Rockport Coal Fight: AG Rokita's Legal Win Could Cost I&M Ratepayers More Than the Retirement It Prevents

AG Rokita filed July 31 in U.S. District Court for the Southern District of Ohio to block retirement of one coal unit at the 1,750-megawatt Rockport plant (owned by I&M and AEP Enterprises in Spencer County) arguing circumstances have changed and the court should modify the 2007 consent decree. The court has not approved the motion. I&M issued a statement of appreciation without endorsing Rokita's position, and simultaneously has a 1,520-megawatt natural gas replacement filed with the IURC for the same site by 2030.

Here is the detail that did not make the press conference: the 2019 modification to the consent decree explicitly allowed AEP to forgo up to $1 billion in scrubber spending in exchange for committing to the 2028 retirement. If the court modifies the decree without carving out that scrubber waiver, AEP could face renewed obligations on that spending. A court could structure any modification to extend the retirement date without reinstating the scrubber schedule, but that outcome is not guaranteed, and no one at Rokita's press conference mentioned the possibility. Ratepayers need to pressure-test this scenario before treating the litigation as an unambiguous win.

The NIPSCO/Schahfer situation illustrates what forced plant extensions can cost in practice. Following the DOE emergency order requiring NIPSCO to extend Schahfer past its planned retirement, the subsequent FERC cost-allocation proceedings spread repair costs across multiple MISO states, and the plant remained substantially offline through much of 2026 despite those orders. The pattern: a forced extension that produced costs without reliable capacity.

One additional fact worth naming, Rockport runs on Powder River Basin coal from Wyoming, not Indiana coal. The local-economy argument at Rokita's press conference does not directly benefit Indiana's coal mining industry.

Action: If I&M serves your facilities, model both ratepayer cost scenarios (Rokita wins with scrubber obligation reinstated, and the planned 2028 retirement proceeds) before the August 10 memorandum filing date. Do not wait for the court to decide before starting that analysis.