St. Tammany Parish, LA interconnection queue
1 interconnection applications are pending in St. Tammany Parish, LA, requesting 450 MW of new generating capacity, as of 15 August 2026. 0 projects have been built here and 4 have been withdrawn since 2020.
Source: interconnection queues published by MISO. 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 St. Tammany Parish, by fuel
| Fuel | Projects | Capacity requested |
|---|---|---|
| Hybrid | 1 | 450 MW |
Outcomes of every application filed here
| Outcome | Projects | Capacity | Share |
|---|---|---|---|
| Built | 0 | 0 MW | 0.0% |
| Still pending | 1 | 450 MW | 20.0% |
| Withdrawn | 4 | 600 MW | 80.0% |
| 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 |
|---|---|---|---|---|---|
| MCKNIGHT - PLANT DANIEL 500.0kV | Hybrid | 450 MW | active | 2022-09 | MISO |
| Talisheek - North Slidell 230kV Line | Hybrid | 250 MW | withdrawn | 2020-06 | MISO |
| Talisheek - North Slidell 230kV Line | Hybrid | 150 MW | withdrawn | 2020-06 | MISO |
| Mandeville - North Slidell 230kV Line (not listed on TTF, but both substations s | Hybrid | 100 MW | withdrawn | 2021-08 | MISO |
| J2245 Substation | Solar | 100 MW | withdrawn | 2022-09 | MISO |
How this county ranks
St. Tammany Parish ranks #658 of 1,607 US counties by capacity currently queued, and #14 of 31 in Louisiana.
Other Louisiana counties in the queue
| County | Pending | Capacity queued |
|---|---|---|
| Bossier Parish | 3 | 1.7 GW |
| Iberville Parish | 3 | 1.7 GW |
| Morehouse Parish | 6 | 1.2 GW |
| Ouachita Parish | 4 | 1.2 GW |
| Lafayette Parish | 3 | 943 MW |
| Jefferson Davis Parish | 5 | 890 MW |
| Rapides Parish | 3 | 830 MW |
| St. Landry Parish | 4 | 818 MW |
Go deeper on St. Tammany Parish
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 St. Tammany Parish on the map County reports All of Louisiana