Discover small solar home battery options, including flooded lead-acid, deep-discharge, and lithium-iron phosphate batteries. Welcome to our series answering reader questions and concerns about how to ...

Small, plug-in solar power systems have become popular in Germany and several other countries. So why haven’t they taken off in the United States? By Claire Brown Across Germany, more than a million ...

Some or all of the mortgage lenders featured on our site are advertising partners of NerdWallet, but this does not influence our evaluations, lender star ratings or the order in which lenders are ...

Switching to solar energy is a major financial commitment and, if you’re like most homeowners, you’ll want to know how long it will take to recoup your investment. This average recovery time, called ...

Solar changes how air conditioning should be sized. Learn how to match cooling capacity with rooftop generation to stay ...

Discover how a solar heat pump system in Australia maximises efficiency. Learn to slash bills and use thermal storage as a ...