Member Reviews: Mariah Power Windspire

 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...

We purchased and had installed two Windspires in May of 2009.  After shelling out a whopping $14,000 we had high hopes.  Our building site is situated on the side of a mountain with optimum wind conditions.  These turbines have never, I repeat never, produced more than 80 CENTS a month in power.  The company was notified in August 2009 of this problem.  They informed us that we had received "defective" (their word) turbines and inverters.  We were promised a complete replacement.  As of July 2010, nothing has transpired.  We've been handed off from one corporate stuffed shirt to another, all the way up to the supposed CEO.  Nothing...no replacement, no equipment, no electricity.  We...