Grid connection · Dauphin County, Pennsylvania, United States
Three Mile Island 230 kV grid connection (PJM AH1-695)
Three Mile Island 230 kV grid connection (PJM AH1-695) is a planned grid connection in Dauphin County, Pennsylvania, United States, with 859 MW of capacity, held by Constellation Energy Generation, LLC.
Facts
Every value links to its source, and to the source's own record where it has one. Licences and last-checked dates are per row.
| Fact | Value | Source |
|---|---|---|
| Location | Dauphin County (connects at Three Mile Island 230 kV) | PJM New Services Queue · Free reuse · checked 24 Oct 2026 |
| Status | Planned (active, cluster TC2 Phase 3) | PJM New Services Queue · Free reuse · checked 24 Oct 2026 |
| Holder | Constellation Energy Generation, LLC | PJM New Services Queue · Free reuse · checked 24 Oct 2026 |
| Capacity | 859 MW | PJM New Services Queue · Free reuse · checked 24 Oct 2026 |
| Technology | Nuclear | PJM New Services Queue · Free reuse · checked 24 Oct 2026 |
| Grid operator | PJM Interconnection, L.L.C. | PJM New Services Queue · Free reuse · checked 24 Oct 2026 |
| Queue date | 3 Apr 2025 | PJM New Services Queue · Free reuse · checked 24 Oct 2026 |
| Connection date | 1 Oct 2027 (proposed) | PJM New Services Queue · Free reuse · checked 24 Oct 2026 |
Research on this grid connection and its holder.Who holds it up to the parent company, the project behind it and its connection date, and an introduction to the holder.
Request researchLatest events
Dated events about this grid connection from official notices and registers, newest first. All recent changes.
- Entered the connection queue
How it compares
Three Mile Island 230 kV grid connection (PJM AH1-695) is the 18th-largest of 204 grid connections in Pennsylvania and the 149th-largest of 4,021 in the United States by capacity; its 859 MW is <0.1% of the 923,876 MW we hold for the United States. Ranks and totals cover the grid connections in our data that report their capacity, not every one in existence.
| Within | Rank | Total | Share |
|---|---|---|---|
| Pennsylvania | 18th of 204 | 46,972 MW | 1.8% |
| United States | 149th of 4,021 | 923,876 MW | <0.1% |
| All grid connections in our data | 375th of 7,928 | 1,372,494 MW | <0.1% |
Timeline
Dated facts about this grid connection from its sources, oldest first.
- Due to connect
Holder, grid operator and place
More from Constellation Energy Generation, LLC
- Limerick 500 kV grid connection (PJM C01-1055)382 MW
- LaSalle 345 kV grid connection (PJM C01-1260)180 MW
- Lasalle 345 kV grid connection (PJM AH1-714)169 MW
- Braidwood 345 kV grid connection (PJM AH1-698)130 MW
- Byron 345 kV grid connection (PJM AH1-702)88 MW
- Byron Station 6 345 kV grid connection (PJM C01-1980)46 MW
- Braidwood Station 20 345 kV grid connection (PJM C01-1979)42 MW
- Dresden 345 kV grid connection (PJM C01-1053)32 MW
Other grid connections in Pennsylvania
- Bruce Mansfield 345 kV grid connection (PJM C01-1243)2,500 MW
- Homer City 345 kV grid connection (PJM C01-1097)1,736 MW
- Lackawanna - Hopatcong 500 kV grid connection (PJM C01-1193)1,500 MW
- Susquehanna T10 - Susquehanna 230 kV grid connection (PJM C01-1195)1,500 MW
- Shenango - McClelland 345 kV grid connection (PJM C01-1594)1,489 MW
- Susquehanna - Mountain 230 kV & Susquehanna T10 - Mountain 230 kV grid connection (PJM C01-1592)1,486 MW
- Tomhicken 230 kV grid connection (PJM C01-1590)1,486 MW
- Collier - Clinton 345 kV grid connection (PJM C01-1440)1,465 MW
Data on this page
- California ISO. CAISO queue report, CAISO Privacy and Terms of Use.
- SP Electricity North West, via Northern Powergrid Open Data. SP Electricity North West open data portal, CC BY 4.0.
- ERCOT GIS report. ERCOT GIS report, ERCOT Terms of Use.
- Supported by National Energy SO Open Data. NESO TEC Register, NESO Open Data Licence v1.0.
- Supported by Northern Powergrid Open Data. Northern Powergrid open data portal, Northern Powergrid Open Data Licence v1.0.
- NYISO interconnection queue. NYISO interconnection queue, Free reuse.
- PJM New Services Queue. PJM New Services Queue, Free reuse.
- SP Energy Networks, via Northern Powergrid Open Data. SP Energy Networks open data portal, CC BY 4.0.
- SSEN Distribution. SSEN Distribution data portal, CC BY 4.0.