Wygen Power Plant (I-IV) is a 295MW coal fired power project. It is located in Wyoming, the US. The project is currently active. It has been developed in multiple phases. Post completion of construction, the project got commissioned in January 2003.

Project Type Total Capacity (MW) Active Capacity (MW) Pipeline Capacity (MW) Project Status Project Location Project Developer
Thermal 295 295 Active Wyoming, the US Black Hills Energy; City of Gillette; Montana-Dakota Utilities; Municipal Energy Agency of Nebraska


The project is developed by Black Hills Energy, City of Gillette, Montana-Dakota Utilities and Municipal Energy Agency of Nebraska. These companies also have ownership stakes in the project.

It is a Steam Turbine power plant. The power plant run on dual-fuel. The primary fuel being used to power the plant is sub-bituminous. In case of shortage of sub-bituminous the plant can also run on Natural Gas.

Development Status

The project got commissioned in January 2003.

Power Purchase Agreement

The power generated from the Wygen Power Plant (I-IV) (Wygen Power Plant (I-IV) Unit I) is sold to Black Hills Energy under a power purchase agreement with a contracted capacity is 60MW.

Contractors Involved

Wygen Power Plant (I-IV) (Wygen Power Plant (I-IV) Unit II) is equipped with GE Power steam turbine. The phase consists of 1 steam turbine with 95MW nameplate capacity.

GE Power supplied electric generator for the Wygen Power Plant (I-IV) (Wygen Power Plant (I-IV) Unit II).

Babcock & Wilcox Enterprises supplied steam boiler for the Wygen Power Plant (I-IV) (Wygen Power Plant (I-IV) Unit II).

Babcock & Wilcox Enterprises supplied steam boiler for the Wygen Power Plant (I-IV) (Wygen Power Plant (I-IV) Unit III).

About Black Hills Energy

Black Hills Energy (Black Hills), a subsidiary of Black Hills Corp, is a power company that generates, transmits and distributes electricity. The company generates electricity through coal, gas, and oil resources. Its services include electricity and natural gas transmission and distribution, billing and payment, outage reporting, tree planting and trimming, landlord services, energy audits, capital credits and electrical safety. Black Hills also provides energy-efficiency programs includes rebates and incentives, energy management, energy conservation tips, technical services, and others. It also offers rebates and energy efficiency programs to manage energy usage. The company serves residential, commercial and industrial customers in Iowa, Colorado, Montana, Kansas, South Dakota, Nebraska and Wyoming, the US. Black Hills is headquartered in Rapid City, South Dakota, the US.

About Montana-Dakota Utilities

Montana-Dakota Utilities Co (MDU), a subsidiary of MDU Resources Group Inc, is a power company that offers electric and natural gas distribution service. The company’s services include residential, commercial services, trade ally program, preferred service by home serve and obtaining utility service. It provides customers services such as online account, payment options, start services, stop and transfer and bill assistance services. MDU offers electric load response program to electric commercial and industrial customers. The company provides demand response resources program. It serves in Montana, North Dakota, South Dakota and Wyoming. MDU is headquartered in Bismarck, North Dakota, the US.

About Municipal Energy Agency of Nebraska

Municipal Energy Agency of Nebraska (MEAN) is a not-for-profit wholesale electricity supply organization of NMPP Energy. MEAN generates electricity from coal, natural gas, hydro, nuclear, landfill gas, and renewable sources. The company also promotes power generation by members from natural gas and oil sources. MEAN operates in regional power markets such as Southwest Power Pool, Mid Continent Independent System Operator, and western bilateral market through Western Electricity Coordinating Council, and North American Electric Reliability Corporation regional entities. It also offers utility and energy related services, including business software support, customer assistance, energy audits, community development assistance, and cost-of-service/rate design studies. The company has operations in Iowa, Nebraska, Colorado, and Wyoming states. MEAN is headquartered in Lincoln, Nebraska, the US.


All power projects included in this report are drawn from GlobalData’s Power Intelligence Center. The information regarding the project parameters is sourced through secondary information sources such as electric utilities, equipment manufacturers, developers, project proponent’s – news, deals and financial reporting, regulatory body, associations, government planning reports and publications. Wherever needed the information is further validated through primary from various stakeholders across the power value chain and professionals from leading players within the power sector.