Mt. Pony Sub
Named in 3 PJM planning documents for 1 project, from November 6, 2024 to October 8, 2025.
Newdescribed as
DOMzone
230 kV, 230kVkV as printed
3mentions
Described as new: “Connect the new substation” — source, page 18
Also printed as: Mt Pony
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 |
|---|---|---|---|---|---|
| Dominion Transmission Zone: Supplemental Customer Load Request DOM-2024-0084 · s3684 |
Conceptual | $39.8M | Q2 2028 | 160 MW | 2025-10-08 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 | 01/01/2027 → Q2 2028 | 2024-11-06 | 2025-02-04 |
| Substations named | MT PONY → MCDEVITT; MT PONY | 2024-11-06 | 2025-02-04 |
Every mention
| Date | Document | Project | What the document says about it |
|---|---|---|---|
| 2025-10-08 | TEAC Informational Only - Dominion Local Plan Submission of the Supplemental Projects 2025 p. 46 |
Dominion Transmission Zone: Supplemental Customer Load Request | “new 230 kV delivery point (Mt. Pony Sub)” 230 kV |
| 2025-02-04 | TEAC Item 11 - Dominion Supplemental Projects p. 18 |
Dominion Transmission Zone: Supplemental Customer Load Request | “Connect the new substation” 230kV |
| 2024-11-06 | TEAC Item 12 - Dominion Supplemental Projects p. 12 |
Dominion Transmission Zone: Supplemental Customer Load Request | “new 230 kV delivery point (Mt. Pony Sub)” 230 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.