Portable solar-powered desalination devices address this problem. These typically use less expensive sunlight-absorbing materials that heat and evaporate seawater.

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Solar isn't just for your electricity needs, find out how you can heat water and cut your bills by half in our solar water heater ultimate guide.

A solar charging station on wheels is covering ground alongside a herd of dairy cattle at the West Central Research and Outreach Center in Morris, Minnesota. Find out how it's working so far.