Don Marquis
Named in 3 PJM planning documents for 1 project, from April 7, 2026 to October 6, 2026.
Existingdescribed as
AEPzone
345kVkV 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 |
|---|---|---|---|---|---|
| Don Marquis, OH AEP-2026-OH004 · s3864.1-6 |
Conceptual | $156.6 M | 12/31/2027 | 800 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 |
|---|---|---|---|
| In-service date | 12/2027 → 12/31/2027 | 2026-02-03 | 2026-04-07 |
| Substations named | DON MARQUIS; MARQUIS; MONZA → DON MARQUIS; MONZA | 2026-04-07 | 2026-10-06 |
Every mention
| Date | Document | Project | What the document says about it |
|---|---|---|---|
| 2026-10-07* | SRRTEP Western AEP local plan submission of the supplemental projects for 2026 RTEP p. 29 |
Don Marquis, OH | “Install four (4) 63kA 5000A breakers” 345kV |
| 2026-10-06 | TEAC Informational Only - AEP Local Plan Submission of the Supplemental Projects for 2026 p. 29 |
Don Marquis, OH | “Install four (4) 63kA 5000A breakers for two (2) additional feeds” 345kV |
| 2026-04-07 | TEAC Item 04 - AEP Supplemental Projects p. 11 |
Don Marquis, OH | “Install four (4) 63kA 5000A breakers for two (2) additional feeds” 345kV |
* 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.