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Dynegy Zimmer, LLC took the 900-megawatt (MW) William H Zimmer 01A (HP) and 494-MW William H Zimmer 01B (LP) units offline, today, March 9, at its William H Zimmer Power Station in Ohio due to an issue with electric controls. The cause is under investigation, and this event is expected to end March 12.
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Site-wide Scheduled Maintenance for September 27, 2025 from 12 P.M. to 6 P.M. CDT. Expect intermittent web site availability during this time period.
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