Montville
Named in 14 PJM planning documents for 12 projects, from October 8, 2024 to October 6, 2026.
Existingdescribed as
JCPLzone
230 kV, 230-34.5 kV, 34.5 kV, 500 kV, 500/230 kVkV as printed
17mentions
Also printed as: Montville 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 |
|---|---|---|---|---|---|
| b2003 Cancellation: Whippany – Montville 230kV b2003 |
Cancelled | $37.5 M | Not printed | Not printed | 2025-02-04 TEAC |
| Montville 500/230 kV Substation b4032.1 |
Not printed | $98.10 M | 11/1/2029 | Not printed | 2026-01-06 TEAC |
| JCPL Transmission Zone M-3 Process Whippany, NJ/Montville, NJ/Greystone, NJ JCPL-2019-024 · s3609.1 |
Not printed | $20.1 M | 06/11/2027 | Not printed | 2025-10-08 TEAC |
| Montville Substation JCPL-2023-050 · s3258.1 |
Not printed | $8.55M | 04/01/2026 | Not printed | 2024-10-08 TEAC |
| Customer Connection JCPL-2024-016 · s3336.1 |
Not printed | $1.45M | 06/30/2024 | Not printed | 2026-09-08* SRRTEP Mid-Atlantic |
| Automatic Restoration Projects JCPL-2024-050 and 052 |
Not printed | Not printed | Not printed | Not printed | 2024-12-12 SRRTEP Mid-Atlantic |
| Automatic Restoration Projects JCPL-2024-052 · s3637.1 |
Not printed | $0.15 M | 07/05/2026 | Not printed | 2025-10-08 TEAC |
| Montville, NJ/Riverdale Substation, NJ JCPL-2025-007 |
Not printed | Not printed | Not printed | Not printed | 2025-12-11 SRRTEP Mid-Atlantic |
| Montville - Whippany 34.5 kV D4 Line JCPL-2026-014 |
Not printed | Not printed | Not printed | Not printed | 2026-04-14 SRRTEP Mid-Atlantic |
| Greystone Substation Breaker Replacements JCPL-2026-045 |
Conceptual | $9.71 M | 12/15/2029 | Not printed | 2026-10-06 TEAC |
| Riverdale Substation, NJ JCPL-2026-046 |
Not printed | Not printed | Not printed | Not printed | 2026-08-13 SRRTEP Mid-Atlantic |
| Montville Substation 2025-W1-140 |
Not printed | $66.83 M | 11/1/2029 | Not printed | 2025-11-04 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 | $40.2 M → $20.1 M | 2025-03-13 | 2025-10-08 |
| Substations named | HALSEY → HALSEY; MONTVILLE; WHIPPANY | 2024-10-08 | Not reported |
| Substations named | FERNDALE; GILBERT; JACKSONVILLE TAP; MONTVILLE → GILBERT | 2024-12-12 | 2026-08-13 |
| Substations named | CHILCOTT; DENVILLE; FOLL HILL; GREYSTONE; WEST DENVILLE → CHILCOTT; DENVILLE; FOLL HILL; GREYSTONE; MONTVILLE; MORRISTOWN; ROCKAWAY; WEST DENVILLE | 2026-08-04 | 2026-10-06 |
Every mention
| Date | Document | Project | What the document says about it |
|---|---|---|---|
| 2026-10-06 | TEAC Item 08 - JCPL Supplemental Projects - Presentation p. 5 |
Greystone Substation Breaker Replacements | No role wording 34.5 kV |
| 2026-09-08* | SRRTEP Mid-Atlantic JCPL local plan submission for 2025 RTEP p. 3 |
JCPL Transmission Zone M-3 Process Whippany, NJ/Montville, NJ/Greystone, NJ | No role wording |
| 2026-09-08* | SRRTEP Mid-Atlantic JCPL local plan submission for 2025 RTEP p. 35 |
Automatic Restoration Projects | “Upgrade line protection at Montville Substation” |
| 2026-09-08* | SRRTEP Mid-Atlantic JCPL local plan submission for 2024 RTEP p. 31 |
Montville Substation | “Replace the 230-34.5 kV No. 3A and 3B transformers at Montville Substation” 230-34.5 kV |
| 2026-09-08* | SRRTEP Mid-Atlantic JCPL local plan submission for 2024 RTEP p. 75 |
Customer Connection | No role wording 34.5 kV |
| 2026-08-13 | SRRTEP Mid-Atlantic Item 02 - JCPL Supplemental Projects p. 11 |
Riverdale Substation, NJ | No role wording 34.5 kV |
| 2026-04-14 | SRRTEP Mid-Atlantic Item 02 - JCPL Supplemental Projects p. 4 |
Montville - Whippany 34.5 kV D4 Line | No role wording 34.5 kV |
| 2026-01-06 | TEAC Item 09 - Reliability Analysis Update p. 16 |
Montville 500/230 kV Substation | “At Montville Substation, install a 500 kV double-bus” 500/230 kV |
| 2025-12-11 | SRRTEP Mid-Atlantic Item 08 - JCPL Supplemental Projects p. 3 |
Montville, NJ/Riverdale Substation, NJ | No role wording |
| 2025-11-04 | TEAC Item 14 - Reliability Analysis Update p. 27 |
Montville Substation | “At Montville Substation, install a 500 kV three breaker ring bus” 500 kV |
| 2025-10-08 | TEAC Informational Only - JCPL Local Plan Submission of the Supplemental Projects for 2025 p. 3 |
JCPL Transmission Zone M-3 Process Whippany, NJ/Montville, NJ/Greystone, NJ | No role wording 34.5 kV |
| 2025-10-08 | TEAC Informational Only - JCPL Local Plan Submission of the Supplemental Projects for 2025 p. 35 |
Automatic Restoration Projects | “Upgrade line protection at Montville Substation” 34.5 kV |
| 2025-04-10 | SRRTEP Mid-Atlantic Item 02 - JCPL Supplemental Projects p. 12 |
Automatic Restoration Projects | “Upgrade line protection at Montville Substation” |
| 2025-03-13 | SRRTEP Mid-Atlantic Item 05 - JCPL Supplemental Projects p. 9 |
JCPL Transmission Zone M-3 Process Whippany, NJ/Montville, NJ/Greystone, NJ | No role wording 34.5 kV |
| 2025-02-04 | TEAC Item 12 - Reliability Analysis Update p. 11 |
b2003 Cancellation: Whippany – Montville 230kV | No role wording 230 kV |
| 2024-12-12 | SRRTEP Mid-Atlantic Item 08 - JCPL Supplemental Projects p. 4 |
Automatic Restoration Projects | No role wording |
| 2024-10-08 | TEAC Informational Only - JCPL Local Plan submission of supplemental project 2024 p. 31 |
Montville Substation | “Replace the 230-34.5 kV No. 3A and 3B transformers at Montville Substation with a single 168 MVA unit.” |
* 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.