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4.8avg. commissioner years of serviceSource: Advanced Energy United
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10.93ยขavg. price per kWhSource: EIA
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4legislative session length, monthsSource: Legislative Session
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71%residential market share of the largest utilitySource: January 2025, Advanced Energy United
breakdown of market shareUtility Percentage Market Share in Montana
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NorthWestern Energy LLC - (MT)
Market Share71%
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4governor years servedSource: January 2025, Advanced Energy United
Utilities
Montana Utilities
The schedules listed here reflect what is established in statute, rules, or Orders. However, PUCs and utilities sometimes deviate from these schedules. Please check the most recent proceeding by going to the "Important Recurring Proceedings" section for each utility below.
Policy AreaIntegrated Least-Cost Resource Plan
ScheduleUtilities shall file least cost plans with the commission on a two year cycle. In the intermediate year the utility should file any necessary updates to the plan filed the previous year. Schedules for specific utilities are established in regulation.
NorthWestern Energy LLC - (MT)
Ownership TypeInvestor Owned
Balancing AuthorityNorthWestern Energy (NWMT)
NERC Regional EntityWECC
Holding Company
Structure
Owns Generation
Owns Transmission
Share of Residential Customers in MT71%