Milepost
Named in 4 PJM planning documents for 3 projects, from October 8, 2024 to November 14, 2025.
Newdescribed as
AEPzone
138kVkV as printed
4mentions
Described as new: “Construct a greenfield station “Milepost”” — source, page 73
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 |
|---|---|---|---|---|---|
| Roberts-Wilson 138kV line “in & out” of Milepost 138kV b3955.1 |
Not printed | $12.17 M | 06/01/2030 | Not printed | 2025-11-14 SRRTEP Western |
| Roberts-Wilson 138kV line “in & out” of Milepost 138kV | Not printed | $12.17 M | 06/01/2030 | Not printed | 2025-10-17 SRRTEP Western |
| Columbus, OH AEP-2023-OH047 · s3213.1-.6 |
Engineering | $12.05 M | 04/15/2024 | 33.5 MVA | 2024-10-08 TEAC |
Every mention
| Date | Document | Project | What the document says about it |
|---|---|---|---|
| 2026-09-08* | SRRTEP Western AEP local plan submission of the supplemental projects for 2024 RTEP p. 73 |
Columbus, OH | “Construct a greenfield station “Milepost”” 138kV |
| 2025-11-14 | SRRTEP Western Item 01 - SRRTEP West - Reliability Analysis Update p. 43 |
Roberts-Wilson 138kV line “in & out” of Milepost 138kV | “Install additional 2-138kV circuit breakers at Milepost
substation” 138kV |
| 2025-10-17 | SRRTEP Western Item 01 - SRRTEP West - Reliability Analysis Update p. 37 |
Roberts-Wilson 138kV line “in & out” of Milepost 138kV | “into the Milepost 138kV substation” 138kV |
| 2024-10-08 | TEAC Informational Only - AEP Local Plan submission of supplemental projects 2024 p. 73 |
Columbus, OH | “Construct a greenfield station “Milepost”” 138kV |
* 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.