Setup: Maybe an Ametek PM 30V DC generator with inverter, battery(ies) and homebuilt or purchased blades/hub, etc. nothing too fancy
Purpose: To be able to power light or small evaporative cooler if electricity goes out (and to learn/have fun)
Questions: 1) Is this setup able to power the above 2) when not used for emergency, will the inverters that plug in the wall actually make any difference in electric bill?
If you wire it all up suitably your generator will be able to supply power to the batteries, and the inverter will supply alternating current in place of the power you normally get from your utility company. This power will be more than adequate provide lighting, and should provide more than enough power for the small evaporative cooler. Keep in mind that if you maintain your connection to the power grid you'll have to have a method to automatically disconnect the wind turbine from the grid or to de-power the wind turbine in the event the grid goes down. This is to protect those working on power lines, since you are wind turbine is more than capable of back feeding the system, and the voltage from your wind turbine will jump each time it passes through a transformer into the power utilities main power lines.
Whether your system will actually make a difference in your utility bill is dependent on how efficient the entire system is, how much it costs to purchase, and how much it costs to maintain. Hope this helps!
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