For FL, a good rule of thumb is to take the nominal rating of the system (in units of kW) and multiply by 4 (hrs) to get the average kWh per day. Based on 9797 kWh per yr, I am guessing they have a 7.2 kW nominal system. This essentially comes from NREL, a Government Energy Lab.
Quote:
Originally Posted by Fastskiguy
Are you really getting 9797 KWh/yr or is that what the company says? Just asking because my dad is getting a fair bit less than what the panels were sold to produce and that is a big part of extending out the payout to 20 years for him.
It's sort like "these panels will produce 10,000 KWh/yr!" but they are only producing at that rate on a perfectly clear sky on Jun 21st. A cloudy mid december day is a whole lot different.
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