NAMPA
SubstationOregon · IDAHO POWER CO
NAMPA is an electric transmission substation in Oregon, operated by IDAHO POWER CO. It is classified as high-voltage (230 kv) and connects 4 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #70434 | 230 kV | IDAHO POWER CO | — | 3.2 mi |
| #70435 | 138 kV | IDAHO POWER CO | — | 1.1 mi |
| #70446 | 138 kV | IDAHO POWER CO | — | 2.6 mi |
| #72497 | 138 kV | IDAHO POWER CO | — | 1.6 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of NAMPA, 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 |
|---|---|---|---|---|---|---|---|
| TAP204881 | Substation-Adjacent | ID | Ada County | 230 kV | 300 MW | 2.0 yrs | 75.0 |
| MORA | Substation-Adjacent | ID | Ada County | 230 kV | 300 MW | 2.0 yrs | 74.4 |
| LOCUSST | Substation-Adjacent | ID | Ada County | 230 kV | 300 MW | 1.7 yrs | 72.0 |
| USTICK | Substation-Adjacent | ID | Ada County | 138 kV | 100 MW | 2.0 yrs | 71.9 |
| NAMPA | Substation-Adjacent | ID | Canyon County | 230 kV | 300 MW | 1.7 yrs | 71.8 |
| CLOVERDALE | Substation-Adjacent | ID | Ada County | 138 kV | 100 MW | 2.0 yrs | 71.5 |
| TAP204882 | Substation-Adjacent | ID | Ada County | 138 kV | 100 MW | 2.0 yrs | 71.4 |
| VICTORY | Substation-Adjacent | ID | Ada County | 138 kV | 100 MW | 2.0 yrs | 70.9 |
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 NAMPA substation, Oregon. 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.