{"schema_version":"secwatch.filing_event.v1","accession":"0001628280-24-021087","form_type":"8-K","ticker":"GWH","cik":"0001819438","company_name":"ESS Tech, Inc.","filed_at":"2024-05-07T23:59:59+00:00","discovered_at":"2026-05-14T18:03:20.348240+00:00","generated_at":"2026-06-02T19:43:30.141199+00:00","sec_items":["2.02","9.01"],"event_type":"earnings","sentiment":"positive","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"ESS Tech Q1 revenue $2.7M, seven-fold YoY; cash >$89M; orders second automation line","bullets":["Q1 revenue $2.7M (seven-fold YoY increase); cash >$89M, expected into H1 2025.","Second automation line ordered: 600 MWh/yr (40% more), 50% lower cost/MWh, operational 1H 2025.","Completed first Energy Center testing for Portland General Electric; second EC build starts early Q3 2024.","Partnered with Sapele Power to supply long-duration energy storage solutions in Africa.","Energy Warehouse commissioned at Schiphol Airport and installed at Burbank Water and Power."],"urls":{"canonical":"https://secwatch.observer/filing/0001628280-24-021087","json":"https://secwatch.observer/filing/0001628280-24-021087.json","markdown":"https://secwatch.observer/filing/0001628280-24-021087.md","text":"https://secwatch.observer/filing/0001628280-24-021087.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1819438/000162828024021087/0001628280-24-021087-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1819438/000162828024021087/wk-20240507.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-02T19:43:30.141199+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":[{"claim_id":"96602be0b66c75a46291e1deb311aa7195cba53b","claim":"ESS Tech, Inc. reported first quarter ended March 31, 2024 results: revenue 2.7 Million.","evidence_excerpt":"ESS Tech, Inc. Announces First Quarter 2024 Financial Results Q1 Revenue of $2.7 Million","evidence_source":"SEC 8-K Item 2.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1819438/000162828024021087/0001628280-24-021087-index.htm","confidence":0.95,"family_label":"Earnings Releases","details":[{"label":"Period","value":"first quarter ended March 31, 2024"},{"label":"Revenue","value":"2.7 Million"},{"label":"Result","value":"reported results"}],"fact_type":"earnings_release"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}