Yes. Lots of people and companies working on this problem. https://en.wikipedia.org/wiki/Grid_energy_storage https://en.wikipedia.org/wiki/Grid_energy_storage

Yes. Lots of people and companies working on this problem. https://en.wikipedia.org/wiki/Grid_energy_storage https://en.wikipedia.org/wiki/Grid_energy_storage NREL FAQ https://www.nrel.gov/docs/fy19osti/74426.pdf https://www.nrel.gov/docs/fy19osti/74426.pdf Tesla's approach https://www.tesla.com/megapack https://www.tesla.com/megapack Form Energy, one of the best funded startups working on novel grid storage batteries https://formenergy.com/technology/battery-technology/ https://formenergy.com/technology/battery-technology/