Marion County, SC interconnection queue
10 interconnection applications are pending in Marion County, SC, requesting 535 MW of new generating capacity, as of 15 August 2026. 1 projects have been built here and 8 have been withdrawn since 2017.
Source: interconnection queues published by Duke, S-C. 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 Marion County, by fuel
| Fuel | Projects | Capacity requested |
|---|---|---|
| Solar | 8 | 396 MW |
| Other | 2 | 139 MW |
Outcomes of every application filed here
| Outcome | Projects | Capacity | Share |
|---|---|---|---|
| Built | 1 | 2 MW | 5.3% |
| Still pending | 10 | 535 MW | 52.6% |
| Withdrawn | 8 | 1.2 GW | 42.1% |
| 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 |
|---|---|---|---|---|---|
| 146 | Solar | 400 MW | withdrawn | 2020-05 | S-C |
| 260 | Solar | 250 MW | withdrawn | 2024-05 | S-C |
| 188 | Solar | 200 MW | withdrawn | 2023-06 | S-C |
| 282 | Solar | 120 MW | active | 2025-01 | S-C |
| 186 | Solar | 100 MW | withdrawn | 2023-06 | S-C |
| 68 | Solar | 100 MW | withdrawn | 2017-12 | S-C |
| 17658 | Solar | 80 MW | withdrawn | 2017-10 | Duke |
| 238 | Solar | 75 MW | active | 2023-06 | S-C |
| 917501 | Solar | 75 MW | withdrawn | 2023-09 | Duke |
| 962968 | Solar | 75 MW | active | 2024-09 | Duke |
| PP00056 | Other | 75 MW | active | 2025-10 | Duke |
| 917739 | Solar | 64 MW | active | 2023-09 | Duke |
| PP00029 | Other | 64 MW | active | 2025-06 | Duke |
| 239 | Solar | 55 MW | active | 2023-06 | S-C |
| 977878 | Solar | 3 MW | active | 2025-06 | Duke |
How this county ranks
Marion County ranks #594 of 1,607 US counties by capacity currently queued, and #10 of 39 in South Carolina.
Other South Carolina counties in the queue
| County | Pending | Capacity queued |
|---|---|---|
| Colleton County | 19 | 5.7 GW |
| Rowan County | 4 | 2.6 GW |
| Anderson County | 18 | 1.9 GW |
| Williamsburg County | 14 | 1.2 GW |
| Darlington County | 20 | 1.2 GW |
| Berkeley County | 6 | 1.0 GW |
| Aiken County | 10 | 657 MW |
| Georgetown County | 7 | 561 MW |
Go deeper on Marion 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 Marion County on the map County reports All of South Carolina