Top Five Micro Wind Turbines
4. Southwest Windpower Whisper 500
The Whisper 500 can produce enough energy to power a small to moderately sized home. Formerly the Whisper 175, the Whisper 500 was completely redesigned in 2004 to work in harsh, high wind environments.
The Whisper 500 is a two bladed fiberglass reinforced blade and incorporates a patented “angle governor,” designed for quiet operations in high winds. Side-furling overspeed protection turns alternator and blades out of high winds without cutting power output.
Cost: $7,095
Rated Capacity: 3kw
Startup Windpeed: 7.5mph
Rotor: 15 feet (4.6 m)
Interconnection: Utility connected or battery charging
Voltage Output: 24, 32, 48 VDC or 240 VAC
Estimated Energy Production: 1500 KWh/month @12.5mph
5. Bergey Excel
The Bergey Excel is designed for high reliability, low maintenance, and automatic operation in adverse weather conditions. It is available in two configurations: battery charging and grid-tied.
The Excel is a ruggedly built turbine that comes with a 5 year warranty. Connected to the grid, the BWC EXCEL can provide most of the electricity for an average total electric home at moderate wind sites. The all new GridTek 10 power processor (inverter) is the most advanced in the industry and it carries a full UL certification to the latest utility standards.
In a location with moderate winds, the Excel 10kw can provide enough electricity for the average home.
Cost: $21,900-$27,900
Rated Capacity: 10kw
Startup Windspeed:7.5 mph
Rotor: 22 feet (6.7 m)
Interconnection: Utility connected or battery charging
Voltage Output: 48 VDC or 120, 240 VAC
Estimated Energy Production: 1500 KWh/month @12.5mph
*Note: Prices listed are the manufacturer’s suggested retail price, it is quite possible to find them for less (nobody pays retail anymore, right?)
Additional Resources:
All pictures are courtesy of the manufacturers.
What about the larger blades on the turbins?
would it b better or would it cause to rotate slower?
and what size of power out put would I need to help out
on my electric bill?
I guess I should have read the comments first - You are right Todd Cesere - the spec given in the article is off by 3 times.
Timothy - I am actually surprised at the other accurate numbers though. Usually the rated power is given with no explanation which makes the outputs looks unrealistically very much higher.
About the AVX1000 - The only unit not on a tower - I seriously doubt the output - there is no way for it to be believable without independent testing. None of the reputable suppliers make any such claims for rooftop units.
1. Southwest Windpower Skystream 3.7 at 400 kWh/month and 10 cents per unit returns 480.00 USD per year for an investment of 5,400 USD plus tower
2. Southwest Windpower Air X at 38 kWh/month and 10 cents - return of 45 USD per year - investment of 600 USD plus tower - a roof top unit but probably rated correctly
3. AeroVironment Architectural Wind - no output and no return without independent confirmation - the specs given on their site are nothing
4. Southwest Windpower Whisper 500 - 500 kWh/month and 10 cents - return of 600 USD per year - investment of 7.100 USD plus tower
5. Bergey Excel - 1500 kWh/month and 10 cents - return of 1,800 USD - investment of 22,000 USD plus
Attractive to you and I am not sure that is all the costs.
Commercial wind - OK it fits but residential wind is not there.
If you’re intending on buying a Skystream 3.7, you’d better do your research on the product. I’m running across a LOT of information from numerous buyers who are NOT satisfied with their approx. $12K investment. Poor unit design, atrocious customer service, and lack of timely shipping on replacement parts are high among the list of complaints against the producer. I was seriously considering on buying one of these units until my research into the product started yielding too many customer complaints about several defects, too much downtime due to electronics failures, delamination of blades, etc.
non capisco perchè cleantechnica non da la possibilità di contatare il costruttore o l’inventore per poter fare
business
There are numerous problems with Skystream. You should check this website:
http://www.windenergytruth.com
Educate yourself before you fall victim to this defect-riddled product. It will never pay for itself and the problems with it are numerous.
@Charles - “what size of power out put would I need to help out on my electric bill?”
Look at your bill: see how many kwh per month your usage is now. Then see what the manufacturer lists as the expected kwh per month that each size generates.
You can decide how much of your total usage you want to offset with a turbine.
Very inspiring article. Helpful for everyone looking for a reliable micro wind turbine. Thanks.