Solar in Montana, utility by utility
What solar saves in Montana depends on who sends your electric bill. Each page below shows that utility’s verified 2026 residential rate, fixed charge, demand charge and net-metering rules, what they mean for a solar system, and a worked example, with every figure linked to the utility’s own document.
Which utility serves my address?
Investor-owned utilities (PSC-regulated)
- NorthWestern Energy15.8¢/kWh · $4.20/mo · no demand charge
- Montana-Dakota Utilities14.5¢/kWh · $7.68/mo · no demand charge
Electric cooperatives
- Beartooth Electric Cooperative8.03¢/kWh · $25.00/mo · $4.95/kW demand
- Big Flat Electric Cooperative10.9¢/kWh · $38.00/mo · $1.00/kW demand
- Big Horn County Electric Cooperative12.6¢/kWh · $40.00/mo · no demand charge
- Fergus Electric Cooperative10.6¢/kWh · $35.00/mo · $5.50/kW demand
- Flathead Electric Cooperative6.54¢/kWh · $26.66/mo · $4.93/kW demand
- Glacier Electric Cooperative8.25¢/kWh · $35.00/mo · no demand charge
- Hill County Electric Cooperative11.9¢/kWh · $40.00/mo · no demand charge
- Lincoln Electric Cooperative7.03¢/kWh · $49.70/mo · $2.80/kW demand
- Lower Yellowstone Rural Electric Cooperative7.40¢/kWh · $25.00/mo · no demand charge
- Marias River Electric Cooperative8.41¢/kWh · $30.00/mo · no demand charge
- McCone Electric Cooperative14.5¢/kWh · $47.75/mo · no demand charge
- Mid-Yellowstone Electric Cooperative11.2¢/kWh · $43.50/mo · no demand charge
- Missoula Electric Cooperative7.12¢/kWh · $32.00/mo · $3.00/kW demand
- NorVal Electric Cooperative11.5¢/kWh · $40.00/mo · no demand charge · unverified
- Park Electric Cooperative8.60¢/kWh · $27.00/mo · $3.00/kW demand
- Ravalli Electric Cooperative8.49¢/kWh · $39.00/mo · $3.80/kW demand
- Sheridan Electric Cooperative9.50¢/kWh · $35.00/mo · no demand charge · unverified
- Southeast Electric Cooperative9.40¢/kWh · $33.00/mo · $0.50/kW demand
- Sun River Electric Cooperative6.72¢/kWh · $30.00/mo · $7.05/kW demand
- Tongue River Electric Cooperative12.1¢/kWh · $39.00/mo · $1.00/kW demand
- Vigilante Electric Cooperative7.10¢/kWh · $32.00/mo · $1.75/kW demand
- Yellowstone Valley Electric Cooperative11.7¢/kWh · $27.00/mo · $2.00/kW demand (net-metered)
Federal and municipal
- Mission Valley Power9.01¢/kWh · $27.00/mo · $0.80/kW demand
- City of Troy Electric6.47¢/kWh · $16.35/mo · no demand charge · unverified
How these pages are kept honest
Every rate was read from the utility’s own schedule or net-metering policy and is linked on its page with the schedule’s effective date and the date we checked it (last full review November 1, 2026). Three utilities publish no schedule online and are marked unverified rather than guessed quietly. Rates are re-checked each spring, when most Montana co-ops reprice. The estimator uses exactly these figures; see the methodology. Looking by place instead? Solar by city.