Cost & Savings Breakdown
Based on $150/month electric bill in Butte
System Size
10.2 kW
Annual Production
14,038 kWh
Gross System Cost
$31,710
Federal Tax Credit (30%)
-$9,513
State Incentive
-$500
Net Cost
$21,697
Monthly Savings
$122
CO₂ Offset/yr
12,915 lbs
25-Year Savings Projection
Utility & Net Metering
Local UtilityNorthWestern Energy
Net Metering PolicyFull Retail
Compensation RateFull retail rate
Capacity LimitNo overall limit
Electricity Rate$0.104/kWh
Peak Sun Hours4.7 hrs/day
Available Incentives
30%
Federal ITC — Deduct 30% of your system cost from federal taxes. Available through 2032.
$500
Montana State Incentive — Montana offers a $500 tax credit for residential solar.
Common Questions
How much does solar cost in Butte?
Solar in Butte, Montana costs approximately $31,710 for a 10.2 kW system. After the 30% federal tax credit, your net cost is about $21,697.
What is the solar payback period in Butte?
The estimated payback period for solar in Butte is 14.9 years, based on a $150/month electric bill and local sun hours of 4.7 hrs/day.
Does NorthWestern Energy offer net metering?
NorthWestern Energy offers Full Retail net metering. Full retail rate.