Mariah Power Windspire
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Attractive - Manufactured with corrosion-resistant soft silver paint that can be re-painted in any color, Windspire provides a truly aesthetically-inspiring renewable wind power option. It is appropriate for rural, suburban, and some urban residential environments alike, and at 30 feet, it is below typical residential and urban zoning restrictions. Several Windspires placed artistically in arrays can form an interesting display of kinetic art in front of small businesses, commercial buildings, resorts, etc.
Extremely Quiet - Our uniquely slender vertical axis design allows Windspire to operate with a low tip speed ratio (the edges of the rotor spin just 2 to 3 times the speed of the wind), which makes it virtually silent.
Durable, Simple Installation, Low Maintenance - Rugged yet simple construction means durability - Windspire is rated for winds up to 100 mph - and low maintenance for customers. Installation is simple, and can be completed by a professional installer in a matter of hours. The Windspire kit comes complete with everything you will typically need, except the concrete, so installers do not need to source numerous other components. Once installed, you can "plug 'n produce" - plug it into your outlet to begin drawing power from the wind. Alternatively you can have it hard-wired into your building. Regular maintenance is limited to a couple of minutes a year to oil the bearings, located 9 feet above the ground.
Power from Advanced Technology - Mariah Power’s patented technology includes a rotor, generator, and inverter designed as a complete system to optimize the conversion of wind energy into electricity. The 1.2 kW (1.2 kilowatt, or 1200 watts) Windspire will produce approximately 1800* kilowatt hours per year in 11 mile per hour average winds. The Windspire also includes an internal wireless modem that can continuously transmit power production information directly to your computer so you can check your power production at any time.
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User Reviews: Mariah Power Windspire
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reviewed June 1, 2009 at 6:27 am Check the web site at www.mariahpower.com - unless you are in an area with exceptional wind speeds the output is minimal.
At 5 m/s (12 mph) wind speed the puts out between 100 and 150 watts. Using the commercial capacity factor of approx 0.35 (say 150*8760*.35/1000) you may reach 500 kWh annual production.
The unit base price is about 6,000 USD plus what ever else is required. The projected annual income at 10 cents per unit would be 30 and 50 USD.
The economic calculator on the Mariah site ignores capacity factor which is used in all commercial turbine calculations - of course an engineer is involved there for a buyer where you may or may not have that advantage.
The unit is under testing at this time by the NREL (I believe it is NREL) to certify the capability of the design.
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