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Datacenter Sites in Honolulu County, Hawaii

Honolulu County has 141 scored datacenter candidate sites averaging 51.8/100 DC Readiness, with a catalogued aggregate of 1,509 MW. FEMA rates local natural-hazard risk as "Relatively Low". The county has a datacenter tax incentive on record.

At a glance

Honolulu County, Hawaii has 141 scored datacenter candidate sites averaging 51.8/100 DC Readiness, roughly in line with the Hawaii average of 50.0. It ranks 1st of 4 Hawaii counties by number of sites and 1st by average score. The top-scoring site is CEIP at 62.8/100.

141
Candidate sites
51.8/100
Avg DC Readiness
1,509 MW
Catalogued capacity
theoretical aggregate
Relatively Low
Hazard rating
◆ Loading map…
≥ 7560–7540–60≤ 40
Top 25 in Honolulu County

Site-selection context for Honolulu County

Yestax_credits
Datacenter tax incentive
37.03¢/kWh
Commercial electricity
32.82¢/kWh
Industrial electricity
7
Fiber providers
Low
Water stress
$29,887
Land price / acre
4,400
Cooling degree days
0
Heating degree days
77°F
Mean annual temp

Incentive detail: Enterprise Zone tax credits; limited applicability.

How does Honolulu County compare with other counties in Hawaii?

By number of scored sites, Honolulu County ranks 1st of the 4 Hawaii counties with a county page, holding 56% of the state's 252 sites. Its average DC Readiness of 51.8/100 ranks 1st in the state and is roughly in line with the national average of 53.0. Nationally it has the 189th-largest site inventory of 2,964 counties with five or more sites. 0 sites score 70 or higher and 14 score 55 or higher.

What types of datacenter sites are in Honolulu County?

Industrial sites are the most common (103, 73% of the county's inventory), followed by former mine (15) and substation-adjacent (14). Site type reflects how the parcel was identified — next to a substation, on a former mine or brownfield, on industrial or federal excess land — and is scored on the same 14 factors either way.

What are power cost, hazard, water and fiber conditions in Honolulu County?

Industrial electricity averages 32.82¢/kWh and commercial 37.03¢/kWh. FEMA's National Risk Index rates the county "Relatively Low" (20). WRI water stress is low. 7 fiber providers report service in the county. The climate runs 4,400 cooling degree days a year with a mean temperature of 77°F. Land is valued around $29,887 an acre.

By site type

Top datacenter sites in Honolulu County

Top datacenter sites in Honolulu County
SiteTypeVoltageCapacityQueue waitScore
CEIPSubstation-Adjacent138 kV100 MW4.3 yrs62.8
KEWALOSubstation-Adjacent138 kV100 MW4.3 yrs62.7
MAKALAPASubstation-Adjacent138 kV100 MW4.3 yrs62.5
AESSubstation-Adjacent138 kV100 MW4.3 yrs62.5
KAHE 1Substation-Adjacent138 kV100 MW4.3 yrs62.2
WAHIAWASubstation-Adjacent138 kV100 MW4.3 yrs61.9
EWA NUISubstation-Adjacent138 kV100 MW4.3 yrs61.4
HAIAWASubstation-Adjacent138 kV100 MW4.3 yrs61.4
UNKNOWN173461Substation-Adjacent138 kV100 MW4.3 yrs61.4
TAP173459Substation-Adjacent138 kV100 MW4.3 yrs61.3
WAIAU 1Substation-Adjacent138 kV100 MW4.3 yrs61.1
PUKELESubstation-Adjacent138 kV100 MW4.3 yrs60.8
KOOLAUSubstation-Adjacent138 kV100 MW4.3 yrs60.7
RISER155668Substation-Adjacent138 kV100 MW4.3 yrs60.7
HonoluluBrownfield—104 MW4.3 yrs53.8
OZ HonoluluGreenfield——4.3 yrs51.8
OZ HonoluluGreenfield——4.3 yrs51.7
CSO Barbers Point HIMilitary BRAC——4.3 yrs51.4
Yung Soon Tajima TrIndustrial——4.3 yrs51.2
State of Hawaii - HDoT - DLNRIndustrial——4.3 yrs51.2
Kuhio Park TerraceIndustrial——4.3 yrs51.2
Kuhio Park TerraceIndustrial——4.3 yrs51.2
Walter S. Takara TrusteeIndustrial——4.3 yrs51.2
Edgar T Dela Cruz, Revocable TrustIndustrial——4.3 yrs51.2
State of Hawaii - DoE (Kalihi Kai Elementary SchooIndustrial——4.3 yrs51.2

Every scored site in Honolulu County

All 141 sites, best first.

Honolulu County datacenter FAQ

How many datacenter sites are in Honolulu County?

141 scored datacenter candidate sites, averaging 51.8/100 DC Readiness. That is the most of 4 Hawaii counties with five or more sites.

What is the highest-scoring datacenter site in Honolulu County?

CEIP scores 62.8/100 DC Readiness, the highest of the 141 scored sites in Honolulu County (a substation-adjacent site).

Does Honolulu County offer datacenter tax incentives?

Enterprise Zone tax credits; limited applicability.

What is the natural-hazard risk in Honolulu County?

FEMA's National Risk Index rates Honolulu County as "Relatively Low" (score 20).

What are industrial electricity rates in Honolulu County?

Average industrial electricity is 32.82¢/kWh and commercial is 37.03¢/kWh in Honolulu County.

More in Hawaii

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 12, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.

Cite as: GridCensus, “Datacenter candidate sites in Honolulu County, Hawaii”, https://gridcensus.com/datacenter-sites/hawaii/honolulu-county (data as of November 12, 2026).

Dataset updated . Screening estimates derived from public data sources.

Go deeper than the public screen

Every site and score for Honolulu County, 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.

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