{"schema_version":"secwatch.filing_event.v1","accession":"0001466593-23-000089","form_type":"8-K","ticker":"OTTR","cik":"0001466593","company_name":"Otter Tail Corp","filed_at":"2023-03-31T23:59:59+00:00","discovered_at":"2026-05-14T18:03:45.111981+00:00","generated_at":"2026-06-17T07:46:05.670152+00:00","sec_items":["8.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"Otter Tail Power files supplemental IRP; plans 200 MW solar, 200 MW wind, potential Coyote Station exit","bullets":["Plans to add ~200 MW solar (2027-2028) and ~200 MW wind (2029) plus LNG storage at Astoria Station in 2026.","Repowering four existing wind facilities in 2024-2025; seeks to create regulatory asset for potential Coyote Station exit.","Potential withdrawal from 35% ownership in Coyote Station coal plant if major non-routine capital needed; estimated costs $68.5M at end-2028.","Filing updates 2022 IRP; cites MISO reserve margins, Inflation Reduction Act tax credits, Minnesota Clean Energy Bill, market volatility."],"urls":{"canonical":"https://secwatch.observer/filing/0001466593-23-000089","json":"https://secwatch.observer/filing/0001466593-23-000089.json","markdown":"https://secwatch.observer/filing/0001466593-23-000089.md","text":"https://secwatch.observer/filing/0001466593-23-000089.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1466593/000146659323000089/0001466593-23-000089-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1466593/000146659323000089/ottr-20230331.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-17T07:46:05.670152+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"}