Brownfield Datacenter Sites in Hawaii
At a glance
Previously developed land with real or perceived environmental contamination. Brownfields trade remediation overhead for existing utility hookups, infill locations near fiber, and redevelopment incentives.
Top brownfield sites in Hawaii
| Site | Type | County | Former use | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| Honolulu | Brownfield | Honolulu County | oil | — | 104 MW | 4.3 yrs | 53.8 |
| Helemano Substation DG | Brownfield | Honolulu County | oil | — | 5 MW | 4.3 yrs | 49.3 |
| Kalaheo Hydro | Brownfield | Kauai County | hydro | — | 1 MW | 4.3 yrs | 49.0 |
| Port Allen (HI) | Brownfield | Kauai County | oil | — | 10 MW | 4.3 yrs | 48.3 |
| Gay Robinson | Brownfield | Kauai County | biomass | — | 4 MW | 4.3 yrs | 48.3 |
| Shipman | Brownfield | Hawaii County | oil | — | 19 MW | 4.3 yrs | 43.7 |
How does Hawaii compare with other states for brownfield sites?
With 6 sites, Hawaii ranks 35th of the 49 states that have any brownfield candidate sites. California leads with 103. Nationally, brownfield sites average 57.5/100 DC Readiness, above the 53.0 average across all site types. Across every site type, Hawaii averages 50.0, the 48th-highest of 52 states, and its candidate sites face an average interconnection-queue wait of 4.3 years.
Where are the highest-scoring brownfield sites in Hawaii?
The top 6 range from 53.8 to 43.7 on the 0–100 DC Readiness Score. They are concentrated in Kauai County (3) and Honolulu County (2).
County pages: Kauai County · Honolulu County · Hawaii County
What power, fiber and flood exposure do these brownfield sites have?
Their counties have a median of 3 fixed fiber broadband providers in FCC data. The median distance to the nearest internet exchange facility is 163 km. The median interconnection-queue wait in their markets is 4.3 years. 1 of the 6 with a mapped FEMA flood zone sits in a high-risk (A or V) zone.
Frequently asked questions
How many brownfield datacenter sites are in Hawaii?
GridCensus catalogs 6 brownfield datacenter candidate sites in Hawaii, 0.8% of the national total for this type (35th of 49 states).
What is a brownfield datacenter site?
Previously developed land with real or perceived environmental contamination. Brownfields trade remediation overhead for existing utility hookups, infill locations near fiber, and redevelopment incentives.
What is the best brownfield datacenter site in Hawaii?
By DC Readiness Score, Honolulu in Honolulu County ranks first at 53.8/100, followed by Helemano Substation DG in Honolulu County at 49.3.
Which Hawaii counties have the best brownfield sites?
The top 6 brownfield sites in Hawaii are concentrated in Kauai County (3) and Honolulu County (2).
How does Hawaii score for datacenters overall?
All 252 scored sites in Hawaii average 50.0/100 DC Readiness, the 48th-highest of 52 states, against a national average of 53.0.
More on brownfield sites and Hawaii
Brownfield sites in other states
- Brownfield sites in California· 103 sites
- Brownfield sites in New Jersey· 52 sites
- Brownfield sites in New York· 48 sites
- Brownfield sites in Massachusetts· 44 sites
- Brownfield sites in Iowa· 38 sites
- Brownfield sites in Illinois· 33 sites
- Brownfield sites in Texas· 30 sites
- Brownfield sites in Ohio· 29 sites
Dataset updated . Screening estimates derived from public data sources.
About this data
Source: GridCensus composite of HIFLD transmission and substation data, EIA, FEMA National Risk Index, FCC broadband data, PeeringDB and ISO interconnection queues, as published November 13, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “Brownfield datacenter sites in Hawaii”, https://gridcensus.com/site-types/brownfield/hawaii (data as of November 13, 2026).
Go deeper than the public screen
Every site and score for Brownfield sites in Hawaii is free to browse. Pro adds Watchtower on 25 sites, alerts when new candidate sites, datacenters or interconnection-queue requests appear in your markets, score and capacity history, and CSV export. Enterprise adds team seats, weekly data files for all 147,272 sites, the REST API and an MCP server for AI tools.