NorthWestern Energy electricity rates
Investor-owned utility · Wyoming
NorthWestern Energy is a for-profit, investor-owned utility regulated by the state utility commission, serving 299 homes in Wyoming. Its residential customers pay an average of 13.78¢/kWh including fixed and delivery charges, 23% less than the U.S. average.
Rate basis: EIA-861M monthly utility data, 12 months ending 2026-07.
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NorthWestern Energy bill estimates
| Monthly use | At average all-in rate | Base tariff charges* |
|---|---|---|
| 500 kWh | $68.90 | $62.45 |
| 1,000 kWh | $137.80 | $120.69 |
| 1,500 kWh | $206.70 | $178.93 |
| 2,000 kWh | $275.60 | $237.18 |
*REDS-1 Residential Customer (effective 2023-04-01, $4.20/month customer charge), energy and fixed charges from the OpenEI Utility Rate Database. Riders, fuel adjustments and taxes are often billed separately, so real bills usually land closer to the all-in column. Calculate your bill.
NorthWestern Energy residential rate plans
| Plan | Effective | Customer charge | Energy charges |
|---|---|---|---|
| REDS-1 Residential Customer | 2023-04-01 | $4.20 | 11.65¢ |
| REDS-1 Residential Customer | 2023-04-01 | $4.20 | 3.12¢ |
| REDS-1 Residential Employee Customer | 2017-09-01 | $2.46 | 4.72¢ |
| REDS-1 Residential Employee Customer | 2017-09-01 | $2.46 | 8.45¢ |
Source: OpenEI U.S. Utility Rate Database. Rates change. Check the linked tariff or your bill for current figures.
NorthWestern Energy rate history
2015–2025: +5% change in the average residential rate (11.81¢ → 12.39¢). Annual EIA-861 data.
Outages & reliability
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Reliability history
NorthWestern Energy doesn't report reliability metrics to EIA (common for small utilities).
Outages in counties served (2025)
From ORNL EAGLE-I, which tracks customers without power every 15 minutes. These counts cover every utility in each county. Weighted across NorthWestern Energy's counties, customers averaged 2 hr 9 min without power.
| County | Outage min/customer | Days with outages | Peak customers out | Worst day |
|---|---|---|---|---|
| Park | 154 | 29 | 2,206 | 2025-07-26 |
| Teton | 111 | 26 | 1,534 | 2025-10-27 |
NorthWestern Energy service area
NorthWestern Energy serves 2 counties in Wyoming and 14 ZIP codes.
Park, Teton
Programs, smart meters & solar
| Smart meters (AMI) for homes | 96% |
| Time-based rate programs | None reported |
| Net-metered solar homes | 0 reported |
NorthWestern Energy at a glance
| Ownership | Investor-owned utility |
| Services | — |
| Commercial rate | 20.94¢/kWh |
| Retail revenue (2025) | $5,947,000 |
| Electricity sold (2025) | 30,829 MWh |
| Balancing authority | NWMT |
| EIA utility ID | 12825 |
Other utilities in Wyoming
Frequently asked questions
What is NorthWestern Energy's electricity rate?
NorthWestern Energy residential customers pay an average of 13.78¢ per kWh, all charges included (EIA-861M monthly utility data, 12 months ending 2026-07). That's 2% below the Wyoming average of 14.01¢ and 23% below the U.S. average.
What is the average NorthWestern Energy electric bill?
About $110 a month. The average NorthWestern Energy home uses 796 kWh a month. At 1,000 kWh the bill would be about $138.
How many customers does NorthWestern Energy have?
NorthWestern Energy serves 299 residential customers and 692 customers in total in Wyoming, across 2 counties.
Sources: EIA-861 2025 and EIA-861M (through July 2026), OpenEI URDB, ORNL EAGLE-I, U.S. Census. Methodology. Spot an error? Rates change often, so confirm with NorthWestern Energy before making decisions.