Pierce County, Washington — Interconnection Projects
The interXdata warehouse tracks 31 interconnection projects in Pierce, Washington, representing 2,256 MW of requested capacity.
31Total projects
2Active
21Operational
8Withdrawn
2,256 MWRequested capacity
Technology mix
| Technology | Projects | Requested capacity |
|---|---|---|
| Gas | 12 | 1,700 MW |
| Other | 17 | 355 MW |
| Battery | 1 | 200 MW |
| Solar | 1 | 1 MW |
Projects
| Project | Queue ID | Technology | Capacity | Status | Location |
|---|---|---|---|---|---|
| West Queue Project 8 — Gas in Pierce, Washington | 8 | Gas | 309.0 MW | withdrawn | Pierce, Washington |
| Frederickson Power LP | G70 | Gas | 300.0 MW | withdrawn | Pierce, Washington |
| 250MW Covington-Chehalis,Tacoma-Olympia | G40 | Gas | 250.0 MW | withdrawn | Pierce, Washington |
| WA Queue Project G2021-01 — Other in Pierce, Washington | G2021-01 | Other | 214.5 MW | withdrawn | Pierce, Washington |
| Greenwater BESS | 68341_GREE | Battery | 200.0 MW | active | Pierce, Washington |
| Frederickson Power LP | 55818_FICT | Gas | 192.0 MW | operational | Pierce, Washington |
| Pierce County Project No 2 | G52 | Gas | 170.0 MW | withdrawn | Pierce, Washington |
| Pierce County Project No 1 | G51 | Gas | 170.0 MW | withdrawn | Pierce, Washington |
| Frederickson Power LP | 55818_FIST | Gas | 126.3 MW | operational | Pierce, Washington |
| Frederickson | 99_2 | Gas | 88.9 MW | operational | Pierce, Washington |
| Frederickson | 99_1 | Gas | 88.9 MW | operational | Pierce, Washington |
| LaGrande | 3916_5 | Other | 40.0 MW | operational | Pierce, Washington |
| Alder | 3913_11 | Other | 26.0 MW | operational | Pierce, Washington |
| Alder | 3913_12 | Other | 25.0 MW | operational | Pierce, Washington |
| Electron | 3854_4 | Other | 7.5 MW | operational | Pierce, Washington |
| LaGrande | 3916_4 | Other | 6.0 MW | operational | Pierce, Washington |
| LaGrande | 3916_2 | Other | 6.0 MW | operational | Pierce, Washington |
| LaGrande | 3916_1 | Other | 6.0 MW | operational | Pierce, Washington |
| LaGrande | 3916_3 | Other | 6.0 MW | operational | Pierce, Washington |
| Electron | 3854_1 | Other | 5.1 MW | operational | Pierce, Washington |
| Electron | 3854_3 | Other | 5.1 MW | operational | Pierce, Washington |
| Electron | 3854_2 | Other | 5.1 MW | operational | Pierce, Washington |
| Crystal Mountain | 3853_1 | Other | 2.7 MW | operational | Pierce, Washington |
| LRI LFGTE Facility | 58688_A | Gas | 1.5 MW | operational | Pierce, Washington |
| LRI LFGTE Facility | 58688_B | Gas | 1.5 MW | operational | Pierce, Washington |
| LRI LFGTE Facility | 58688_C | Gas | 1.5 MW | operational | Pierce, Washington |
| WA Queue Project G1090 — Solar in Pierce, Washington | G1090 | Solar | 1.0 MW | active | Pierce, Washington |
| PSE Alderton Substation | L0244 | Other | 0.0 MW | withdrawn | Pierce, Washington |
| S. Tacoma-Southwest 230kV, Tacoma-Southwest 230kV | L0336 | Other | 0.0 MW | operational | Pierce, Washington |
| Cowlitz Substation | L0282 | Other | 0.0 MW | withdrawn | Pierce, Washington |
| Canyon Substation | L0243 | Other | 0.0 MW | operational | Pierce, Washington |
Top developers
| Developer (canonical) | Projects | Capacity |
|---|---|---|
| City of Tacoma, Department of Public Utilities, Light Division | 3 | 0 MW |
| Duke Energy Florida, LLC | 2 | 340 MW |
| Puget Sound Energy | 1 | 0 MW |
| Frederickson Power, LP | 1 | 300 MW |
| Calpine Energy Services, L.P. | 1 | 250 MW |
Explore related data
Source last checked2026-07-31
Data last materially changed2026-08-27
Page data generated2026-08-27
Provenance: bpa-oasis; U.S. EIA — Form EIA-860M generator inventory (operating + planned); Lawrence Berkeley National Laboratory — Queued Up interconnection dataset; tacoma-oasis. Values are normalized from public source records into the interXdata canonical warehouse; see each source for original filings.
Get an alert when a new project is proposed in Pierce County.
Start tracking with interXdata