Company: WELPM
Filing Date: 2025-10-31
Form Type: 10-Q
Source: 0000107815-25-000207
Chunk: 68

Company: WISCONSIN ELECTRIC POWER CO
Filing Date: 2025-10-31
Form: 10-Q
Item: Part I, Item 1
Chunk 68
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 not met, so in December 2024 the EPA published a final determination reclassifying the nonattainment areas in Wisconsin to a "serious" classification effective January 16, 2025. The Wisconsin Department of Justice filed a petition in February 2025 for review of the reclassification to "serious."In September 2025, the United States Court of Appeals for the Seventh Circuit granted the State of Wisconsin's motion to stay the reclassification until further notice. This means that Southeast Wisconsin has returned to "moderate" status while the underlying lawsuit proceeds. 

09/30/2025 Form 10-Q22Wisconsin Electric Power Company

A nonattainment status of "serious" could have a material adverse effect on future permitting activities for our facilities in applicable locations, including additional costs associated with more strenuous emission control requirements or the need to purchase additional emission reduction credits.Particulate MatterAll counties within our service territory are in attainment with current 2012 standards for fine PM2.5. Under the former presidential administration's policy review, the EPA concluded that the scientific evidence and information from a December 2020 review of the 2012 standards supported revising the level of the annual standard for the PM2.5 NAAQS to below the current level of 12 µg/m3, while retaining the 24-hour standard of 35 µg/m3. In February 2024, the EPA finalized a rule which lowered the primary (health-based) annual PM2.5 NAAQS to 9 µg/m3. The secondary (welfare-based) PM2.5 standard and 24-hour standards (both primary and secondary) remain unchanged. The EPA has until February 2026 to designate areas as attainment and nonattainment with the new standard. The WDNR will need to draft and submit a SIP for the EPA's approval. A designation of nonattainment status could impact future permitting activities for facilities in applicable locations, including the potential need for improved or new air pollution control equipment. With our planned transition from coal-fired plants to natural gas-fired plants and renewable generating facilities, we do not expect this new standard to have a material impact on our units. In March 2025, the EPA announced plans to reconsider the 2024 PM2.5 NAAQS. See the Federal Deregulatory Actions discussion above for more information regarding potential deregulatory actions regarding this rule. Climate ChangePursuant to the final GHG Power Plant Rule, there are no applicable standards for coal