Free tools can help you estimate how much energy you'll get from a plug-in solar panel - and how long it'll take to earn your money back. But can you trust them?

Adding solar panels (and by extension, an entire system) to your home often provides two distinct benefits: Lower electricity bills and an increase in the home's overall value. However the process can ...

While it might seem intimidating, it’s actually fairly easy to come up with a decent estimate of how many kilowatt-hours your solar panels can produce each day. When making this calculation, keep in ...

Learn how to calculate the number of solar panels required for properly sizing solar arrays to achieve net zero and meet your needs and goals. Some websites claim they can calculate how many solar ...

Total energy independence takes more than a few panels. See what you really need for solar output and battery storage to disconnect from the grid for good.

Kelly has over 10 years of experience writing about home design and improvement for many prominent publications. She also spent several years working at a tech startup for an interior design game ...