AI data center sites in Hawaii
4 Hawaii counties scored on transmission, the interconnection queue, power price and tax. Updated October 18, 2026.
Open a county for its queue requests, substations, plants and data centers.
| County | Score | Pipeline | Power price |
|---|---|---|---|
| 21 | 192 MW | 37.6¢/kWh | |
| 9 | 216 MW | 37.6¢/kWh | |
| 7 | 40 MW | 37.6¢/kWh | |
| 5 | 24 MW | 37.6¢/kWh |
Pipeline: active generation and storage requests in the ISO queue, or EIA planned plants where larger (outside the ISOs). Top kV: highest substation voltage. Power price: the state's industrial average. DCs: GPU colocation, mining sites and AI campuses.
What the data shows
The strongest Hawaii counties for a large AI load are Honolulu County (21), Hawaii County (9) and Maui County (7) on the site score. Hawaii ; EIA lists 472 MW of planned generators there, and it has 0 substations at 345 kV and up.
Industrial power averaged 37.6¢/kWh (EIA, July 2026 YTD), against 31.6¢/kWh a year earlier, the 51st lowest of the 50 states and DC. Hawaii has no data center-specific sales tax exemption. We track 0 AI campuses and 0 GPU-ready colocation facilities here.
Top 4 counties in detail
1. Honolulu CountyNot identified
Site score 21 of 100
- Transmission
- 4/25
- Generation pipeline
- 4/20
- Industrial power price
- 0/20
- Existing and retiring plants
- 12/15
- Sales tax exemption
- 0/10
- Data center activity
- 0/10
- Market
- Not identified
- Queue (active)
- 0 MW
- Agreement signed
- 0 MW
- Planned plants (EIA)
- 192 MW
- Top substation
- 138 kV
- Substations 230 kV+
- 0
- Operating plants
- 2.4 GW
- Retired or retiring
- 303 MW
- Industrial power, HI
- 37.6¢/kWh
- Sales tax exemption
- None
Substations, 115 kV and up
- KAHE 2 · 6 lines138 kV
- WAIAU 1 · 6 lines138 kV
- HAIAWA · 5 lines138 kV
- KOOLAU · 5 lines138 kV
- CEIP · 5 lines138 kV
- MAKALAPA · 3 lines138 kV
- AES · 3 lines138 kV
- EWA NUI · 3 lines138 kV
Planned, retiring and retired plants
- AES Hawaii · Coal, retired 2022203 MW
- Puuloa Energy · Other or not stated, planned 2029103 MW
- Waiau · Gas, retired 2024100 MW
- AES Waiawa Phase 2 Solar · Storage, planned 202660 MW
2. Hawaii CountyNot identified
Site score 9 of 100
- Transmission
- 0/25
- Generation pipeline
- 4/20
- Industrial power price
- 0/20
- Existing and retiring plants
- 5/15
- Sales tax exemption
- 0/10
- Data center activity
- 0/10
- Market
- Not identified
- Queue (active)
- 0 MW
- Agreement signed
- 0 MW
- Planned plants (EIA)
- 216 MW
- Top substation
- None found
- Substations 230 kV+
- 0
- Operating plants
- 492 MW
- Retired or retiring
- 0 MW
- Industrial power, HI
- 37.6¢/kWh
- Sales tax exemption
- None
Planned, retiring and retired plants
- Keamuku · Storage, planned 2030172 MW
- Hu Honua Bioenergy Facility · Other or not stated, planned 202736 MW
3. Maui CountyNot identified
Site score 7 of 100
- Transmission
- 0/25
- Generation pipeline
- 1/20
- Industrial power price
- 0/20
- Existing and retiring plants
- 6/15
- Sales tax exemption
- 0/10
- Data center activity
- 0/10
- Market
- Not identified
- Queue (active)
- 0 MW
- Agreement signed
- 0 MW
- Planned plants (EIA)
- 40 MW
- Top substation
- None found
- Substations 230 kV+
- 0
- Operating plants
- 525 MW
- Retired or retiring
- 34 MW
- Industrial power, HI
- 37.6¢/kWh
- Sales tax exemption
- None
Planned, retiring and retired plants
- Kuihelani Phase 2 · Solar, planned 202840 MW
- Kahului · Gas, retiring 202834 MW
4. Kauai CountyNot identified
Site score 5 of 100
- Transmission
- 0/25
- Generation pipeline
- 1/20
- Industrial power price
- 0/20
- Existing and retiring plants
- 4/15
- Sales tax exemption
- 0/10
- Data center activity
- 0/10
- Market
- Not identified
- Queue (active)
- 0 MW
- Agreement signed
- 0 MW
- Planned plants (EIA)
- 24 MW
- Top substation
- None found
- Substations 230 kV+
- 0
- Operating plants
- 280 MW
- Retired or retiring
- 6 MW
- Industrial power, HI
- 37.6¢/kWh
- Sales tax exemption
- None
Data center tax exemption in Hawaii
No data center-specific sales tax exemption found. Hawaii levies a general excise tax rather than a sales tax; a 2026 bill (SB 338) proposed an income tax credit for technology infrastructure renovation, not a sales or excise tax exemption.
Source: -. General information, not tax advice; ask your tax advisor.
How the score works
Six parts out of 100: transmission (25), generation in the queue (20), the state's industrial power price (20), existing and retiring plants (15), sales tax exemption (10) and data center activity (10). The site finder's methodology prints each formula and every source with its date. Markets: n/a.
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Discuss a transaction
Funding a data center or the GPUs going into one in Hawaii? Tell us about the site and the capital you need, and we will come back with the lenders and the structure that fit. Operators raising debt for a cluster can start at gpulenders.com.
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