If I wanted to put some solar panels on my roof, how many would i need and how many watts would they have to be to be able to power my whole house?
Short answer - Don't worry about it. Just get as many as you can, but stay connected to the power grid. You'll sell the power company electricity when it's sunny and still have electricity at night. Long answer - You need to figure out how much electricity you use. Running an oven, air conditioner, hot water heater, and all that stuff at the same time uses a lot of power.
Well, the best way to buy solar panels is to shop by watts. Solar panels come in a wide variety of watts, from to over 200. However, the more watts a panel has, the more it costs. I would suggest getting small things first, and gradually converting to solar power so as to help the environment and save money. If you have an outdoor pool, buy a solar collector to heat it. It will extend your swimming season and once you hook it up, you won't have to worry about it. (My cousins have this on their pool.) Also, there are solar cell phone chargers available for purchase, you could get one of those. As for your house, you would need several solar panels and a converter to be able to power your whole house on solar energy.
Actually even if you cover your whole roof with panels, you wont get enugh power to even run a tv, fan and light at the same time. Solar panels give out a very less power output.
all depend to the surface of your solar panel
