Itasca
Named in 7 PJM planning documents for 5 projects, from November 6, 2024 to July 7, 2026.
Existingdescribed as
COMEDzone
138 kV, 138kV, 345/138 kV, 345KVkV as printed
10mentions
Also printed as: Itasca 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 |
|---|---|---|---|---|---|
| Customer in Itasca ComEd-2023-009 · s3581.1 |
Engineering | $9.9M | 12/1/26 | 272.7 MW | 2025-10-08 TEAC |
| Customer in Elk Grove ComEd-2024-003 · s3584.1; s3584.2 |
Engineering | $319.4M | 12/31/2027 (s3584.1), 12/31/2028 (s3584.2) | 250 MW | 2025-09-19 SRRTEP Western |
| Cluster 2 ComEd-2024-004 · s3583.1, s3583.2 |
Engineering | $40.6M | 12/31/2026 (s3583.1), 12/31/2027 (s3583.2) | 260 MW | 2025-10-08 TEAC |
| 345KV STATCOMS ComEd-2024-014, ComEd-2024-022, ComEd-2025-005, ComEd-2025-011, ComEd-2025-013, ComEd-2025-015, ComEd-2025-016, ComEd-2025-020 |
Conceptual | $472.0M | 06/01/2031 | Not printed | 2026-07-07 TEAC |
| Des Plaines 345 kV CBs ComEd-2025-026 |
Conceptual | $3.9M | 12/31/2027 | Not printed | 2025-12-08 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 |
|---|---|---|---|
| Cost estimate | $319.4M → $289.4M | 2025-09-19 | 2025-10-08 |
| Status | engineering (Engineering) → conceptual (Conceptual) | 2025-09-19 | 2025-10-08 |
| Substations named | COMED DIERKING; COMED ELK GROVE EAST; COMED ITASCA; COMED PINE → DIERKING; ELK GROVE EAST; ITASCA; PINE | 2025-10-08 | Not reported |
| Cost estimate | $14.31 M → $40.6M | 2024-12-03 | 2025-10-08 |
| In-service date | 6/1/2029 → 12/31/2026 (s3583.1), 12/31/2027 (s3583.2) | 2024-12-03 | 2025-10-08 |
| Substations named | BUSSE; DES PLAINES; ITASCA → ELK GROVE EAST; ITASCA | 2024-12-03 | 2025-10-08 |
| Cost estimate | $35.3 M → $472.0M | 2025-09-09 | 2026-07-07 |
| In-service date | 5/1/2028 → 06/01/2031 | 2025-09-09 | 2026-07-07 |
| Substations named | LASALLE; PLANO → BRYON; CHARTER GROVE; HIAWATHA; ITASCA; SILVER LAKE; WAYNE | 2025-09-09 | 2026-07-07 |
| Substations named | DES PLAINES → DES PLAINES; ITASCA | 2025-11-04 | 2025-12-08 |
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. 14 |
Cluster 2 | “install 2 new 345/138 kV, 420 MVA autotransformers at Itasca substation” 345/138 kV |
| 2026-09-08* | SRRTEP Western ComEd local plan submission of the supplemental projects for 2025 RTEP p. 17 |
Customer in Elk Grove | “underground lines from ComEd Itasca substation” 138kV |
| 2026-09-08* | SRRTEP Western ComEd local plan submission of the supplemental projects for 2025 RTEP p. 9 |
Customer in Itasca | “expanding the bus at Itasca with 2 new bays” 138 kV |
| 2026-07-07 | TEAC Item 12 - ComEd Supplemental Projects p. 13 |
345KV STATCOMS | “Install +/-350 MVAR 345KV STATCOM, 1-150 MVAR 345KV Capacitor
Banks and three associated 345KV Circuit Breakers at Itasca Substation” 345KV |
| 2025-12-08 | TEAC Item 09 - ComEd Supplemental Projects p. 8 |
Des Plaines 345 kV CBs | No role wording |
| 2025-10-08 | TEAC Informational Only - ComEd Local Plan Submission of the Supplemental Projects for 2025 p. 14 |
Cluster 2 | “Install 2 new 345 kV CBs, 2 new 138 kV CBs and install 2 new 345/138 kV, 420 MVA autotransformers at Itasca substation” 345/138 kV |
| 2025-10-08 | TEAC Informational Only - ComEd Local Plan Submission of the Supplemental Projects for 2025 p. 9 |
Customer in Itasca | “expanding the bus at Itasca with 2 new bays” 138 kV |
| 2025-09-19 | SRRTEP Western Item 04 - ComEd Supplemental Projects p. 8 |
Customer in Elk Grove | “lines from ComEd Itasca substation” 138kV |
| 2024-12-03 | TEAC Item 11 - Reliability Analysis Update p. 57 |
Cluster 2 | “circuit breakers at Itasca substation” 345/138 kV |
| 2024-11-06 | TEAC Item 13 - Reliability Analysis Update p. 38 |
Cluster 2 | “circuit breakers at Itasca substation” 345/138 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.