Idaho interconnection queue
66 interconnection applications are pending in Idaho, requesting 12.0 GW of new generating capacity across 27 counties, as of 15 August 2026. That places Idaho #28 of 47 states by capacity queued.
Pending applications
66
of 861 ever filed
Capacity queued
12.0 GW
requested, not committed
Already built
4.2 GW
218 connected
Built vs decided
28.1%
558 withdrawn
Counties in the queue
27
with five or more filings
Large load requested
300 MW
23 requests
Source: the interconnection queues of every transmission provider operating in Idaho. Parsed and normalised by Watt Street. Data as of 15 August 2026.
Which queues serve Idaho
| Queue or utility | Applications | Capacity pending |
|---|---|---|
| IP | 674 | 7.8 GW |
| PacifiCorp | 126 | 3.1 GW |
| BPA | 35 | 700 MW |
| Avista | 24 | 455 MW |
| CAISO | 2 | 0 MW |
What is waiting in Idaho, by fuel
| Fuel | Projects | Capacity requested |
|---|---|---|
| Solar | 29 | 5.9 GW |
| Battery | 13 | 2.3 GW |
| Gas | 8 | 1.9 GW |
| Wind | 8 | 1.8 GW |
| Hydro | 7 | 93 MW |
| Nuclear | 1 | 45 MW |
Counties with the most capacity queued
| County | Pending | Capacity queued | Already built |
|---|---|---|---|
| Elmore County | 10 | 2.5 GW | 1.1 GW |
| Ada County | 11 | 2.0 GW | 531 MW |
| Bingham County | 8 | 1.8 GW | 152 MW |
| Power County | 4 | 1.6 GW | 297 MW |
| Owyhee County | 5 | 993 MW | 185 MW |
| Canyon County | 4 | 594 MW | 89 MW |
| Jerome County | 2 | 320 MW | 60 MW |
| Bannock County | 2 | 301 MW | 4 MW |
| Kootenai County | 4 | 255 MW | 0 MW |
| Bonneville County | 2 | 211 MW | 309 MW |
| Blaine County | 2 | 200 MW | 12 MW |
| Lincoln County | 1 | 200 MW | 16 MW |
| Fremont County | 1 | 195 MW | 9 MW |
| Minidoka County | 1 | 56 MW | 10 MW |
| Twin Falls County | 1 | 19 MW | 665 MW |
| Franklin County | 1 | 0 MW | 0 MW |
| Gem County | 1 | 0 MW | 0 MW |
| Butte County | 0 | 0 MW | 0 MW |
| Camas County | 0 | 0 MW | 0 MW |
| Caribou County | 0 | 0 MW | 0 MW |
| Cassia County | 0 | 0 MW | 72 MW |
| Clark County | 0 | 0 MW | 0 MW |
| Gooding County | 0 | 0 MW | 18 MW |
| Idaho County | 0 | 0 MW | 2 MW |
| Jefferson County | 0 | 0 MW | 2 MW |
Large-load connection requests in Idaho
23 requests to connect large new demand, totalling 300 MW.
| Request | Capacity | County | Status | Queue |
|---|---|---|---|---|
| Industrial Park | 120 MW | Kootenai County | withdrawn | BPA |
| Thompson Creek Mine Load | 28 MW | Custer County | energized | BPA |
| Elmore County SFBRD | 27 MW | Elmore County | energized | BPA |
| Starrh Transformer Replacement | 21 MW | Cassia County | withdrawn | BPA |
| L0518 Pacific Substation Transformer | 21 MW | Cassia County | withdrawn | BPA |
| New Midway Substation | 14 MW | Teton County | active | BPA |
| Bridge Substation | 10 MW | Cassia County | active | BPA |
| Liberty Gold | 10 MW | Cassia County | active | BPA |
| Sand Creek Substation | 9 MW | Bonner County | active | BPA |
| Drummond-Macks Inn 46 kV to 115 kV Conversion | 8 MW | Fremont County | active | BPA |
| United Electric Line Tap | 8 MW | Cassia County | withdrawn | BPA |
| Rural Substation | 7 MW | Minidoka County | active | BPA |
| East Hills Substation | 7 MW | Cassia County | active | BPA |
| West Burley Loads | 5 MW | Teton County | energized | BPA |
| Burley Loads | 5 MW | Teton County | energized | BPA |
Idaho on the map
Every application above is plotted, searchable and clickable.