Battery storage can, and most likely will, be the solution for day-night fluctuations in energy use. However, for the amounts of energy that seasonal energy sto

Battery storage can, and most likely will, be the solution for day-night fluctuations in energy use. However, for the amounts of energy that seasonal energy storage would require, it's not really a viable solution. Regarding clean seasonal energy storage - UK, French and German authorities all independently came with studies(1) that arrived to the same conclusion - synthetic methane is the only viable option. Very expensive, but the engineering is doable. Gas plants are here to stay. (1) https://english.bdi.eu/media/presse/presse/downloads/20180308_Climate_Paths_for_Germany_ExecutiveSummary_FINAL.pdf https://english.bdi.eu/media/presse/presse/downloads/2018030... https://publications.jrc.ec.europa.eu/repository/handle/JRC108496 https://publications.jrc.ec.europa.eu/repository/handle/JRC1...