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Lakefield Junction Station is a state-of-the-art combustion turbine plant. The plant is situated on 150 acres of land near Trimont, Minnesota, and is comprised of six units with a maximum capability of 102 megawatts each.
The peaking plant is capable of generating approximately 488 megawatts of electricity on a hot summer day and 550 megawatts on a cold winter day.
Lakefield Junction Station uses natural gas as its primary fuel; fuel oil as its backup fuel. Natural gas is transported to the plant via Northern Border Pipeline’s high-pressure, underground pipeline. Fuel oil arrives at the plant in tanker trucks.
Lakefield Junction Station is highly automated, and only six skilled operator / technicians are required to operate and maintain the plant. The plant came online in 2001.
The plant uses a simple-cycle combustion turbine process to convert fuel into electricity. A compressor furnishes large quantities of compressed air to a combustor which drives a 3-stage power turbine. The combustion process causes the turbine to rotate, driving both the compressor and a generator. The facility combusts fuel through a high performance, low emission, dry, low-nitrogen oxide combustion process, which allows the plant to operate at high efficiencies with very low emissions.
In late 2004, Lakefield Junction Station received International Organization for Standardization 14001 certification of its environmental management system. As a certified plant, Lakefield Junction Station has an environmental management system in place to continuously evaluate and improve environmental performance.
Location: Martin County, Minnesota
Generating capability: 488 MW (summer)
Fuel source: Natural gas; backup, fuel oil
Turbine generators: Six combustion turbines manufactured by General Electric (6xMS7001EA)
Start of operation: 2001
Project site: 150 acres