Millcreek Power Generation - 80 MW Gas Power Plant in St. George, Utah

Millcreek Power Generation is a gas-fired power plant located in St. George, Utah, United States. With a capacity of 80 MW, it is a medium-scale facility that serves the local community. The plant is owned by the City of St George and is currently operational. The facility operates under the regulatory framework of the US Environmental Protection Agency (EPA), including the Clean Air Act (CAA) and its associated programs such as the National Ambient Air Quality Standards (NAAQS) and the Acid Rain Program. As a gas-fired plant, it benefits from lower emissions of sulfur dioxide (SO2) and particulate matter compared to coal-fired plants, but still requires compliance with emission limits for nitrogen oxides (NOx) and carbon monoxide (CO). The plant plays a key role in providing reliable electricity to the St. George area, supporting residential and commercial demand. Its location in the southwestern United States, a region with growing energy needs, underscores its importance in the local power grid. The use of natural gas as a fuel aligns with broader trends in the US power sector toward cleaner energy sources.

The plant's gas-fired technology results in lower CO2 emissions per MWh compared to coal, but still contributes to greenhouse gas emissions. Its location in a semi-arid region with growing population centers means that air quality management is important. The facility's proximity to residential areas may require attention to NOx and other local pollutants. Compliance with EPA's Cross-State Air Pollution Rule (CSAPR) and regional haze regulations is relevant.