SkyStream 3.7TM
     1.8 KW Residential Power Appliance

SkyStream
Is a breakthrough in a new generation of RPA (Residential Power Appliances) that will change the energy landscape of how homes and small businesses receive electricity. SkyStream is the first fully integrated system that produces energy for less than the average cost of electricity in the United States and it produces usable energy in exceptionally low winds.

SkyStream is available on towers ranging from 33 to 110 feet. Its universal inverter will deliver power compatible with any utility grid from 110-240 VAC. SkyStream will efficiently and silently provide up to 100% of the energy needs for a home or small business. Any extra energy is fed into the grid spinning the meter backwards.

 

Former President Bush installs a Skystream 3.7 in Maine..... Read the Article

Technical Specifications

Model:   SkyStream 3.7TM
Rated Capacity:   1.8 kW     Weight:   154 lbs / 70 kg
Rotor Diameter:   12 feet / 3.72 m     Swept Area:   115.7 ft2 / 10.87 m2
Type:   Downwind rotor with stall regulation control
Direction of Rotation:   Clockwise looking upwind
Blade Material:   Fiberglass reinforced composite     Number of Blades:   3
Rated Speed:   50-325 rpm     Tip Speed:   66-213 f/s /9.7-63 m/s
Alternator:   Slotless permanent magnet brushless     Yaw Control:   Passive
Grid Feeding:   Southwest Windpower inverter 120/240 VAC 50 -60Hz
Braking System:   Electronic stall regulation with redundant relay switch control
Cut-in Wind Speed:   8 mph / 3.5 m/s     Rated Wind Speed: 20 mph / 9 m/s
User Control:   Wireless 2-way interface remote system
Survival Wind Speed:   140 mph / 63 m/s

Database of State Incentives                                                                                     Video Animation of a Working Skystream

Energy output
KWh per month
kWh per month 175 230 400 440 500 570 620 670 710 750 800
Wind speed mph 8.9 10.0 11.2 12.3 13.4 14.5 15.6 16.8 17.9 19 20.2

Skystream 3.7 Price List

SkyStream 3.7 Frequently Asked Questions

What is SkyStream 3.7TM?
What will it cost and how long will it take to pay for itself?
What makes this product unique?
Does it make sense for me to install this system?

How do I get a SkyStream installed at my location?

What is SkyStream 3.7TM?

Skysteam 3.7TM, developed by Southwest Windpower in collaboration with the U.S. Department of Energy's National Renewable Energy Laboratory, is the newest generation in residential wind technology. Skystream 3.7TM has a 1.8 kW rating and is the first fully integrated small wind generator specifically designed for the grid -connected market. Skystream 3.7TM is designed for homeowners looking to reduce or eliminate their monthly electric bills.

SkystreamTM 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. SkystreamTM 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 in Colorado for almost two years and has undergone extensive performance, reliability and duration testing in accordance with international accepted standards.

What will it cost and how long will it take to pay for itself?

SkyStreamTM, installed, cost approximately $11,000 to $15.000, depending on tower height and installation cost. Cost includes the generator, operation controls, inverter and tower. SkyStream is also available with taller towers to accommodate a locations wind resource.

SkyStreamTM is capable of producing energy at a fraction of the cost of other small wind, solar photo-voltaics or reciprocating engine technology. SkyStreamTM is expected to produce energy for under $0.09/kWh. Depending on installed cost, average wind speed, local cost of electricity and state rebates, SkyStreamTM can pay for itself in as little as 5 years.

Some states and countries offer incentive investment programs that can cover as much as 60% of the cost of a Skystream 3.tTM. To learn more about states incentive programs, go to:  

What makes this product unique?

Skystream 3.7TM is unique for being the first all-inclusive wind generator with controls and inverter built-in.

Skystream 3.7TM was designed for very low winds, reaching rated power at just 20 mph. In addition to innovative technology, Southwest Windpower invested heavily in tooling to reduce component cost.   Doing so makes it possible to sell Skystream 3.7TM at such a 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 very quietly.

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.

 

 

Need help in determining if your location is good for a wind generator??  

                                           Check out this Site Planning Guide

 

Does it make sense for me to install this system?

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

Adequate Wind Resource:   Minimum average wind speed for SkyStreamTM is 10 mph. Ideal sites have 12 mph average wind or greater.

Site Free from Obstructions:   Clean, unobstructed wind is best for Skystream 3.7TM. The top of the tower should be a minimum of 20 feet above any surrounding object within a 300 foot radius. Although the machine can be installed on smaller lots of land, properties of one acre or more are typically ideal as they will more likely have unobstructed wind. 

Suitable Zoning:   Tower installation must comply with local zoning regulations. It is also advisable to make sure there are no Home Owner Association regulations that prohibit the use of towers.

Interconnection with Utility:   Local utility must allow for interconnection. The 1979 federal PURPA act requires small systems can connect to the electrical grid; but homeowners should consult their local utility.

Consumers should have an electrical cost of $0.10/kWh or greater. Consumers should look at their electric bill or consult with their local utility.

 

How do I get a SkyStream installed at my location?

So you have determined that a SkyStream will work on your property…now the next step is how to get it installed. Because of the great variations of local building codes and licensing restrictions, it is impossible for  e Marine to provide a  turn-key installation  solution for you.  But to that end,  we can assist in many ways as detailed below to help get the wind generator installed. You can do it yourself or you can hire a local general contractor to do it for you.  

General Contractor: Identify a General Contractor (GC) in your immediate area that can support you on the SkyStream project. Their responsibility  will include permitting, electrical and foundation work.  No need for him to be a wind generator expert, e Marine will provide those services to him.  e Marine can supply standard foundation drawings, mast and the necessary wind generator  certifications for submittal to the building department to assist in obtaining any necessary permits.

With permits in place,  the GC can locate, form and pour the mast foundation along with installing the electrical conduit.  e Marine  can also provide  pre-made bolt  ring that drops into the foundation  when it is poured aligning up to the mast base. 

Once the foundation has set (typically 30 days after pour), the e Marine factory trained team can come in  to assemble and start up the Skystream (typically in less than one day).

Do it yourself?  You can accomplish the installation on your own as well,  start by getting the permits for the  installation.  e Marine can provide you  standard foundation drawings, mast and the necessary wind generator certifications for submittal to the building department. Once the mast foundation is in place and is fully set you can install the Skystream.  Masts greater than the 33.5’ version will require the use a of a light crane to raise it in place. The 33.5’ mast can be raised by two men, a pick up truck and the option Gin Pole and Hinge Plate kits that we have available.  Assembly and wiring of the Skystream can be accomplished on your own by following the detailed instructions provided  with your package or you can contract with e Marine to do it for you.

Your Responsibility 

Now that you are in the electric power generating business, you will need to connect to the electric grid.  Before connecting, you must contact the local electric utility supplier and sign a contract with them for “net metering”.  Each utility has its own program requirements but this will be a necessary part of the project.  Contact your local utility, tell them you want to connect using “net metering”   to a grid tie wind generator.  They will provide a contractual agreement that you will need to enter into.  Most likely they will require a special liability policy with them as the named payee for protection against power from your system going back onto the grid when a power outage occurs. They may also have some special equipment interface or interconnect requirements which you will have to meet.  Some additional electrical requirements may be necessary as deemed by local code.

 

 

Skystream Price List

Skystream 3.7 Wind Turbine
Item Part # Description Price
Skystream 3.7 Land
208/240V Complete 		1-SSL-10-240 Skystream Generator Land 60 HZ,
North American Grid Only 		$6220
Skystream 3.7 Marine 208/240V Complete 1-SSM-10-240 Skystream Generator Marine 60 HZ,
North American Grid Only 		$6970
Skystream 3.7 Land 120/60Hz, 1P Complete 1-SSL-10-120 Skystream Generator Land 60 HZ,
North American Grid Only 		$6220
Skystream 3.7 Marine 208/240V Complete 1-SSM-10-120 Skystream Generator Marine 60 HZ,
North American Grid Only 		$6970

Skystream 3.7 Monopole Tower
Item Part # Description Price
Monopole Tower 33 3-CMBP-3043 Monopole Tower 33' 6" Height $3,970
Monopole Tower 45 3-CMBP-3206 Monopole Tower 45' Height $5,035
Monopole Tower 60 3-CMBP-3406 Monopole Tower 60' Height $11,215

Whisper Tower Kits for Skystream 3.7
Item Part # Description Price
30' Whisper Guyed Tower Kit 1-TWW-11-01 does not include pipe & anchors $949
42' Whisper Guyed Tower Kit 1-TWW-11-02 does not include pipe & anchors $1035
70' Whisper Guyed Tower Kit 1-TWW-11-03 does not include pipe & anchors $1517

Skystream 3.7 Accessories
Item Part # Description Price
Tower Bolt Kit 42'(Pier Foundation or Mat) 3-CMBP-3048-01 includes blots & bolt template for pier foundation $605
Tower Bolt Kit 33' (Mat Foundation) 3-CMBP-3048-02 includes blots & bolt template for mat foundation $515
Gin Pole Kit 2-TWS-101 includes gin pole, shackles and wire $699
Hinge Plate Kit 2-SSOT-100 includes hinge plate and hardware $338
Tower Adaptor Kit (5") 2-TWS-100 includes aluminum casting and hardware $179
Wireless Remote Display Kit
916 mHz 		2-SSUP-100-02 includes display, antenna and AC adapter $335
USB Converter Kit 2-SSUP-101 includes USB Converter and CD $99
Wireless Remote Batter Sensor 916 mHz 1-CRBC-10 includes display & antenna (required for battery charging) $250

 

Skystream 3.7 support services by e Marine
Item Part # Description Price
Site Survey  4-LSF-10 Site visit to your location for review and recommendations of  feasibility of  installation of a Skystream. Full credit issued at time of  wind generator order (fee does not include travel costs which are non-refundable) $200
SkyStream Set-up 4-LSF-20  On Site set-up of the SkyStream which includes inspection and assembly of wind generator head, mounting  and wire termination. Start up of wind generator and any necessary adjustments. (fee does not include travel costs) $790

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