Trego Substation
Named in 3 PJM planning documents for 1 project, from September 18, 2025 to October 6, 2026.
Existingdescribed as
DOMzone
115/12.5kVkV as printed
3mentions
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 |
|---|---|---|---|---|---|
| Loading Exceeds Nameplate Rating, Voltage Island DOM-2025-0036 · s3893 |
Under construction | $0.7M | 04/30/2026 | Not printed | 2026-10-06 TEAC |
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 |
|---|---|---|---|
| In-service date | 04/30/2026 → 11/16/2026 | 2025-09-18 | 2026-02-12 |
| In-service date | 11/16/2026 → 04/30/2026 | 2026-02-12 | 2026-10-06 |
Every mention
| Date | Document | Project | What the document says about it |
|---|---|---|---|
| 2026-10-06 | TEAC Informational Only - Dominion Local Plan Submission of the Supplemental Projects 2026 p. 38 |
Loading Exceeds Nameplate Rating, Voltage Island | “installation of one three-phase 9 MVA, 115/12.5kV transformer, and replace the existing transformer with a 9 MVA, 115/4.16kV transformer at Trego Substation” 115/12.5kV |
| 2026-02-12 | SRRTEP Southern Item 07 - DOM Supplemental Projects p. 6 |
Loading Exceeds Nameplate Rating, Voltage Island | “replacing the existing transformer with a 9 MVA, 115/4.16kV transformer to feed
Circuit 831 at Trego Substation” 115/12.5kV |
| 2025-09-18 | SRRTEP Southern Item 06 - DOM Supplemental Projects p. 8 |
Loading Exceeds Nameplate Rating, Voltage Island | “replacing the existing transformer with a 9 MVA, 115/4.16kV transformer to feed Circuit 831 at Trego Substation” |
* 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.