Granite Falls 2 Diesel Power Plant, Granite Falls, Minnesota

Granite Falls 2 is a diesel power plant located in Granite Falls, Minnesota, United States. With a capacity of 6 MW, it is a small-scale facility owned by the City of Granite Falls. The plant uses oil as its primary fuel, typical for diesel generators that provide peaking power or emergency backup. The plant operates under the regulatory framework of the U.S. Environmental Protection Agency (EPA), including the Clean Air Act (CAA) and associated programs such as the National Ambient Air Quality Standards (NAAQS) and the Acid Rain Program. As a small diesel facility, it may be subject to emissions limits for sulfur dioxide (SO2), nitrogen oxides (NOx), and particulate matter, though its intermittent operation reduces overall environmental impact. Granite Falls 2 serves the local community by providing reliable power during periods of high demand or grid instability. Its small capacity and oil-fueled design make it a flexible resource for the region's energy mix, complementing larger baseload plants and renewable sources.

The plant's use of oil as fuel results in higher CO2, SO2, and NOx emissions per MWh compared to natural gas or renewable sources. Its location in a small town in Minnesota means it is not in a densely populated area, reducing local air quality concerns. However, as a diesel facility, it may still contribute to local emissions during operation. The plant's age and technology (likely reciprocating engine) are typical for small peaking plants, with limited pollution control equipment.