BIG HANAFORD
SubstationWashington · BONNEVILLE POWER ADMINISTRATION
BIG HANAFORD is an electric transmission substation in Washington, operated by BONNEVILLE POWER ADMINISTRATION. It is classified as extra-high-voltage (500 kv) and connects 2 transmission lines. Substation proximity is one of the strongest speed-to-power signals for siting a datacenter — interconnection distance to an energized, high-voltage bus is often the binding constraint on time-to-energization.
Voltage & classification
Ownership & operation
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #73372 | 500 kV | BONNEVILLE POWER ADMINISTRATION | — | 0.5 mi |
| #72644 | 230 kV | BONNEVILLE POWER ADMINISTRATION | — | 2.5 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of BIG HANAFORD, ranked by DC Readiness. Sites this close to an energized substation carry a strong speed-to-power advantage.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| TRANSALTA CENTRALIA GENERATION | Substation-Adjacent | WA | Thurston County | 500 kV | 1,000 MW | 1.7 yrs | 76.1 |
| PAUL | Substation-Adjacent | WA | Thurston County | 500 kV | 1,000 MW | 1.7 yrs | 73.6 |
| OLYMPIA | Substation-Adjacent | WA | Thurston County | 500 kV | 1,000 MW | 1.7 yrs | 71.9 |
| YELM PP | Substation-Adjacent | WA | Thurston County | 230 kV | 300 MW | 1.7 yrs | 69.5 |
| CHEHALIS | Substation-Adjacent | WA | Thurston County | 230 kV | 300 MW | 1.7 yrs | 69.1 |
| MAY STREET | Substation-Adjacent | WA | Thurston County | 230 kV | 300 MW | 1.7 yrs | 68.4 |
| Transalta Centralia Generation | Brownfield | WA | Thurston | — | 1,052 MW | — | 68.2 |
| MOSSYROCK | Substation-Adjacent | WA | Lewis County | 240 kV | 300 MW | 1.7 yrs | 67.7 |
Dataset updated . Screening estimates derived from public data sources.
Substation attributes are derived from public HIFLD / EIA infrastructure data and may lag real-world upgrades or retirements. Voltage and connected-line counts are screening figures — confirm available capacity and interconnection terms directly with the operating utility and ISO.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for BIG HANAFORD substation, Washington. 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.