Multiple factors determine solar panel size and weight. Jess Taylor, co-founder of Practically Green, has years of experience advising families on how to make their homes more sustainable through ...

The ideal size for a solar panel system will be individual to you and your home. While the average system is about 20 to 25 panels, you need to understand what your energy needs are, what your ...

Solar panels can save you money on your electricity bills, but how much do they cost, and are they worth the investment? Read ...

West Coast: 1.8 Midwest: 1.3 Finally, you'll need the solar panel's wattage. Divide the annual total wattage needed by the production ratio and then divide that by the wattage of your panels.

Solar panels are best if "your roof is unobstructed by trees or other structures and south-facing with a slope between 15 to 40 degrees," said Nerdwallet. The size and age of your roof.

How to calculate solar panel system size If you’re wondering whether your roof is large enough for a full set of solar panels, there are a few quick steps you can take to get a fairly accurate ...