Handling the general problem is made much easier with e-fuels to handle very long term storage and rare outages. The cost can be estimated and isn't that high,

Handling the general problem is made much easier with e-fuels to handle very long term storage and rare outages. The cost can be estimated and isn't that high, even if the round trip efficiency of storage with e-fuels is not very good. BTW, the battery cost estimates there in that link seem very high, not reflecting the recent collapse in LFP prices from China.