United States of America

Interstate— 138.6 MW Natural Gas

GasVerified: Jul 2026

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Interstate power generation facility, located in Springfield, Illinois, ranks as the 1759th largest power generation facility in the United States and holds a capacity of 138.6 MW. This gas-fired plant operates within a vast network of 10,047 power generation facilities across the country, where natural gas dominates the fuel landscape. Despite its relatively modest size, Interstate plays a crucial role in bolstering the local energy supply, contributing to the overall capacity of 1,386,385 MW, with gas being one of the leading sources of electricity generation. Utilizing natural gas as its primary fuel, Interstate employs advanced combustion technologies that enhance efficiency and reduce emissions compared to traditional coal-fired plants. This facility not only supplies vital energy to the regional grid but also exemplifies the ongoing transition in the U.S. energy sector towards cleaner and more sustainable practices. Its operational efficiency is crucial in a market where the average gas plant capacity is significantly higher, providing a reliable energy source for local consumers. Interstate's geographical positioning is notable, as it exists within a cluster of larger coal-fired plants, such as Kincaid Generation LLC (1319 MW) and Dallman (617.8 MW). This juxtaposition highlights the ongoing energy transition, where natural gas facilities are increasingly seen as a bridge towards more renewable energy solutions. The local energy landscape is characterized by a diverse mix of fuel types, including wind and oil, with plants like the Hilltopper Wind Project (185 MW) also contributing to the grid. Operated by the City of Springfield since its commissioning in 1997, Interstate underscores the importance of local governance in energy management and infrastructure development. As the U.S. continues to face challenges related to energy security and climate change, Interstate's role in providing cleaner energy solutions becomes increasingly significant. Looking ahead, this facility is positioned to adapt to emerging technologies and policies aimed at reducing greenhouse gas emissions, contributing to a more sustainable energy future while supporting local economic growth.