OGE · 10-Q · 2026Q1 · Full report
Mercury & Air Toxics Standards
OGE ENERGY CORP. · 2026-04-29 · Importance 41 · Surprise 60
The EPA released a final revised Mercury and Air Toxics Standards in April 2024 with an initial compliance date of July 2027; the EPA extended the compliance deadline to July 8, 2029 in April 2025. The EPA later proposed repeal in June 2025 and finalized that repeal in February 2026, removing the 2024 revised emission limit and monitoring requirements. Litigation challenging the repeal was filed in March 2026, and OG&E noted potential impacts remain unknown pending further agency or court action. OG&E is monitoring developments to evaluate any material implications for its facilities.
Key facts
- In April 2024 the EPA released final revised Mercury and Air Toxics Standards with a compliance date in July 2027; the EPA extended the compliance deadline to July 8, 2029 in April 2025, then proposed repeal in June 2025 and finalized repeal in February 2026 removing the revised emission limit and monitoring requirements.
Impact estimates
| metric | direction | stage | expected | basis |
|---|---|---|---|---|
| operating_income | positive | realized | — | In April 2024 the EPA released final revised Mercury and Air Toxics Standards with a compliance date in July 2027; the EPA extended the… |