Grid connection · Harford County, Maryland, United States
Conastone 500 kV grid connection (PJM AH1-725 - moved to TC2)
Conastone 500 kV grid connection (PJM AH1-725 - moved to TC2) is a planned grid connection in Harford County, Maryland, United States, with 500 MW of capacity, connected by PJM Interconnection, L.L.C.
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 | Harford County (connects at Conastone 500 kV) | PJM New Services Queue · Free reuse · checked 24 Oct 2026 |
| Status | Planned (active) | PJM New Services Queue · Free reuse · checked 24 Oct 2026 |
| Capacity | 500 MW | PJM New Services Queue · Free reuse · checked 24 Oct 2026 |
| Technology | Storage | 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 | 9 Apr 2025 | PJM New Services Queue · Free reuse · checked 24 Oct 2026 |
| Connection date | 11 Jun 2029 (proposed) | PJM New Services Queue · Free reuse · checked 24 Oct 2026 |
Research on this grid connection and its grid operator.Who holds it up to the parent company, the project behind it and its connection date, and an introduction to the grid operator.
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
Conastone 500 kV grid connection (PJM AH1-725 - moved to TC2) is the 6th-largest of 78 grid connections in Maryland and the 349th-largest of 4,021 in the United States by capacity; its 500 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 |
|---|---|---|---|
| Maryland | 6th of 78 | 15,314 MW | 3.3% |
| United States | 349th of 4,021 | 923,876 MW | <0.1% |
| All grid connections in our data | 650th of 7,928 | 1,372,494 MW | <0.1% |
Timeline
Dated facts about this grid connection from its sources, oldest first.
- Due to connect
Grid operator and place
More from PJM Interconnection, L.L.C.
- Bruce Mansfield 345 kV grid connection (PJM C01-1243)2,500 MW
- Joshua Falls 765 kV grid connection (PJM C01-1390)2,300 MW
- Rockport - Jefferson 765 kV grid connection (PJM C01-1391)2,300 MW
- Rockport - Jefferson 765 kV grid connection (PJM C01-1392)2,300 MW
- Rockport - Jefferson 765 kV grid connection (PJM C01-1393)2,300 MW
- Sullivan 765 kV grid connection (PJM C01-1394)2,300 MW
- Sullivan 765 kV grid connection (PJM C01-1395)2,300 MW
- Flint Run 500 kV grid connection (PJM AG2-582)2,100 MW
Other grid connections in Maryland
- Chalk Point 230 kV grid connection (PJM AH1-552 - moved to TC2)670 MW
- Chalk Point 230 kV grid connection (PJM AH1-552)670 MW
- Brandywine 230 kV grid connection (PJM C01-1505)620 MW
- Cheltenham 500 kV grid connection (PJM C01-1494)618 MW
- Perryman 115 kV grid connection (PJM C01-1579)555 MW
- Black Oak - Hatfield 500 kV grid connection (PJM C01-1333)500 MW
- Conastone 500 kV grid connection (PJM AH1-725)500 MW
- Dickerson - Quince Orchard 230 kV grid connection (PJM C01-1885)500 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.