Hummelstown
Named in 6 PJM planning documents for 3 projects, from June 5, 2025 to October 6, 2026.
PJM interconnection queue
A PJM queue substation page has the same name: Hummelstown (PA) — 2 queue requests filed, 0 active.
Same name and state (weaker). Matched on name and state: the utility that presented this substation operates in one state, and every queue filing at a substation of the same name is in that state. No transmission owner is recorded on those filings, so this is a weaker match than one on owner. Not verified as the same facility.
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 |
|---|---|---|---|---|---|
| Highspire, PA PPL-2025-0007 |
Conceptual | $89 M | 05/30/2028 | 450 MW | 2026-10-06 TEAC |
| Hummelstown 230-69kV Transformer 1 Replacement PPL-2026-0022 |
Conceptual | $7.1 M | 12/31/2029 | Not printed | 2026-10-06 TEAC |
| Bressler 230kV Switchyard PPL-2026-0037 |
Conceptual | $169 M | 03/31/2029 | 900 MW | 2026-09-08 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 | 09/2027 → 05/30/2028 | 2025-05-06 | 2025-06-05 |
| In-service date | 03/2029 → 03/31/2029 | 2026-06-02 | 2026-09-08 |
Every mention
| Date | Document | Project | What the document says about it |
|---|---|---|---|
| 2026-10-06 | TEAC Informational Only - PPL Local Plan Submission of the Supplemental Projects for 2026 p. 19 |
Highspire, PA | “Expand Hummelstown 230kV yard and install two new DBDB 230kV bays” 230kV |
| 2026-10-06 | TEAC Informational Only - PPL Local Plan Submission of the Supplemental Projects for 2026 p. 60 |
Hummelstown 230-69kV Transformer 1 Replacement | “The Hummelstown substation 230-69kV Transformer 1 is approximately 34 years old” 230-69kV |
| 2026-09-17* | SRRTEP Mid-Atlantic PPL local plan submission for 2026 RTEP p. 19 |
Highspire, PA | “Expand Hummelstown 230kV yard and install two new
DBDB 230kV bays” 230kV |
| 2026-09-17* | SRRTEP Mid-Atlantic PPL local plan submission for 2026 RTEP p. 60 |
Hummelstown 230-69kV Transformer 1 Replacement | “replacement of the
existing 230-69kV Hummelstown Transformer 1” 230-69kV |
| 2026-09-08 | TEAC Item 07 - PPL Supplemental Projects p. 10 |
Bressler 230kV Switchyard | “Expand Hummelstown 230kV yard and install two new DBDB 230kV bays” 230kV |
| 2026-05-08 | TEAC Item 06 - PPL Supplemental Projects p. 16 |
Hummelstown 230-69kV Transformer 1 Replacement | “in-kind replacement of the existing 230-69kV Hummelstown Transformer 1” 230-69kV |
| 2026-04-07 | TEAC Item 05 - PPL Supplemental Projects p. 3 |
Hummelstown 230-69kV Transformer 1 Replacement | “The Hummelstown substation 230-69kV Transformer 1 is approximately 34 years old” 230-69kV |
| 2025-06-05 | TEAC Item 05 - PPL Supplemental Projects p. 8 |
Highspire, PA | “Expand Hummelstown 230kV yard and install two new DBDB 230kV bays” 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.