{"schema_version":"secwatch.filing_event.v1","accession":"0000950170-24-133114","form_type":"8-K","ticker":"MGEE","cik":"0001161728","company_name":"MGE ENERGY INC","filed_at":"2024-12-04T23:59:59+00:00","discovered_at":"2026-05-14T18:03:07.813074+00:00","generated_at":"2026-05-29T08:13:00.578002+00:00","sec_items":["7.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"MGE Energy, partners delay Columbia coal suspension to 2029, explore gas conversion","bullets":["Coal operations at Columbia Energy Center now set to end in 2029, shifted from 2026.","Partners will explore converting at least one unit to natural gas to support reliability and growth.","MGE holds a 19% ownership interest in the jointly-owned plant in Portage, Wisconsin.","Shift responds to MISO accreditation changes and expected load growth; carbon goals unchanged.","Columbia Energy Storage Project (18 MW, 10-hr storage) under regulatory review, operational by end 2027."],"urls":{"canonical":"https://secwatch.observer/filing/0000950170-24-133114","json":"https://secwatch.observer/filing/0000950170-24-133114.json","markdown":"https://secwatch.observer/filing/0000950170-24-133114.md","text":"https://secwatch.observer/filing/0000950170-24-133114.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1161728/000095017024133114/0000950170-24-133114-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/61339/000095017024133114/mgee-20241204.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-29T08:13:00.578002+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}