Walla Walla County, WA interconnection queue
8 interconnection applications are pending in Walla Walla County, WA, requesting 1.7 GW of new generating capacity, as of 15 August 2026. 3 projects have been built here and 23 have been withdrawn since 2000.
Source: interconnection queues published by BPA, PacifiCorp. Parsed and normalised by Watt Street. Data as of 15 August 2026. A queued project is a request, not a commitment.
What is waiting in Walla Walla County, by fuel
| Fuel | Projects | Capacity requested |
|---|---|---|
| Wind | 5 | 1.2 GW |
| Solar | 1 | 229 MW |
| Battery | 1 | 210 MW |
| Hydro | 1 | 3 MW |
Outcomes of every application filed here
| Outcome | Projects | Capacity | Share |
|---|---|---|---|
| Built | 3 | 519 MW | 8.8% |
| Still pending | 8 | 1.7 GW | 23.5% |
| Withdrawn | 23 | 4.0 GW | 67.6% |
| Suspended | 0 | — | 0.0% |
Withdrawal is the ordinary outcome of an interconnection application nationally, not a sign of a problem in this county. Most withdrawals are a developer testing a site and moving on.
The largest projects on file
| Project | Fuel | Capacity | Status | Filed | Queue |
|---|---|---|---|---|---|
| G0281 | Gas | 760 MW | withdrawn | 2007-07 | BPA |
| 111 | Solar | 375 MW | withdrawn | 2021-01 | Avista |
| G0925 | Wind | 308 MW | active | 2023-09 | BPA |
| G0923 | Wind | 307 MW | active | 2023-09 | BPA |
| G0924 | Wind | 307 MW | active | 2023-09 | BPA |
| G0873 | Wind | 300 MW | withdrawn | 2023-06 | BPA |
| AES Pacific Inc | Gas | 300 MW | withdrawn | 2001-08 | BPA |
| G0935 | Solar | 229 MW | active | 2023-09 | BPA |
| G0535 | Hydro | 210 MW | completed | 2016-05 | BPA |
| 1 | Wind | 210 MW | completed | 2000-09 | PacifiCorp |
| S0027 | Battery | 210 MW | active | 2024-02 | PacifiCorp |
| G0671 | Wind | 200 MW | active | 2021-02 | BPA |
| 200MW North Lewiston-Walla Walla 2 | Wind | 200 MW | withdrawn | 2001-09 | BPA |
| 200MW North Lewiston-Walla Walla 1 | Wind | 200 MW | withdrawn | 2001-09 | BPA |
| C2-141 | Solar | 199 MW | withdrawn | 2022-05 | PacifiCorp |
Large-load connection requests in this county
Requests to connect large new demand — data centres, industry, electrification — as distinct from generation. 10 recorded here.
| Request | Capacity | Status | Queue | Stated end use |
|---|---|---|---|---|
| Second 1200 MW Data Center Load | 1.2 GW | active | BPA | not stated |
| 1200 MW Data Center Loads | 1.2 GW | active | BPA | not stated |
| Wallula 500kV | 500 MW | withdrawn | BPA | not stated |
| Data Storage Facility | 300 MW | active | BPA | not stated |
| Wallula Area Expansion | 300 MW | energized | BPA | not stated |
| 125 MW 115 kV Sacajawea Tap | 125 MW | energized | BPA | not stated |
| Grays Harbor Loads | 40 MW | withdrawn | BPA | not stated |
| Airport Substation | 25 MW | active | BPA | not stated |
| Radar Hill Substation | 11 MW | active | BPA | not stated |
| Lower Monumental Substation | — | energized | BPA | not stated |
494 of the 545 large-load requests we hold state no end use at all, so most cannot be attributed to any industry. Where this table says “not stated”, that is the filing’s own silence, not our omission.
How this county ranks
Walla Walla County ranks #233 of 1,607 US counties by capacity currently queued, and #6 of 30 in Washington.
Other Washington counties in the queue
| County | Pending | Capacity queued |
|---|---|---|
| Benton County | 20 | 10.5 GW |
| Yakima County | 14 | 6.5 GW |
| Klickitat County | 23 | 6.2 GW |
| Grant County | 13 | 3.7 GW |
| Douglas County | 8 | 3.6 GW |
| Lincoln County | 8 | 1.6 GW |
| Spokane County | 11 | 973 MW |
| Lewis County | 3 | 964 MW |
Go deeper on Walla Walla County
The interactive map plots every one of these applications, and a generated county report puts them in a sourced PDF with the date each figure was true on every page.
Open Walla Walla County on the map County reports All of Washington