I’m not quite following the math. I don’t see the individual panel cost, for one, and 800W at 100W per panel is 8 panels, not 4, and which rate did you use per kWh?
I’m in California, we don’t have very many cloudy days.
My bonehead calculations say that I’m already in positive territory.
OTOH, I didn’t factor in what I could have made investing in a mediocre stock instead, assuming I’d recognize even a mediocre stock if if slapped me up side the head...
You want darn near anything built in silicon, I’m your guy, but in the financial world? I’m totally lost.
Do you have 8 panels? I kept asking but you never answered.
That would double your output over the 4 that I guessed and cut in half the time it takes to pay back the cost of your system. That means that at $.16 a kilowatt (You said that was what PG&E said was the average) it will take you twenty years to pay off your system. Actually 8 X 800W = 6.4 kilowatts per day. At $.16 a kilowatt that is $1.02 a day of electricity. So your system will pay for itself in 26 years based on today's electrical rates.
You want darn near anything built in silicon, I’m your guy, but in the financial world? I’m totally lost.
Maybe not as lost as you think. The idea behind the financial world is to try and predict the future. It is impossible to predict the future. Those of us in the financial world are trying to do something that we know is impossible. Do you know the definition of insanity?