Chemical batteries are one possibility. They’re expensive and it’s not clear how reliable they are going to be at scale, but yes, the could help for some period

Chemical batteries are one possibility. They’re expensive and it’s not clear how reliable they are going to be at scale, but yes, the could help for some periods. There are also capacity limitations. They are probably better for day/night scenarios, not weeks-long weather patterns. Some of the ideas like using energy to pump water uphill into a reservoir and then generating hydro power when you release it back down into a lower reservoir are interesting in terms of reliability, but they aren’t great for efficiency (hydro generation inefficiency). You can do that without having a natural river, which reduces some of the ecological issues with dams.