine Generator 24V Hybrid

US $995.00 (0 Bid) End Date: Saturday Nov-21-2009 17:00:17 PST Bid now | Add to watch list

PowerMax+400 12V Hybrid Wind & Solar Turbine Generator

US $448.00 End Date: Saturday Nov-21-2009 17:00:31 PST Buy It Now for only: US $448.00 Buy it now | Add to watch list

Wind Generator Turbine 500 Watts 500w Battery Charging

US $305.00 (5 Bids) End Date: Saturday Nov-21-2009 17:45:20 PST Buy It Now for only: US $575.00 Bid now | Buy it now | Add to watch list

600w solar panel/wind turbine GRID TIE INVERTER 20v-55v

US $112.88 (4 Bids) End Date: Saturday Nov-21-2009 19:00:13 PST Bid now | Add to watch list

25 2x1x0.5" Neodymium Magnets Wind Turbine Epoxy/Hole

US $99.99 End Date: Saturday Nov-21-2009 19:00:21 PST Buy It Now for only: US $99.99 Buy it now | Add to watch list

Powerful 3.5KW Max Wind Turbine Generator Hybrid 48V

US $4,199.00 End Date: Saturday Nov-21-2009 19:00:51 PST Buy It Now for only: US $4,199.00 Buy it now | Add to watch list

NEW Wind Turbine Operation in Electric Power Systems...

US $159.00 End Date: Saturday Nov-21-2009 19:05:24 PST Buy It Now for only: US $159.00 Buy it now | Add to watch list

Wind Generator turbine Kit 1500 Watt 12 VDC 110 Amp

US $229.95 (0 Bid) End Date: Saturday Nov-21-2009 19:51:29 PST Bid now | Add to watch list

COIL of Wind Turbine PMA Permanent Alternator Generator

US $31.00 (4 Bids) End Date: Saturday Nov-21-2009 20:00:22 PST Bid now | Add to watch list

650W Max Wind Generator Hybrid Wind Turbine 5-Blade 12V

US $529.00 End Date: Saturday Nov-21-2009 20:00:32 PST Buy It Now for only: US $529.00 Buy it now | Add to watch list

24PC 2X1X0.5" Wind Turbine Generator Neodymium Magnets

US $79.99 End Date: Saturday Nov-21-2009 20:00:40 PST Buy It Now for only: US $79.99 Buy it now | Add to watch list

12PC N50 2X1X.5 Neo Magnet Wind Generator Power Turbine

US $89.00 End Date: Saturday Nov-21-2009 20:00:57 PST Buy It Now for only: US $89.00 Buy it now | Add to watch list

Wind Generator turbine 1500 Watt 12 VDC 110 Amp Motor

US $169.95 (0 Bid) End Date: Saturday Nov-21-2009 20:11:49 PST Bid now | Add to watch list

Wind Generator turbine Kit 1500 Watt 12 VDC 110 Amp

US $229.95 (0 Bid) End Date: Saturday Nov-21-2009 20:14:07 PST Bid now | Add to watch list

Wind Turbine Generator 600W Max 12v Generators Turbines

US $428.00 End Date: Saturday Nov-21-2009 21:00:39 PST Buy It Now for only: US $428.00 Buy it now | Add to watch list

PowerMax+600 600W / 900W Hybrid Wind Turbine Generator

US $738.00 End Date: Saturday Nov-21-2009 21:00:55 PST Buy It Now for only: US $738.00 Buy it now | Add to watch list

24pc N50 2x1x.5 Neo Magnet Wind Generator Power Turbine

US $175.00 End Date: Saturday Nov-21-2009 22:00:46 PST Buy It Now for only: US $175.00 Buy it now | Add to watch list

BREEZE LOW WIND 12, 24 & 48 VOLT TURBINE GENERATOR 500W

US $161.50 (8 Bids) End Date: Saturday Nov-21-2009 22:50:20 PST Bid now | Add to watch list

1000 WATT DIY DO IT YOURSELF WIND TURBINE KIT 53" BLADE

US $355.75 End Date: Sunday Nov-22-2009 1:05:19 PST Buy It Now for only: US $355.75 Buy it now | Add to watch list

1500 WATT DIY DO IT YOURSELF WIND TURBINE KIT 61" BLADE

US $388.53 End Date: Sunday Nov-22-2009 1:10:44 PST Buy It Now for only: US $388.53 Buy it now | Add to watch list

WIND GENERATOR pivot,,TURBINE( PMA style mount)!!

US $34.00 (1 Bid) End Date: Sunday Nov-22-2009 4:34:52 PST Bid now | Add to watch list

WIND GENERATOR/TURBINE/AMETEK MOUNT "WITH VANE!!

US $45.00 (0 Bid) End Date: Sunday Nov-22-2009 4:39:19 PST Bid now | Add to watch list

WIND GENERATOR/TURBINE MOUNT 4" ametek motor style nice

US $30.00 (0 Bid) End Date: Sunday Nov-22-2009 4:47:42 PST Bid now | Add to watch list

500W 24V Wind Turbine Hybrid Solar Wind Generator

US $399.00 End Date: Sunday Nov-22-2009 7:13:56 PST Buy It Now for only: US $399.00 Buy it now | Add to watch list

Lego City, Wind Turbine, 7747, Brand New

US $46.52 (2 Bids) End Date: Sunday Nov-22-2009 8:01:07 PST Bid now | Add to watch list

Shinn DC wind turbine generator new 130 volts 10.0 amp

US $74.50 End Date: Sunday Nov-22-2009 8:11:47 PST Buy It Now for only: US $74.50 Buy it now | Add to watch list

Shinn DC wind turbine generator new 130 volts 10.0 amp

US $46.00 (2 Bids) End Date: Sunday Nov-22-2009 8:19:43 PST Bid now | Add to watch list

Wind Turbine Charge Controller and Dump Load

US $139.00 (0 Bid) End Date: Sunday Nov-22-2009 8:39:55 PST Bid now | Add to watch list

Lego 4999 Vestas Wind Turbine-Limited-New In Box

US $317.00 (5 Bids) End Date: Sunday Nov-22-2009 9:52:25 PST Bid now | Add to watch list

PowerMax+3KW Genuine 3KW Wind Turbine Generator System

US $7,200.00 (0 Bid) End Date: Sunday Nov-22-2009 11:00:54 PST Bid now | Add to watch list

Aluminum Wind Turbine Generator Blades & Hub, 49" Dia.

US $69.99 End Date: Sunday Nov-22-2009 11:53:02 PST Buy It Now for only: US $69.99 Buy it now | Add to watch list

Wind Turbine Hybrid Wind Generator 5-Blade 650W Max 12V

US $529.00 End Date: Sunday Nov-22-2009 13:00:26 PST Buy It Now for only: US $529.00 Buy it now | Add to watch list

50pc N50 2x1x.5 Neo Magnet Wind Generator Power Turbine

US $340.00 End Date: Sunday Nov-22-2009 13:00:32 PST Buy It Now for only: US $340.00 Buy it now | Add to watch list

24 N50 2x1x1/2 Neo Magnet Wind Generator Power Turbine

US $175.00 End Date: Sunday Nov-22-2009 13:00:34 PST Buy It Now for only: US $175.00 Buy it now | Add to watch list

20pc N42 2x1x.5 Neo Magnet Wind Generator Turbine Power

US $59.99 End Date: Sunday Nov-22-2009 13:00:56 PST Buy It Now for only: US $59.99 Buy it now | Add to watch list