My cousin used Solarvest for a big commercial project and they were solid, but for residential with batteries I'd lean Plus Xnergy. They've been doing BESS projects for years, even before it became trendy. I've heard Solarvest subs out the battery part sometimes, which isn't ideal.

Yeah, you're probably right about that.

Fought BIM tooth and nail... now it's just part of the toolbox. That learning curve was brutal though.