Boulder County, CO interconnection queue
3 interconnection applications are pending in Boulder County, CO, requesting 180 MW of new generating capacity, as of 15 August 2026. 0 projects have been built here and 4 have been withdrawn since 2011.
Source: interconnection queues published by PRPA, PSCo. 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 Boulder County, by fuel
| Fuel | Projects | Capacity requested |
|---|---|---|
| Battery | 2 | 175 MW |
| Hydro | 1 | 5 MW |
Outcomes of every application filed here
| Outcome | Projects | Capacity | Share |
|---|---|---|---|
| Built | 0 | 0 MW | 0.0% |
| Still pending | 3 | 180 MW | 42.9% |
| Withdrawn | 4 | 222 MW | 57.1% |
| 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 |
|---|---|---|---|---|---|
| 21-11153 | Battery | 125 MW | active | 2021-11 | PRPA |
| GI-2018-31 | Battery | 100 MW | withdrawn | 2018-09 | PSCo |
| GI-2018-32 | Battery | 100 MW | withdrawn | 2018-09 | PSCo |
| 23-05031 | Battery | 50 MW | active | 2023-05 | PRPA |
| GI-2011-6 | Solar | 20 MW | withdrawn | 2011-07 | PSCo |
| GI-2012-1 | Hydro | 5 MW | active | 2012-01 | PSCo |
| GI-2011-5 | Solar | 2 MW | withdrawn | 2011-07 | PSCo |
How this county ranks
Boulder County ranks #957 of 1,607 US counties by capacity currently queued, and #23 of 26 in Colorado.
Other Colorado counties in the queue
| County | Pending | Capacity queued |
|---|---|---|
| Weld County | 38 | 7.2 GW |
| Kit Carson County | 37 | 7.0 GW |
| Pueblo County | 29 | 5.1 GW |
| Lincoln County | 18 | 4.6 GW |
| Morgan County | 12 | 3.0 GW |
| El Paso County | 14 | 3.0 GW |
| Cheyenne County | 8 | 2.6 GW |
| Adams County | 9 | 2.3 GW |
Go deeper on Boulder 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 Boulder County on the map County reports All of Colorado