National Solar Capacity Ranking: 45th
Updated September 2026
SEIA’s Major Solar and Storage Projects List is a database of all U.S. ground-mounted solar projects, 1 MW and above, that are either operating, under construction or under development.
369 MWdc
150 MWh
45th (45th in 2025 additions)
52,425 homes
1.61%
368
27 (4 Manufacturers, 18 Installers/ Developers, 5 Others)
$680 million
411 MW over the next 5 years (ranks 47th)
12,972
While Montana’s solar capacity is expanding, dedicated storage policies and deployment remain limited. As renewable energy development continues, energy storage is expected to play a larger role in improving grid reliability and supporting future market growth.