Ontario
Named in 5 PJM planning documents for 3 projects, from October 8, 2024 to October 16, 2026.
Existingdescribed as
ATSIzone
138 kVkV as printed
5mentions
Also printed as: Ontario 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
Galion – Ontario 138 kV Line Customer Connection ATSI-2024-045 · s3525.1 |
Not printed | $1.04 M | 7/14/2025 | 63 MVA | 2024-10-08 TEAC |
| Longview Substation ATSI-2026-027 |
Not printed | Not printed | Not printed | 80 MW | 2026-07-17 SRRTEP Western |
| New Customer Connection ATSI-2026-059 |
Conceptual | $1.57 M | 06/26/2028 | 10 MW | 2026-10-16 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 |
|---|---|---|---|
| In-service date | 11/19/2027 → 06/26/2028 | 2026-09-18 | 2026-10-16 |
Every mention
| Date | Document | Project | What the document says about it |
|---|---|---|---|
| 2026-10-16 | SRRTEP Western Item 02 - ATSI Supplemental Projects Presentation p. 11 |
New Customer Connection | “relay settings review required at Longview and Ontario substations.” 138 kV |
| 2026-09-18 | SRRTEP Western Item 02 - ATSI Supplemental Projects p. 3 |
New Customer Connection | No role wording 138 kV |
| 2026-09-08* | SRRTEP Western ATSI local plan submission of the supplemental projects for 2024 RTEP p. 104 |
ATSI Transmission Zone M-3 Process Galion – Ontario 138 kV Line Customer Connection | “Adjust relay settings at Galion and Ontario substations” |
| 2026-07-17 | SRRTEP Western Item 03 - ATSI Supplemental Projects p. 4 |
Longview Substation | No role wording 138 kV |
| 2024-10-08 | TEAC Informational Only - ATSI Local Plan submission of supplemental project 2024 p. 104 |
ATSI Transmission Zone M-3 Process Galion – Ontario 138 kV Line Customer Connection | “Adjust relay settings at Galion and Ontario substations” 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.