Product Information
Certification: UL (US & Canada)
Rated Capacity: 1.8 KW
Rotor: 12 feet (3.72 m); 50-325 RPM
Interconnection: Utility connected or battery charging
Alternator: Gearless, permanent magnet brushless
Voltage Output: 240 VAC (Optional 208 VAC)
Estimated Energy Production: 400 KWh per month at 12 MPH (5.4 m/s)
Weight: 170 pounds (77 kg)
Tower: Towers from 34-70 feet (10.4-21.3 m) are available; height is dependent by site
Warranty: Five year limited
Availability: Skystream is available now in North American grid (220V/60HZ), marine and battery charging versions. An international configuration (50HZ) will be available in the second quarter of 2007.

Introduction to the Skystream 3.7
The first small wind generator designed specifically for utility-connected residential use, Skystream 3.7™ from Southwest Windpower lets Americans harness wind energy and take control of their energy bills like never before.

Specifically for Grid-Connectivity Skystream 3.7™ is specifically designed for utility-connected home and business use. In certain states consumers can take advantage of “net-metering” or the sale of unused energy back to the power grid.

Low Cost
A wind power engineering breakthrough, Skystream 3.7™ is the first residential wind appliance to produce energy at a cost ($.09/kWh) that is lower than the retail rate of many electric utilities. The cost of a Skystream 3.7™ is approximately $5,400. Depending on the tower and installation costs, wind speed average, rebates and local electricity costs, Skystream 3.7 can pay for itself in as quickly as 5 years.

All-in-One Solution
Skystream 3.7™ offers a simple, all-in-one solution to harnessing wind energy on a residential scale. Different from all other technologies, Skystream 3.7™ is the first all-inclusive wind generator with the controls and inverter built in.

Energy Production in Exceptionally Low Wind
Designed for very low winds, Skystream 3.7™ begins producing power in an 8mph (3.5m/s) breeze with full output achieved at 20mph (9m/s).

Low Profile
Skystream 3.7™ can be mounted on a 35’ (10.4 meters) tower. This means a vast number of households on one acre or larger lots will now have access to residential, utility-connected wind energy. Towers up to 70’ (21.3 meters) are available. A site assessment is important to determine the best tower height for your site.

Exceptionally Quiet Operation
Skystream 3.7™ operates exceptionally quiet. In fact, Skystream’s sound is unrecognizable over trees blowing in the wind.

Frequently Ask Questions about the Skystream


What is Skystream 3.7™?
Skystream 3.7™, developed by Southwest Windpower in collaboration with the U.S. Department of Energy’s National Renewable Energy Laboratory (NREL), is the newest generation in residential wind technology.

Skystream 3.7™ has a 1.8 kW rating and is the first fully integrated small wind generator specifically designed for the utility-connected market. Skystream 3.7™ is designed for homeowners looking to reduce or eliminate their monthly electric bills.

Skystream 3.7™ is a down-wind (wind hits the blades on the downwind side of the tower) direct drive (gearless or no transmission) permanent magnet wind generator. Skystream 3.7™ uses an innovative 12 ft. rotor and produces approximately 400 kWh per month in a 12 mph wind.

The initial prototype has been operating at the U.S. Department of Energy’s National Renewable Energy Laboratory (NREL) in Colorado for almost two years and has undergone extensive performance, reliability and duration testing in accordance with internationally accepted testing standards.

What will it cost and how long will it take to pay for itself?
Skystream 3.7™, installed, costs approximately $12,000, depending on tower height and installation expenses. Price includes the generator, operation controls and inverter.

Skystream 3.7™ is has tower height options available to accommodate a location’s wind resource.

Skystream 3.7™ is capable of producing energy at a fraction of the cost of other small wind, solar photovoltaics or reciprocating engine technology. Depending on the installed price, average wind speed, local cost of electricity and state rebates,

Skystream 3.7™ can pay for itself in as little as 5 years.

What makes this product unique?
Skystream 3.7™ is the first all-inclusive wind generator with controls and inverter built-in. Skystream 3.7™ was designed for very low winds, reaching rated power at just over 20 mph. In addition to the innovative technology, Southwest Windpower invested heavily in tooling to reduce component cost. Doing so makes it possible to sell Skystream 3.7™ at a very low price.

Its full 1800 watts is achieved at 20 mph with a maximum rotor speed of 325 RPM. Because of the exceptionally low RPM, the machine operates nearly sound free.

Skystream 3.7™ can be installed on a range of tower heights from 35’ to 110’. The optional 35 foot freestanding (no guy wire) tower looks much like a standard light pole.

A visually aesthetic shape played a key role in the design to show that a wind generator is not only a clean source of energy but pleasing to the eye.

Who can install this system?


Southwest Windpower recommends installing Skystream 3.7™ at sites with the following criteria:


Where can this system be purchased?
Skystream 3.7 can be purchased and installed by dealers through out the United States.




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