CRAIGMONT
SubstationIdaho · AVISTA CORP
At a glance
CRAIGMONT is an electric transmission substation in Idaho, on AVISTA CORP's transmission network. It is classified as distribution (69–115 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #203537 | 69 kV | AVISTA CORP | — | 11.2 mi |
| #203538 | 69 kV | AVISTA CORP | — | 19.2 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of CRAIGMONT, 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 |
|---|---|---|---|---|---|---|---|
| DWORSHAK | Substation-Adjacent | ID | Lewis County | 500 kV | 1,000 MW | 5.0 yrs | 62.1 |
| TAP207679 | Substation-Adjacent | ID | Nez Perce County | 138 kV | 100 MW | 5.0 yrs | 56.7 |
| OZ Idaho | Greenfield | ID | Idaho | — | — | 5.0 yrs | 56.5 |
| SWEETWATER | Substation-Adjacent | ID | Nez Perce County | 115 kV | 100 MW | 5.0 yrs | 56.3 |
| OZ Lewis | Greenfield | ID | Lewis | — | — | 5.0 yrs | 55.1 |
| DWORSHAK NO.2 | Substation-Adjacent | ID | Lewis County | 138 kV | 100 MW | 5.0 yrs | 53.9 |
| TAP204919 | Substation-Adjacent | ID | Lewis County | 138 kV | 100 MW | 5.0 yrs | 53.8 |
| OROFINO | Substation-Adjacent | ID | Lewis County | 138 kV | 100 MW | 5.0 yrs | 53.8 |
How does CRAIGMONT compare with other substations in Idaho?
Idaho has 897 substation records in HIFLD, of which 274 carry a station name; the rest are unnamed tap points, risers and line ends. 54 named substations in the state are in CRAIGMONT's 69–114 kV band (20% of named stations). 193 sit in a higher band. 11 named substations in Idaho operate at 345 kV or above. The highest voltage recorded in the state is 500 kV, and the state median is 138 kV.
Who owns the transmission lines at CRAIGMONT?
The 2 connected lines listed above are owned by AVISTA CORP. Line voltages range from 69 kV to 69 kV. Their combined recorded length is about 30.5 miles.
How do candidate sites near CRAIGMONT score?
The 8 highest-scoring candidate sites within about 25 miles range from 54 to 62 on the 0–100 DC Readiness scale. They fall in Lewis County, Nez Perce County, Idaho, Lewis. The Idaho average across 2,171 scored sites is 51.7. 646 of those Idaho sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
What voltage is CRAIGMONT substation?
CRAIGMONT has a maximum voltage of 69 kV. That places it in the 69–114 kV band. The median named US substation in this dataset is 115 kV, so CRAIGMONT is below the national midpoint.
How many transmission lines connect to CRAIGMONT substation?
2 transmission lines terminate at or pass through CRAIGMONT in the HIFLD line data. The connected lines listed here run at 69 kV. Together the listed lines cover about 30.5 miles.
Who owns CRAIGMONT substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at CRAIGMONT belong to AVISTA CORP. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is CRAIGMONT substation located?
CRAIGMONT is in Idaho at 46.2432, -116.4632. The datacenter candidate sites closest to it are in Lewis County, Nez Perce County, Idaho.
Are there datacenter candidate sites near CRAIGMONT substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of CRAIGMONT. The highest-scoring is DWORSHAK at 62/100. Across Idaho, the average DC Readiness score is 51.7.
Other 69 kV substations in Idaho
- POCATELLO· 5 lines
- IDAHO FALLS· 4 lines
- THOUSAND SPRINGS· 4 lines
- COEUR D'ALENE 15TH STREET· 3 lines
- ST. ANTHONY· 3 lines
- THE RACK· 3 lines
- BLACK CANYON· 2 lines
- BUHL· 2 lines
- All named substations in Idaho· 274 stations
- Datacenter candidate sites in Idaho· 2,171 sites
- Brownfield and retired plant sites in Idaho
- Substations by state
About this data
Source: HIFLD Electric Substations and Transmission Lines (U.S. Department of Homeland Security), as published June 29, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “CRAIGMONT substation, Idaho”, https://gridcensus.com/substations/idaho/craigmont-119b9da0 (data as of June 29, 2026).
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
Every site and score for CRAIGMONT substation, Idaho 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.