New CO2-holding #batteries can store 200 megawatt-hours of electricity, stabilizing the grid when renewables need a break. It takes less than two years to build and only requires 5 hectares of flat land to construct. https://spectrum.ieee.org/co2-battery-energy-storage?utm_source=mastodon&utm_medium=social&utm_campaign=fedica-Mastodon-Daily-Pipeline
