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| LaSalle County Nuclear Generating Station | |
|---|---|
| Name | LaSalle County Nuclear Generating Station |
| Country | United States |
| Location | LaSalle County, Illinois |
| Status | Operational |
| Owner | Exelon Corporation |
| Operator | Exelon Generation |
| Reactors | 2 × BWR-4 |
| Capacity | 2,300 MW (approx.) |
| Commissioned | 1982–1983 |
LaSalle County Nuclear Generating Station is a dual-unit nuclear power plant located near Seneca in LaSalle County, Illinois. The facility, owned and operated by Exelon Corporation, supplies baseload electricity to the Midcontinent Independent System Operator grid and plays a role in regional energy policy, regional planning, and infrastructure resilience. The site is sited along the Illinois River and interfaces with state, federal, and international regulatory frameworks.
LaSalle County Nuclear Generating Station sits adjacent to municipal jurisdictions including Seneca, Illinois, Peru, Illinois, and Ottawa, Illinois, and is part of the broader energy landscape of the Midwest United States. The plant occupies property once influenced by transportation corridors such as the Illinois River waterways and the Illinois and Michigan Canal corridor. Its output contributes to power supply managed by entities including the Midcontinent Independent System Operator and affects regional transmission overseen by organizations like the North American Electric Reliability Corporation and the Federal Energy Regulatory Commission. Surrounding infrastructure includes the LaSalle County Airport and state transportation routes connected to the Illinois Department of Transportation. Stakeholders include state officials in the Illinois General Assembly, county authorities, and federal agencies such as the Nuclear Regulatory Commission.
The project originated during the expansion of nuclear generation in the late 20th century that involved firms like Commonwealth Edison and later corporate successors including Exelon Corporation after mergers with PECO Energy and Unicom Corporation. Groundbreaking and construction phases paralleled national programs influenced by events such as the aftermath of the Three Mile Island accident and regulatory changes in the 1970s and 1980s. Licensing, construction, and commissioning involved contractors and suppliers linked to industrial firms like General Electric, Bechtel Corporation, and components procured from vendors participating in the Atoms for Peace era. Public engagement, environmental review, and economic assessments were influenced by policies from the United States Department of Energy and state regulatory hearings before the Illinois Commerce Commission.
The site comprises two boiling water reactors of General Electric design, similar to BWR units deployed at facilities such as Shoreham Nuclear Power Plant and units elsewhere operated by utilities like Entergy and Duke Energy. The reactors are equipped with Mark I/Mark II/Mark III–family components and employ containment, turbine-generator sets, and balance-of-plant systems supplied by original equipment manufacturers with ties to Westinghouse Electric Company and ABB Group histories. On-site systems integrate with grid transformers and switchyards consistent with standards from the Institute of Electrical and Electronics Engineers and interconnection practices aligned with Regional Transmission Organizations such as the Midcontinent Independent System Operator. Mechanical and civil design referenced lessons from earlier projects including the Zion Nuclear Power Station and Dresden Nuclear Power Station.
Operational oversight follows protocols from the Nuclear Regulatory Commission and industry groups including the Institute of Nuclear Power Operations and the Nuclear Energy Institute. The plant’s capacity factor, outage scheduling, and fuel management practices reflect benchmarking against peers like Braidwood Nuclear Generating Station and Byron Nuclear Generating Station. Maintenance, in-service inspection, and uprate projects involved coordination with contractors experienced in outages at facilities such as Palo Verde Nuclear Generating Station and Seabrook Station. Performance metrics interact with regional electricity markets under rules shaped by the Federal Energy Regulatory Commission and state policies from the Illinois Commerce Commission and administrations of governors such as those in the Governor of Illinois office.
Safety culture and incident response are informed by national events including Three Mile Island accident and regulatory frameworks such as directives from the Nuclear Regulatory Commission. The station has undergone inspections, enforcement, and licensing reviews similar to processes applied at Indian Point Energy Center and Pilgrim Nuclear Power Station. Emergency planning coordinates local responders including the LaSalle County Sheriff and state agencies like the Illinois Emergency Management Agency, with federal interface via the Federal Emergency Management Agency. Incident records, corrective actions, and probabilistic risk assessments have been reviewed alongside industry guidance from the Institute of Nuclear Power Operations.
Environmental assessments considered impacts on the Illinois River ecosystem and adjacent habitats including areas linked to the Midewin National Tallgrass Prairie and regional conservation efforts involving the Illinois Department of Natural Resources. Thermal discharge, aquatic ecology, and fishery interactions were monitored per standards influenced by the Environmental Protection Agency and state environmental regulations. Radiological monitoring integrates surveillance consistent with the Environmental Protection Agency, the Nuclear Regulatory Commission, and cooperative programs with academic institutions such as University of Illinois Urbana–Champaign and Illinois State University for environmental sampling and public health liaison.
Ownership transitioned through corporate restructurings that involved firms like Commonwealth Edison and culminated in management by Exelon Corporation, which also operates a fleet including Braidwood Nuclear Generating Station and Byron Nuclear Generating Station. Economic considerations include market participation with the Midcontinent Independent System Operator and interactions with state policy initiatives such as zero-emission credits and legislative actions debated in the Illinois General Assembly. Decommissioning planning follows regulatory models used at sites like Zion Nuclear Power Station and Big Rock Point Nuclear Power Plant, with trust fund management, license termination planning, and stakeholder consultation involving the Nuclear Regulatory Commission and local communities.
Category:Nuclear power stations in Illinois Category:Exelon