Is Plug-In Solar Legal in Montana?
Gray area - check utility Avg rate ~13¢/kWh
Last verified: June 14, 2026 · source data
Recommended starter kit for Montana
While Montana finalizes its rules, this is the kit most readers start with.
AUECOOR 600W Complete Grid-Tie Kit
$$$
600W · 6×100W panels + 1000W inverter · ships from China, ~3–6 wks
Check price on AmazonPrices approximate — last checked July 10, 2026. Compare all kits →
As of 2026, Montana has no specific statewide law that names plug-in or balcony solar, so it sits in the same legal gray area as most of the U.S.: generally not banned, but governed in practice by your utility's interconnection rules rather than a clear state statute. Electricity here is relatively cheap, so the savings per kWh are smaller and payback is slower - plug-in solar still helps, but the economics are gentler than in high-rate states. In Montana, residential power mostly comes from NorthWestern Energy, and their interconnection or notification policy is the real gatekeeper for a small grid-tied system. Before buying, confirm with them that a plug-in microinverter setup is permitted, stay within any wattage cap they specify, and choose a UL-listed (UL 3700 pathway) kit for safety.
Before you buy in Montana
Call your electric utility and ask: (1) do they allow small plug-in / behind-the-meter grid-tied solar, and (2) is any notification or interconnection form required? Stay within the wattage they specify, use a UL-listed microinverter, and keep written confirmation.
Then estimate your numbers with our savings calculator (pre-loaded with Montana's rate).
Ready to start? Compare the top kits for your home in our Best balcony solar kits 2026 guide →
Nearby states: Idaho · Wyoming · South Dakota · North Dakota · see the full 50-state tracker.