---
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"
generated_at: "2026-06-02T19:43:30.141199+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# ESS Tech Q1 revenue $2.7M, seven-fold YoY; cash >$89M; orders second automation line

## Summary
- 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.

## SEC filing metadata
- 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
- event_type: earnings
- sentiment: positive
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 2.02, 9.01
- 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

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-24-021087
- JSON: https://secwatch.observer/filing/0001628280-24-021087.json
- Plain text: https://secwatch.observer/filing/0001628280-24-021087.txt

## Key facts
- Earnings Releases
  ESS Tech, Inc. reported first quarter ended March 31, 2024 results: revenue 2.7 Million.
  - Period: first quarter ended March 31, 2024
  - Revenue: 2.7 Million
  - Result: reported results
  source text: ESS Tech, Inc. Announces First Quarter 2024 Financial Results Q1 Revenue of $2.7 Million
  evidence_url: https://www.sec.gov/Archives/edgar/data/1819438/000162828024021087/0001628280-24-021087-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.