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News
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LCG, August 15, 2025--Xcel Energy announced that the company received state approval yesterday from the Minnesota Public Utilities Commission to extend operations of the Prairie Island nuclear plant through the early 2050s. Prairie Island has two units that have a combined generating capacity of 1,100 MW. The units’ current operating licenses expire in 2033 and 2034.
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LCG, August 7, 2025--Portland General Electric (PGE) today announced the completion of three, four-hour lithium-ion utility-scale battery energy storage systems (BESS) in Oregon, adding 475 MW and more than 1.9 GWh of dispatchable capacity to serve the Portland metro area. Each of these BESS facilities can deliver power during peak demand or when other electric generating facilities are limited, which improves system flexibility, reliability and costs.
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Industry News
Dynegy Announces Plan to Retire Coal-Fired Power Plant in Illinois
LCG, November 6, 2015-Dynegy Inc. announced Wednesday its plan to retire its 465-MW Wood River Power Station in Alton, Illinois in mid-2016. Dynegy stated that the retirement of the two, coal-fired units is driven by plant economics that result from a poorly designed wholesale capacity market in Central and Southern Illinois that does not allow competitive generators to recover costs.
Dynegy plans to file a retirement notice with Midcontinent Independent System Operator, Inc. (MISO) by next month. Dynegy anticipates that MISO will complete its reliability review in the first quarter of next year. If MISO determines the plant is not needed for reliability, Dynegy expects the retirement to occur in mid-2016. The two units entered commercial operation in 1954 and 1964.
Dynegy believes the MISO capacity auction is flawed because it allows regulated utilities from surrounding states to bid their capacity into the auction at little to no cost, as these regulated utilities receive higher guaranteed compensation from their respective state-regulated markets. In contrast, Central and Southern Illinois market participants operate in a deregulated, competitive market and must rely on the MISO capacity auction for fair compensation. Combining generating assets from these two different regulatory regimes into the same capacity auction puts all generating units in Central and Southern Illinois at financial risk, regardless of fuel type.
Dynegy's president and CEO stated, "Dynegy is committed to working with MISO, the state of Illinois, Union leadership and all stakeholders to redesign the MISO capacity market to one that properly functions and fairly compensates competitive generators or alternatively, to transition Illinois fully into PJM. Otherwise, all generating plants in the MISO portion of Illinois will face a future of financial challenge. If Wood River was located in the PJM market, like Dynegy's Northern Illinois generating units, it is unlikely this retirement would be occurring."
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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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