In a sandy field on the edge of the Mojave Desert in Lancaster, California, an array of solar panels sits next to dozens of long white boxes that are filled with used batteries from electric cars. At ...

Portable solar panels and solar battery chargers are easy-to-use devices that provide backup power to anyone who happens to be away from a working power outlet, including hikers, car campers, and even ...

Somewhere between 5% and 7% of U.S. households have rooftop solar panels. Many more Americans want them, but high costs, ...