We may receive a commission on purchases made from links. We don't usually talk or think about generators, but they can be real lifesavers when power outages happen. A backup generator will keep your ...

A stream of compressed air does not look like a power source. In factories, it usually hisses through pipes, drives tools, then disappears as waste. But under the right conditions, that same airflow ...

Water has long been a source of renewable power. More than 2,000 years ago the Chinese used water wheels to grind grain and pound ore. In the 1700s water wheels kickstarted the Industrial Revolution ...

Our editor-tested and researched portable and whole-home options keep appliances and other essentials running during an emergency—no matter what.

These editor-tested models are ideal for camping, tailgating, or powering tools when you’re too far from an outlet.