Mount Heron
Named in 3 PJM planning documents for 2 projects, from October 8, 2024 to July 18, 2025.
Newdescribed as
AEPzone
138kV and 69kVkV as printed
3mentions
Described as new: “Rebuild Skeggs Branch substation in the clear as Coronado Mount Heron substation. Establish New 138kV and 69kV Buses.” — source, page 3
Also printed as: Mount Heron Station
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 |
|---|---|---|---|---|---|
| AEP Transmission Zone: Baseline
B3333 Reactivation and Scope Change B3333 |
Not printed | $106.589M | 12/10/2027 | Not printed | 2025-07-18 SRRTEP Western |
| Buchanan County & Tazewell County, VA AEP-2021-AP014 · s3135.1-.5 |
Not printed | $29.2 M | 10/30/2027 | Not printed | 2024-10-08 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 |
$40.171 M → $106.589M | 2025-07-18 | 2025-07-18 |
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. 45 |
Buchanan County & Tazewell County, VA | “Provide transition fiber on the Garden Creek ‐ Richlands ‐ Skeggs Branch 69kV Line for connectivity at Mount Heron Station” |
| 2025-07-18 | SRRTEP Western Item 01 - Reliability Analysis Update p. 3 |
AEP Transmission Zone: Baseline B3333 Reactivation and Scope Change | “Rebuild Skeggs Branch substation in the clear as Coronado Mount Heron substation. Establish New 138kV and 69kV Buses.” 138kV and 69kV |
| 2024-10-08 | TEAC Informational Only - AEP Local Plan submission of supplemental projects 2024 p. 45 |
Buchanan County & Tazewell County, VA | “connectivity at Mount Heron Station” |
* 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.