State Line
Named in 9 PJM planning documents for 6 projects, from November 6, 2024 to January 16, 2026.
Existingdescribed as
COMEDzone
138 kV, 345 kV, 345/138 kVkV as printed
9mentions
Also printed as: State Line 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 |
|---|---|---|---|---|---|
| State Line 345/138 kV Transformer b3943.1 |
Not printed | $20.81 M | 12/1/2030 | Not printed | 2025-11-14 SRRTEP Western |
| State Line 345/138 kV Transformer | Not printed | $20.81 M | 12/1/2030 | Not printed | 2025-10-17 SRRTEP Western |
| Burnham 345kV BT12-13 CB ComEd-2024-020 · s3587.1 |
Engineering | $2.1M | 12/31/26 | Not printed | 2025-10-08 TEAC |
| Customer in Chicago ComEd-2025-020 |
Engineering | $2.6 M | 8/28/2026 | 179.4 MW | 2025-10-17 SRRTEP Western |
| State Line 345 kV CBs ComEd-2025-025 |
Conceptual | $4M | 12/31/2026 | Not printed | 2025-12-08 TEAC |
| NIPSCO Customer in Chicago ComEd-2025-027 |
Engineering | $ 0M | 6/1/2027 | 260 MW | 2026-01-16 SRRTEP Western |
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 |
|---|---|---|---|
| Status | engineering (Engineering) → cancelled (Withdraw Need) | 2026-01-16 | 2026-09-18 |
Every mention
| Date | Document | Project | What the document says about it |
|---|---|---|---|
| 2026-09-08* | SRRTEP Western ComEd local plan submission of the supplemental projects for 2025 RTEP p. 23 |
Burnham 345kV BT12-13 CB | No role wording 345 kV |
| 2026-01-16 | SRRTEP Western Item 05 - ComEd Supplemental Projects p. 6 |
NIPSCO Customer in Chicago | No role wording 138 kV |
| 2025-12-08 | TEAC Item 09 - ComEd Supplemental Projects p. 5 |
State Line 345 kV CBs | “State Line 345 kV BT oil circuit breakers BT 1-3 & BT 2-4 were
installed in 1971” 345 kV |
| 2025-11-14 | SRRTEP Western Item 01 - SRRTEP West - Reliability Analysis Update p. 21 |
State Line 345/138 kV Transformer | “Install a new 345/138 kV transformer TR 84, and associated
equipment at State Line substation.” 345/138 kV |
| 2025-11-04 | TEAC Item 11 - ComEd Supplemental Projects p. 4 |
State Line 345 kV CBs | “State Line 345 kV BT oil circuit breakers BT 1-3 & BT 2-4 were installed in 1971.” 345 kV |
| 2025-10-17 | SRRTEP Western Item 05 - ComEd Supplemental Projects p. 8 |
Customer in Chicago | “At State Line, install 2 new 138 kV CBs to create 2 line positions” 138 kV |
| 2025-10-17 | SRRTEP Western Item 01 - SRRTEP West - Reliability Analysis Update p. 15 |
State Line 345/138 kV Transformer | “associated equipment at State Line substation” 345/138 kV |
| 2025-10-08 | TEAC Informational Only - ComEd Local Plan Submission of the Supplemental Projects for 2025 p. 23 |
Burnham 345kV BT12-13 CB | No role wording 345 kV |
| 2024-11-06 | TEAC Item 11 - ComEd Supplemental Projects p. 8 |
Burnham 345kV BT12-13 CB | No role wording 345 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.