Pump it up
August 20, 2018 9:57 AM Subscribe
The trouble with solar power generator is that it's hard to store electricity. Batteries are expensive. Flywheels are cool but expensive and have undesirable failure modes. Near San Diego, water authority officials want to create a pumped hydro storage facility that could store up to 500 MW. But what if you don't already have a huge reservoir? A Swiss startup wants to use a crane to lift concrete blocks as a storage mechanism.
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