Slykerville
Named in 5 PJM planning documents for 2 projects, from November 6, 2024 to May 8, 2026.
Newdescribed as
PPLzone
230kVkV as printed
5mentions
Described as new: “Install a four bay BAAH 230kV switchyard with a 125MVAR Capacitor bank” — 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 |
|---|---|---|---|---|---|
| Harwood, PA PPL-2024-0012 · s3549 |
Conceptual | $73.3 M | 05/30/2028 | 1,000 MW | 2025-10-08 TEAC |
| PPL Transmission Zone: Supplemental PPL-2025-0010 · S3818 |
Conceptual | $88.5M | 5/30/2027 | 1000 MW | 2026-05-08 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 |
|---|---|---|---|
| In-service date | 05/2027 → 05/30/2028 | 2024-10-08 | 2024-11-06 |
| Cost estimate | $95 M → $88.5M | 2025-09-09 | 2026-05-08 |
| Cost estimate prior value printed on the same page |
$95M → $88.5M | 2026-05-08 | 2026-05-08 |
| In-service date | 05/2027 → 05/30/2028 | 2025-05-06 | 2025-09-09 |
| In-service date | 05/30/2028 → 5/30/2027 | 2025-09-09 | 2026-05-08 |
Every mention
| Date | Document | Project | What the document says about it |
|---|---|---|---|
| 2026-09-08* | SRRTEP Mid-Atlantic PPL local plan submission for 2025 RTEP p. 7 |
Harwood, PA | “new Slykerville 230kV switchyard” 230kV |
| 2026-05-08 | TEAC Item 06 - PPL Supplemental Projects p. 4 |
PPL Transmission Zone: Supplemental | “Install two new DBDB (BAAH ultimate) bays at Slykerville 230kV yard” 230kV |
| 2025-10-08 | TEAC Informational Only - PPL Local Plan Submission of the Supplemental Projects for 2025 p. 7 |
Harwood, PA | “Install a four bay BAAH 230kV switchyard with a 125MVAR Capacitor bank” 230kV |
| 2025-09-09 | TEAC Item 09 - PPL Supplemental Projects p. 8 |
PPL Transmission Zone: Supplemental | “Install two new DBDB (BAAH ultimate) bays at Slykerville 230kV yard” 230kV |
| 2024-11-06 | TEAC Item 08 - PPL Supplemental Projects p. 10 |
Harwood, PA | “Install a four bay BAAH 230kV switchyard with a 125MVAR Capacitor bank” 230kV |
* 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.