This and windgas (synthesized methane) seem to be the best candidates for seasonal storage although both still with major issues - embrittlememt/needing CO2. W

This and windgas (synthesized methane) seem to be the best candidates for seasonal storage although both still with major issues - embrittlememt/needing CO2. We have cheap green power (solar/wind), cheap green short to medium term storage (pumped hydro and lithium batteries) but this only gets us to 97%: https://reneweconomy.com.au/a-near-100-per-cent-renewables-grid-is-well-within-reach-and-with-little-storage/ https://reneweconomy.com.au/a-near-100-per-cent-renewables-g...