TAP207221
SubstationMontana · IDAHO POWER CO
TAP207221 is an electric transmission substation in Montana, operated by IDAHO POWER CO. It is classified as sub-transmission (115 kv) and connects 3 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 |
|---|---|---|---|---|
| #74908 | 115 kV | IDAHO POWER CO | — | 12.9 mi |
| #74909 | 115 kV | IDAHO POWER CO | — | 0.5 mi |
| #74910 | 115 kV | IDAHO POWER CO | — | 11.2 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP207221, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN201303 | Substation-Adjacent | ID | Lemhi County | 115 kV | 100 MW | 1.1 yrs | 63.5 |
| TAP207223 | Substation-Adjacent | ID | Lemhi County | 115 kV | 100 MW | 1.1 yrs | 60.7 |
| UNKNOWN207224 | Substation-Adjacent | ID | Lemhi County | 115 kV | 100 MW | 1.1 yrs | 59.7 |
| UNKNOWN207225 | Substation-Adjacent | ID | Lemhi County | 115 kV | 100 MW | 1.1 yrs | 58.8 |
| TAP207221 | Substation-Adjacent | ID | Lemhi County | 115 kV | 100 MW | 1.1 yrs | 58.8 |
| Greenfield (UNKNOWN201303 - TENDOY 2) | Greenfield | ID | Lemhi County | 115 kV | 100 MW | 1.1 yrs | 58.4 |
| Greenfield (TAP207230 - UNKNOWN201303) | Greenfield | ID | Lemhi County | 115 kV | 100 MW | 1.1 yrs | 57.2 |
| Greenfield (UNKNOWN201303 - TAP207221) | Greenfield | ID | Lemhi County | 115 kV | 100 MW | 1.1 yrs | 53.0 |
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 TAP207221 substation, Montana. 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.