St. Clair Gas Power Plant: 577 MW Facility in Ontario, Canada

St. Clair is a natural gas-fired power plant located in Ontario, Canada, with a capacity of 577 megawatts. The facility is owned and operated by St. Clair Power LP and plays a key role in meeting the region's electricity demand. As a gas power plant, it contributes to the province's energy mix alongside nuclear, hydro, and renewables. The plant operates under Canada's federal and provincial environmental regulations, including the Canadian Environmental Protection Act and Ontario's emissions standards for nitrogen oxides and sulfur dioxide. Natural gas combined-cycle technology, typical for modern plants of this scale, offers higher efficiency and lower emissions compared to older coal-fired units. The 577 MW capacity places it in the medium-to-large range for gas plants in Canada. St. Clair's operational status as an active facility ensures reliable power supply to Ontario's grid. Its location in an industrial region supports local energy needs while adhering to regulatory frameworks aimed at reducing greenhouse gas emissions. The plant's use of natural gas aligns with Canada's transition toward cleaner energy sources.

The plant's natural gas fuel source results in lower carbon dioxide emissions per megawatt-hour compared to coal, but still contributes to greenhouse gas emissions. Its location in Ontario, a province with stringent air quality regulations, requires compliance with emission limits for NOx and SOx. The facility's proximity to populated areas necessitates careful monitoring of local air quality impacts. Modern gas plants like St. Clair typically employ advanced combustion controls and selective catalytic reduction to minimize environmental footprint.