It really is exciting to see alternative battery systems beginning to see wider commercialization.

I am not aware of sodium-ion batteries for home use, I believe it’s mostly for industrial-scale battery systems. I could be wrong though, would be interested in learning more.

In an apartment setting, IMO the current gold standard is LiFePO4 (Lithium iron phosphate) batteries.

I live in Ukraine and we have constant problems with electricity supply (thank you dear russians). At times you have 1-2 full charge/discharge cycles per day on a 1 Kilowatt-hour battery system. Several LiFePO4 systems in my extended family seem to work close to baseline even after 1.5 years (not used daily though).

I have not seen any options for sodium-ion batteries for home use, but this maybe a local thing.

In a more rural/suburban setting, generators work as backup power supplies for most people. Typically only the well off get a high capacity LiFePO4 systems for house setting.