New Ulm Diesel Power Plant | New Ulm, Minnesota, USA

New Ulm is a diesel power plant located in New Ulm, Minnesota, United States, with a capacity of 78.5 megawatts. It is owned and operated by the New Ulm Public Utilities Commission, a municipal utility serving the city and surrounding area. The plant is currently operational and plays a role in the local power generation mix. The plant uses oil as its primary fuel, which is typical for diesel-fired peaking or backup power plants. In the United States, such facilities are subject to the Clean Air Act (CAA) regulations, including National Ambient Air Quality Standards (NAAQS) and emission limits for sulfur dioxide (SO2) and nitrogen oxides (NOx). The plant's capacity places it in the small-to-medium scale for diesel power generation. As a municipal utility asset, New Ulm provides grid stability and peak load support for the region. Its operation contributes to the local energy security, though diesel generation generally has a higher carbon footprint compared to natural gas or renewables. The plant's environmental impact is managed through compliance with state and federal emission standards.

The plant's use of oil as fuel results in higher CO2, SOx, and NOx emissions per MWh compared to natural gas or renewable sources. Its location in a populated area may raise local air quality concerns, though regulatory compliance under the Clean Air Act helps mitigate impacts. The 78.5 MW capacity suggests it operates primarily during peak demand or emergencies, limiting its overall environmental footprint.