---
schema_version: "secwatch.filing_event.v1"
accession: "0000354707-23-000098"
form_type: "8-K"
ticker: "HE"
cik: "0000354707"
company_name: "HAWAIIAN ELECTRIC INDUSTRIES INC"
filed_at: "2023-12-11T23:59:59+00:00"
generated_at: "2026-06-07T15:16:11.390339+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Hawaiian Electric's Waiau repower project (253 MW) selected for next stage of procurement

## Summary
- Proposal to replace six aging fossil-fuel generators at Waiau (253 MW) selected to advance in PUC procurement for firm renewable generation on Oʻahu.
- Six combustion turbines, similar to jet engines, will replace units built between 1947-1968; initial fuel is biodiesel, potential for renewable gas/hydrogen.
- First two units (Waiau Units 3 and 4, aged 76 and 73) to retire 2024; replacement expected in-service by 2029; all six units online by 2033.
- Project still requires final PUC approval; cost details to be filed later; expects significant savings over 30 years vs. continuing to run aging units.

## SEC filing metadata
- accession: 0000354707-23-000098
- form_type: 8-K
- ticker: HE
- cik: 0000354707
- company_name: HAWAIIAN ELECTRIC INDUSTRIES INC
- filed_at: 2023-12-11T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/354707/000035470723000098/0000354707-23-000098-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/46207/000035470723000098/he-20231211.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000354707-23-000098
- JSON: https://secwatch.observer/filing/0000354707-23-000098.json
- Plain text: https://secwatch.observer/filing/0000354707-23-000098.txt

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