How many solar panels do you need to power a whole house?
October 20th, 2008
When I look at my electric bill, it says that on a daily average my house is using 60 KWH kilowatts per hour. I noticed that some solar panel kits for about $15,000 for 3,000 watts. So is the 3,000 watts converted into kilowatts so that it amounts to 3 kilowatts? I don't understand how this all works. I'm trying to figure out how many batteries I need and how many solar panels I need to go 100% off of the grid.
I am 100% off of the grid and am complete self sufficient. On my ranch I have a total of 27 solar panels, and 2 wind generators.
The approximate annual household energy consumption for a three bedroom house is 4200 KWH to 7500 KWH a year. That breaks down to between 11.5 KWH and 20.5 KWH per day and about 64 small panels.
The typical size of a solar panel system that totally powers a house is 2,000 watts. That's about enough power to run 30 light bulbs. But remember, if you are going to run your house off of solar power, you wouldn't use the same old light bulbs. Instead, you would use long lasting florescent light bulbs.
It is recommended that you also use wind power to charge your battery bank as 64 panels is a lot of panels and money!
For more information about how many solar panels you need for your house use the awesome solar power calculator at solar power calculator
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