This winter storm is making me actually think about installing a whole home backup power source (I know, me and half the US right now).

I already have solar but no battery as my utility company does 1:1 net metering.

Does anyone reading this have any experience in building a grid-tie battery system? Powerwall is an option I guess but I’d like to DIY this thing if I can so I choose when it get charged not an algorithm.

@ironicbadger I went with EG4. Aside from the incredible weight of a 13 KWh battery, it's DIY friendly. It's hard to stomach the "professional" install costs of other systems when they do the same thing.