Find the best solar-powered water pumps for irrigating farms, gardens, and more, with our extensive and in-depth reviews of the best solar-powered water pumps.

US-based Salgenx has developed a scalable redox flow battery with two separate tanks of electrolytes, one of which is saltwater. Unlike other flow batteries, the new device is membrane-free ...

San Diego has an ambitious plan to store renewable energy, using extra solar power to pump water up a mountain. This old-style "water battery" technology could be set for a revival.