Chamberlin
Named in 4 PJM planning documents for 3 projects, from April 15, 2026 to August 4, 2026.
Existingdescribed as
ATSIzone
345 kV, 69 kVkV as printed
4mentions
Also printed as: Chamberlin Substation
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 |
|---|---|---|---|---|---|
| ATSI Transmission Zone M-3 Process
Chamberlin 69 kV Breakers ATSI-2023-028 · s3374.1 |
Engineering | $4.20M | 12/31/2024 | Not printed | 2026-09-08* SRRTEP Western |
| Aurora-Chamberlin No. 1 69 kV Line ATSI-2026-025 |
Not printed | Not printed | Not printed | 120 MWs | 2026-04-15 SRRTEP Western |
| Chamberlin-Harding 345 kV S-21 Line ATSI-2026-048 |
Conceptual | $0.91M | 12/11/2026 | Not printed | 2026-08-04 TEAC |
Every mention
| Date | Document | Project | What the document says about it |
|---|---|---|---|
| 2026-09-08* | SRRTEP Western ATSI local plan submission of the supplemental projects for 2024 RTEP p. 108 |
ATSI Transmission Zone M-3 Process Chamberlin 69 kV Breakers | “At Chamberlin Substation, replace 69 kV circuit breakers B-31, B-39 and B-74” 69 kV |
| 2026-08-04 | TEAC Item 04 - ATSI Supplemental Projects p. 6 |
Chamberlin-Harding 345 kV S-21 Line | “At Chamberlin Station, replace one circuit breaker, disconnect switches, and substation conductor.” 345 kV |
| 2026-07-07 | TEAC Item 05 - ATSI Supplemental Projects p. 3 |
Chamberlin-Harding 345 kV S-21 Line | No role wording 345 kV |
| 2026-04-15 | SRRTEP Western Item 03 - ATSI Supplemental Project p. 3 |
Aurora-Chamberlin No. 1 69 kV Line | No role wording 69 kV |
* 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.