Batteries are (to me) almost a requirement to even consider solar with NEM 3, however I think in general it's a poor economic return (like 12 to 20 year paybacks), nothing like the paybacks of NEM 2.0....
i think there might be two points about this regarding why anyone would consider batteries:
1) to reduce the NBCs that are billed in the first place
2) to save as much electricity as possible so that you draw from that instead of pulling from the grid (which I think directly corresponds to the first point)
Per your point, it seems like the $$$ saved on NBCs would be miniscule vs the actual cost of batteries (especially if paying someone for the install). I could see how provisioning the system so that it's "hybrid inverter" as whomever mentioned above could be worth doing though? Or maybe that all only really makes sense when there comes a time that batteries *do* make sense (so at *that* time you would convert the system, if possible, to "hybrid inverter" and add your batteries etc...)
I do wonder, generally speaking, about batteries and if they might be worth buying in the near future due to some upcoming "anticipated events and announcements" ... not specifically [only] for solar but even for small backup/shed solutions. I feel like I've even heard of people DIYing their own battery backup solutions vs having anything professionally installed.
There may be non economic reasons you would want to add batteries to your NEM 2.0 installation (like backup power), but generator solutions are more cost effective in my opinion.
Statistics: Posted by mjg — Sun Jan 05, 2025 11:47 am