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Alphabet wants to fix clean energy's storage problem with salt

The secretive research lab which hatched Google's driverless car is currently developing a renewable energy storage system involving vats of salt and antifreeze.

Photo: Martin Meissner/AP/POLFOTO

Alphabet Inc.'s secretive X skunk works has another idea that could save the world. This one, code named Malta, involves vats of salt and antifreeze. 

The research lab, which hatched Google's driverless car almost a decade ago, is developing a system for storing renewable energy that would otherwise be wasted. It can be located almost anywhere, has the potential to last longer than lithium-ion batteries and compete on price with new hydroelectric plants and other existing clean energy storage methods, according to X executives and researchers.

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