Hydropower, once used by farmers in ancient Greece to grind grain, is today employed at such iconic locales as the Hoover Dam in Nevada and the monolithic Three Gorges Dam in China to produce ...

Moving water becomes stored energy as the device’s turbine turns, even during a weak current or when dragged behind a kayak or canoe. The battery takes about 4.5 hours to charge completely, then it is ...

Enomad has created a very unique way of generating power from water sources while you are out and about, away from the gird and exploring nature. The Estream takes the form of a small power generator ...

Portable solar chargers are perhaps the most popular means of keeping devices powered in the wilderness and, as we've seen, portable wind turbines are an option too. To cover all bases though, you may ...

A few days ago, my friend Lee posted a story about the Estream portable water-powered generator to my Facebook wall, asking if he should buy one. My answer? A swear word I can’t print here, followed ...