Illinois energy prices remain near historic highs following the latest capacity auction conducted by the Midcontinent Independent System Operator (MISO). The newest auction results show prices at $400 for a megawatt per day for the summer period, a near record high.
In 2023, capacity prices were just $10 megawatt per day. That figure rose to $30 in 2024 before surging dramatically in 2025, more than 20 times higher than just two years earlier.
These results indicate that rising energy costs are not a temporary spike but part of a continuing trend impacting Illinois families and businesses.
Energy experts point to a reduction in reliable, around-the-clock power generation as a key factor driving higher prices. Over time, Illinois has lost significant baseload capacity, tightening supply and increasing costs.
State energy policies have contributed to this imbalance by forcing plant closures without ensuring adequate replacement generation.
As prices remain elevated, concerns continue to grow about both affordability and long-term grid reliability, particularly during periods of peak demand.
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