There are certain assumptions that are not accurate in all cases. For instance, in the part of PA where I live, power is about 10 cents per kWh, not 8.6 cents. And the pricing of the panel, listed at $699, can be much less if you are a careful shopper. But I do agree that in general the payback is not there yet.
That is correct, the data shown in post #26 don't hold true for PA, due to the much lower solar energy levels there, solar cell performance will be much lower than the national average and lower than show in my table. (source)
"And the pricing of the panel, listed at $699, can be much less if you are a careful shopper."
Citation please...
--Boot Hill
