Ewa Nui Substation DG
BrownfieldHonolulu, Honolulu, Hawaii · Hawaiian Electric Co Inc
Ewa Nui Substation DG is a oil plant in Honolulu, Honolulu, Hawaii, retired 2010-04-01. Retired generation sites are among the most attractive datacenter redevelopment targets: the existing interconnection was sized for roughly 10 MW of generation, so the grid hookup, transmission rights, and often cooling-water access are already in place — collapsing the speed-to-power timeline versus a greenfield build.
Former use & capacity
Grid hookup & remediation
Nearby datacenter candidate sites
Scored candidate sites near Ewa Nui Substation DG, ranked by DC Readiness.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| KEWALO | Substation-Adjacent | HI | Honolulu County | 138 kV | 100 MW | 3.5 yrs | 64.0 |
| KAHE 2 | Substation-Adjacent | HI | Honolulu County | 138 kV | 100 MW | 3.5 yrs | 63.7 |
| EWA NUI | Substation-Adjacent | HI | Honolulu County | 138 kV | 100 MW | 3.5 yrs | 63.3 |
| KALAELOA | Substation-Adjacent | HI | Honolulu County | 138 kV | 100 MW | 3.5 yrs | 63.0 |
| TAP173459 | Substation-Adjacent | HI | Honolulu County | 138 kV | 100 MW | 3.5 yrs | 63.0 |
| WAIAU 1 | Substation-Adjacent | HI | Honolulu County | 138 kV | 100 MW | 3.5 yrs | 62.8 |
| UNKNOWN173458 | Substation-Adjacent | HI | Honolulu County | 138 kV | 100 MW | 3.5 yrs | 62.8 |
| UNKNOWN173461 | Substation-Adjacent | HI | Honolulu County | 138 kV | 100 MW | 3.5 yrs | 62.7 |
Nearby internet exchanges
- DRFortress HNLHonolulu, HI · 27 networks
- AlohaNAP DatacenterKapolei, HI · 2 networks
- AlohaNAPKapolei, HI · 1 networks
- Endeavor Data CenterHonolulu, HI · 1 networks
See all datacenter sites in Hawaii →
Dataset updated . Screening estimates derived from public data sources.
Brownfield attributes are derived from EIA retired-generator and EPA public data. Existing capacity reflects the retired plant's historical nameplate, not deliverable interconnection for a new load. Confirm reusable interconnection rights, remediation status, and site availability with the utility, ISO, and current owner.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for Ewa Nui Substation DG, Honolulu, Honolulu, Hawaii. Pro and Enterprise plans unlock the full 164,098-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.