Electricity rates in Boulder, MT
Boulder (1,207 people, Jefferson County) is served by NorthWestern Energy. Homes on NorthWestern Energy pay about 15.71¢/kWh, 14% more than the Montana average.
What things cost to run in Boulder
Popular — tap to add, then add more to compare:
Add as many devices as you like to compare them side by side. Search again to add another, or use Duplicate to compare two settings.
Electric companies serving Boulder
| Utility | Type | Rate | Avg bill | Homes (statewide) | Outage min |
|---|---|---|---|---|---|
| NorthWestern Energy | Investor-owned utility | 15.71¢ | $111 | 334K | 125 |
Power outages in Jefferson County right now
Checking live outages…
Outage history in Jefferson County
| 2024 | 2025 | |
|---|---|---|
| Outage minutes per customer | 528 | 1,254 |
| Days with outages | 36 | 19 |
| Most customers out at once | 2,681 (50.4%) | 6,022 (113.2%) |
| Worst day | 2024-05-14 | 2025-12-17 |
Outage minutes by month, 2025
More outage time than 2024 (528 min). Data: ORNL EAGLE-I county outage snapshots every 15 minutes, covering all utilities in the county.
Nearby cities
- Clancy 15.7¢
- Montana City 15.7¢
- Helena West Side 15.7¢
- Helena 15.7¢
- Whitehall 15.7¢
- Butte 15.7¢
- East Helena 15.7¢
- Helena Valley Southeast 15.7¢
- Townsend 15.7¢
- Helena Valley West Central 15.7¢
ZIP codes: 59632
Frequently asked questions
What is the electricity rate in Boulder?
Most homes in Boulder get power from NorthWestern Energy, where residential customers pay an average of 15.71¢/kWh including all charges. The Montana average is 13.84¢ and the U.S. average 17.99¢.
What is the average electric bill in Boulder?
About $111 a month, based on 707 kWh a month (the average for NorthWestern Energy customers) at 15.71¢/kWh. Homes with electric heat, pools or EVs pay more.
Who is the electric company in Boulder, MT?
NorthWestern Energy serves Boulder.
How often does the power go out in Boulder?
In 2025, customers in Jefferson County averaged 20 hr 54 min without power. Outages hit 19 days of the year, and the worst day was 2025-12-17, when 6,022 customers (113.2%) were out. Source: ORNL EAGLE-I.