St Clair
Named in 6 PJM planning documents for 4 projects, from December 13, 2024 to March 19, 2026.
Existingdescribed as
APSzone
138 kVkV as printed
6mentions
Also printed as: St Clair Substation · St. Clair
Projects naming this substation
Figures are from the most recent document naming each project, as printed. Each links to its page.
| Project | Status as printed | Cost estimate | In-service date | Customer load | As of |
|---|---|---|---|---|---|
| Misoperation Relay Projects APS-2024-098 · s3707.1 |
Not printed | $4.5 | 7/27/2029 | Not printed | 2025-10-08 TEAC |
| Misoperation Relay Projects APS-2024-098 to 105, APS-2024-111 to 114, APS-2024-116, APS-2024-118 |
Not printed | Not printed | Not printed | Not printed | 2024-12-13 SRRTEP Western |
| Misoperation Relay Projects APS-2024-098 to APS-2024-100, APS-2025-015 |
Conceptual | Not printed | Not printed | Not printed | 2025-06-13 SRRTEP Western |
| Bethel Park, PA APS-2025-026 |
Cancelled | Not printed | Not printed | Not printed | 2026-03-19 SRRTEP Western |
Changes between documents
Where two documents print different values for the same project. A large change in a cost estimate can reflect a need being combined with others into one solution, not only a re-estimate; read both pages.
| What changed | Printed values | Earlier | Later |
|---|---|---|---|
| Substations named | BETHEL PARK; ST CLAIR → BETHEL PARK | 2026-03-19 | 2026-10-06 |
Every mention
| Date | Document | Project | What the document says about it |
|---|---|---|---|
| 2026-09-08* | SRRTEP Western APS local plan submission of the supplemental projects for 2025 RTEP p. 53 |
Misoperation Relay Projects | “At St Clair Substation, replace circuit breaker” 138 kV |
| 2026-03-19 | SRRTEP Western Item 01 - APS Supplemental Projects p. 8 |
Bethel Park, PA | No role wording 138 kV |
| 2025-10-08 | TEAC Informational Only - APS Local Plan Submission of the Supplemental Projects for 2025 p. 53 |
Misoperation Relay Projects | “At St Clair Substation, replace circuit breaker, disconnect switches” 138 kV |
| 2025-09-19 | SRRTEP Western Item 02 - APS Supplemental Projects p. 3 |
Bethel Park, PA | No role wording |
| 2025-06-13 | SRRTEP Western Item 06 - APS Supplemental Projects p. 5 |
Misoperation Relay Projects | “At St Clair Substation, replace circuit breaker” 138 kV |
| 2024-12-13 | SRRTEP Western Item 15 - APS Supplemental Project p. 5 |
Misoperation Relay Projects | No role wording 138 kV |
* A local-plan posting carries no meeting date; the date shown is when pjm.com last modified the file.
Before relying on any of this
- Names are machine-extracted from PDFs by a language model. Every exported name was checked to be printed in the PDF text; names read only from maps or diagrams are excluded.
- An entry is a name within a transmission zone, not a verified physical facility. The same name in two zones is two entries; spelling variants are merged only when they differ by punctuation, case or a generic suffix such as "Substation".
- role is "new" only where a cited document phrase describes the substation as new or describes constructing it, "existing" where a phrase describes work at it, otherwise "unknown".
- Costs, dates, statuses and loads are the documents' own printed values for the most recent document that names the substation. Each one shipped here is printed on its cited page ("verification": "exact" or "on-page"); values that failed that check are withheld and counted in figures_withheld_unverified. None has been reviewed by a person.
- Zone is the transmission owner whose deck presented the project. PJM-SYSTEM marks names from PJM's own reliability decks, which span zones.
- A printed customer load is the amount a document states for a request. It says nothing about the substation's capability.