Tributary
Named in 4 PJM planning documents for 2 projects, from June 5, 2025 to October 6, 2026.
Newdescribed as
DOMzone
230 kVkV as printed
4mentions
Described as new: “Construct Tributary 230 kV switching station” — source, page 7
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
Tributary 230kV Delivery - REC DOM-2024-0009 · s3721 |
Engineering | $32.3M | 04/01/2027 | 108 MW | 2025-10-08 TEAC |
| Emy 230kV Delivery - REC DOM-2025-0051 · s4029 |
Conceptual | $26M | 05/01/2030 | 212 MW | 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 |
|---|---|---|---|
| Substations named | EMY → EMY; KRAKEN; NEW POST; TRIBUTARY | 2025-11-04 | 2026-02-03 |
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. 75 |
Emy 230kV Delivery - REC | No role wording |
| 2026-02-03 | TEAC Item 12 - DOM Supplemental Projects p. 8 |
Emy 230kV Delivery - REC | No role wording |
| 2025-10-08 | TEAC Informational Only - Dominion Local Plan Submission of the Supplemental Projects 2025 p. 64 |
Dominion Transmission Zone: Supplemental Tributary 230kV Delivery - REC | “Construct Tributary 230 kV switching station” 230 kV |
| 2025-06-05 | TEAC Item 08 - DOM Supplemental Projects p. 7 |
Dominion Transmission Zone: Supplemental Tributary 230kV Delivery - REC | “Construct Tributary 230 kV switching station” 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.