Planned battery storage projects in Hawaii
What EIA-860M's Planned sheet says is coming in Hawaii: 6 battery storage projects totalling 278 MW, each with the in-service year its developer reported and the construction status EIA records. A planned project is not a built one.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Planned projects
- 6
- 9 generating units
- Proposed capacity
- 278 MW
- Earliest in-service year
- 2026
- Latest in-service year
- 2030
Map of planned battery storage projects in Hawaii
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List of planned battery storage projects in Hawaii
| Keamuku2 technologies | AES Clean Energy | Hawaii | 172 | 2 | 2030 | Regulatory approvals pending. Not under construction |
| AES Waiawa Phase 2 Solar2 technologies | AES Distributed Energy | Honolulu | 60 | 2 | 2026 | Under construction |
| AES Mountain View Solar2 technologies | AES Distributed Energy | Honolulu | 14 | 2 | 2026 | Under construction |
| KRS I Anahola Solar HybridBatteries | Kauai Island Utility Cooperative | Kauai | 12 | 1 | 2027 | Planned for installation |
| KRS II Koloa SolarBatteries | Kauai Island Utility Cooperative | Kauai | 12 | 1 | 2027 | Planned for installation |
| Hamakua Energy PlantBatteries | Hamakua Energy LP | Hawaii | 7.5 | 1 | 2030 | Planned for installation |
Where they are in the build
- Planned for installation3
- Under construction2
- Regulatory approvals pending. Not under construction1
Planned battery storage projects in Hawaii: FAQ
- How many battery storage projects are planned in Hawaii?
- 6, for 278 MW of nameplate capacity. These are generators developers have reported to EIA, not generators that exist.
- What do the status letters mean?
- EIA files each planned generator under a status: regulatory approvals pending, under construction at or below half complete, under construction more than half complete, construction complete but not yet in commercial operation, or planned but not yet started. Each row shows its own.
- Do these projects always get built?
- No. EIA keeps a separate Canceled or Postponed sheet, and projects move between the sheets month to month. This page is the Planned sheet for 2026-07 and nothing more.