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News
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LCG, February 2, 2026--Ontario Power Generation (OPG) announced today that construction on the four-unit Darlington Refurbishment project is now complete. Station staff are completing final testing, and the last unit is expected to return to service in the coming weeks. OPG stated that the overall project is currently four months ahead of schedule and $150 million under budget.
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LCG, January 30, 2026--The North American Electric Reliability Corporation (NERC) yesterday issued its 2025 Long-Term Reliability Assessment (LTRA) and infographic that spotlight intensifying resource adequacy risks throughout the North American bulk power system (BPS) over the next 10 years.
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Industry News
Exelon to Shut Down Three Mile Island by September 30, 2019
LCG, May 10, 2019--Exelon Generation announced Wednesday that Three Mile Island Generating Station Unit 1 (TMI) will shut down by September 30, 2019. The Nuclear Regulatory Commission (NRC) had approved back in 2009 a 20-year extension for the nuclear energy facility through 2034.
Two years ago, Exelon Generation announced that the station, with an electric generating capacity of 837 MW, would prematurely shut down, absent policy reform, as a result of economic challenges and market flaws that fail to recognize the environmental and resiliency benefits from TMI and other zero-carbon nuclear energy facilities. Now, with only three state legislative session days remaining in May and no action taken to advance House Bill 11 or Senate Bill 510, Exelon believes no state policy solution will be enacted before June 1, in time to reverse the premature retirement of the plant.
Exelon's Senior Vice President and Chief Nuclear officer stated, "Today is a difficult day for our employees, who were hopeful that state policymakers would support valuing carbon-free nuclear energy the same way they value other forms of clean energy in time to save TMI from a premature closure."
"Although we see strong support in Harrisburg and throughout Pennsylvania to reduce carbon emissions and maintain the environmental and economic benefits provided by nuclear energy, we don't see a path forward for policy changes before the June 1 fuel purchasing deadline for TMI," said Exelon's Senior Vice President of Government and Regulatory Affairs and Public Policy. "While TMI will close in September as planned, the state has eight other zero-carbon nuclear units that provide around-the-clock clean energy, avoiding millions of tons of carbon emissions every year. We will continue to work with the legislature and all stakeholders to enact policies that will secure a clean energy future for all Pennsylvanians."
Construction began in 1968, and the pressurized water reactor unit entered into commercial service in 1974. The plant's original 40-year operating license was set to expire in April 2014. In October 2009, the NRC approved a 20-year extension through 2034.
Last month, Exelon Generation filed the federally required Post Shutdown Decommissioning Activities Report detailing plans for TMI after its final shutdown, including transitioning staff in three phases down to 50 full-time employees by 2022. In the filing, Exelon Generation selected "SAFSTOR," one of three decommissioning options for the plant, and outlined a plan to dismantle large components, including the station's cooling towers, beginning in 2074.
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UPLAN-NPM
The Locational Marginal Price Model (LMP) Network Power Model
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UPLAN-ACE
Day Ahead and Real Time Market Simulation
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UPLAN-G
The Gas Procurement and Competitive Analysis System
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PLATO
Database of Plants, Loads, Assets, Transmission...
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