Sunbury
Named in 3 PJM planning documents for 3 projects, from December 8, 2025 to October 6, 2026.
Existingdescribed as
PJM system-widezone
500 kVkV 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 |
|---|---|---|---|---|---|
| MAAC Regional Cluster: Baseline b4036.1 |
Not printed | $1789.39M | 6/1/2032 | Not printed | 2026-01-06 TEAC |
| B4036.17 Scope Change: Baseline B4036.17 |
Not printed | $30M | 6/1/2032 | Not printed | 2026-10-06 TEAC |
| MAAC Regional Cluster: Baseline 2025-W1-237 |
Not printed | $1738.6M | 6/1/2031 | 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 prior value printed on the same page |
$4.98M → $30M | 2026-10-06 | 2026-10-06 |
Every mention
| Date | Document | Project | What the document says about it |
|---|---|---|---|
| 2026-10-06 | TEAC Item 16 - Reliability Analysis Update - Presentation p. 15 |
B4036.17 Scope Change: Baseline | “Reconfigure the Sunbury 500 kV substation” 500 kV |
| 2026-01-06 | TEAC Item 09 - Reliability Analysis Update p. 23 |
MAAC Regional Cluster: Baseline | “Install two new 500 kV circuit breakers with 63 kA, 5,000 Amps rating in transformer T24 and T25 bay.” 500 kV |
| 2025-12-08 | TEAC Item 11 - Reliability Analysis Update p. 52 |
MAAC Regional Cluster: Baseline | “Sunbury 500 kV substation upgrades” 500 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.