Marengo
Named in 2 PJM planning documents for 1 project, from January 16, 2026 to February 13, 2026.
PJM interconnection queue
A PJM queue substation page has the same name: Marengo (IL) — 6 queue requests filed, 1 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 |
|---|---|---|---|---|---|
| Belvidere 138KV BT3-4 and L12205 Relays ComEd-2026-001 |
In service | $200K | 10/31/2025 | Not printed | 2026-02-13 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 |
|---|---|---|---|
| Substations named | BELVIDERE; MARENGO → BELVIDERE; CHRYSLER; MARENGO | 2026-01-16 | 2026-02-13 |
Every mention
| Date | Document | Project | What the document says about it |
|---|---|---|---|
| 2026-02-13 | SRRTEP Western Item 05 - ComEd Supplemental Projects p. 6 |
Belvidere 138KV BT3-4 and L12205 Relays | No role wording |
| 2026-01-16 | SRRTEP Western Item 05 - ComEd Supplemental Projects p. 3 |
Belvidere 138KV BT3-4 and L12205 Relays | No role wording |
* 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.