Use winter sunshine hours instead of summer hours whenever you are calculating how many solar panels you will need. This is because winter sunshine hours only add up to about half that of summer. It is better to overestimate how many panels you will need rather than underestimate. If you underestimate, you will end up losing power when you need it.
Installing a solar pool heating system on a house in Brandon Florida.
Position solar panels on the east or west side of your home or business. Since the sun travels from east to west throughout the day, placing solar panels on areas of your roof that face north or south is a waste. You'll get much better energy returns by following the same path as the sun.