Huff ‘n’ puff geothermal fracking: Earth batteries at 200% efficiency
Sage Geosystems has pioneered a new form of cheap energy storage that uses the Earth as a giant bellows, pumping water into underground fractures, then letting it squirt back up at 70% efficiency – or 200% efficiency if you also harvest heat energy.Con… Continue reading Huff ‘n’ puff geothermal fracking: Earth batteries at 200% efficiency