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Acquisition and Operation of Avista's Share of Colstrip Power Plant

One of 9,135 projects Taiyo tracks in Montana.

Source: Montana Free Press

Project
Planned

NorthWestern Energy plans to acquire Washington-based utility Avista's share of the 40-year-old coal-fired Colstrip power plant. The acquisition will increase NorthWestern's ownership share and involves an estimated $18 million annual operation and maintenance cost. The utility is proposing a novel accounting mechanism to cover these costs, involving contracts with Big Horn County Electric Coopera

Status
Prospective
Sector
Power Generation (CCGT), Power Transmission
Location
Colstrip, Montana, United States of America
Updated
22 Jul 2026
Source
Montana Free Press

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Project Information

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The project “Acquisition and Operation of Avista's Share of Colstrip Power Plant” is an infrastructure initiative in the Power Generation (CCGT) sector, located in Colstrip, Montana, United States. Taiyo aggregates data on it from Montana Free Press.

Participants

Not available for this record.

Status

Original status

planned

Taiyo status

Prospective

Taiyo last update

2026-07-22

Contact

Not available for this record.

Description

Description

NorthWestern Energy plans to acquire Washington-based utility Avista's share of the 40-year-old coal-fired Colstrip power plant. The acquisition will increase NorthWestern's ownership share and involves an estimated $18 million annual operation and maintenance cost. The utility is proposing a novel accounting mechanism to cover these costs, involving contracts with Big Horn County Electric Cooperative and Energy Keepers for power sales.

Original sector

Energy

Budget

Location

Country

United States of America (USA)

State

Montana

City

Colstrip

Source

Source

Montana Free Press

URL

More Details

Record type

Project

Sector

Power Generation (CCGT), Power Transmission

Article published date

2025-09-22

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