Clifton Sub
Named in 2 PJM planning documents for 2 projects, from January 7, 2025 to December 8, 2025.
Existingdescribed as
PJM system-widezone
230.kVkV as printed
2mentions
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 |
|---|---|---|---|---|---|
| PJM Selected Solution: Breaker Upgrades b4000.110 |
Not printed | $100.85 M | 6/1/2029 | Not printed | 2025-01-07 TEAC |
| 2025W1 – Regional Cluster Preferred Solution: Breaker Upgrades | Not printed | $18.5 M | 6/1/2030 | Not printed | 2025-12-08 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 |
|---|---|---|---|
| Cost estimate | $100.85 M → $10.06 M | 2025-01-07 | 2025-04-01 |
| Cost estimate prior value printed on the same page |
$11.5 M → $10.06 M | 2025-04-01 | 2025-04-01 |
| Substations named | ASHBURN; BEAUMEADE; BRADDOCK; BRAMBLETON; BRISTERS; BULL RUN; BUTTERMILK; CABIN RUN; CARSON; CLIFTON; DOUBS; EVERGREEN MILLS; GOOSE CREEK; LADYSMITH; LIBERTY; LOCKRIDGE; LOUDOUN; MARSH RUN; MORRISVILLE; MOSBY; MT STORM; NIMBUS; NIVO 1; NORTH ANNA; PARAGON PARK; PLEASANTVIEW; REMINGTON; ROUNDTABLE; VINT HILL; YARDLEY → DOUBS | 2025-01-07 | 2025-04-01 |
Every mention
| Date | Document | Project | What the document says about it |
|---|---|---|---|
| 2025-12-08 | TEAC Item 11 - Reliability Analysis Update p. 123 |
2025W1 – Regional Cluster Preferred Solution: Breaker Upgrades | “Clifton Sub 230.kV 3 63kA 80kA 3” 230.kV |
| 2025-01-07 | TEAC Item 12 - Reliability Analysis Update p. 81 |
PJM Selected Solution: Breaker Upgrades | No role wording 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.