I recently purchased a home in Maricopa AZ. With that said, I'd like for it to be most efficient. It has a forced air system for heat and cooling. I don't know the size of the cooling unit. How does one figure out the number of panels needed to properly supply enough current to operate devices properly.

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    This would take a LOT to answer. I would try to find a book on the subject, and there are surely many such books on the market. – user558 Sep 13 '13 at 12:17
  • Just because it is a hard question doesn't mean it is bad - but we need a lot more info in the question. – DMoore Sep 13 '13 at 16:36
  1. Calculate the required load for your house. Call that L
  2. Identify the rated power one panel generates. Call that P
  3. L/P = Q - quantity of panels needed.
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  • You may need to add a few panels, even in AZ you will not get full power 24/7/365. – RedGrittyBrick Sep 13 '13 at 12:51
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    Rated power on a lot of newer solar panels are now rated at an average WattHour per day and have a scale for regions, not just max Wattage. But this does still only calculate the bare minimum and doesn't take loss in line voltage, storage capabilities, nor inverting. – Jason Sep 13 '13 at 13:55

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