Harford County, Maryland — Interconnection Projects
The interXdata warehouse tracks 54 interconnection projects in Harford, Maryland, representing 5,656 MW of requested capacity.
54Total projects
2Active
40Operational
12Withdrawn
5,656 MWRequested capacity
Technology mix
| Technology | Projects | Requested capacity |
|---|---|---|
| Gas | 10 | 3,621 MW |
| Battery | 3 | 1,020 MW |
| Other | 19 | 805 MW |
| Solar | 21 | 160 MW |
| Solar+Battery | 1 | 50 MW |
Projects
| Project | Queue ID | Technology | Capacity | Status | Location |
|---|---|---|---|---|---|
| Perryman 230kV/115kV | B29 | Gas | 750.0 MW | withdrawn | Harford, Maryland |
| Perryman 230kV or 115kV | A47 | Gas | 740.0 MW | withdrawn | Harford, Maryland |
| Conastone - Peach Bottom 500kV | C12 | Gas | 550.0 MW | withdrawn | Harford, Maryland |
| Graceton 230kV | B48 | Gas | 550.0 MW | withdrawn | Harford, Maryland |
| Conastone - Peach Bottom 500kV | C13 | Gas | 550.0 MW | withdrawn | Harford, Maryland |
| Conastone 500 kV | AH1-725 - moved to TC2 | Battery | 500.0 MW | active | Harford, Maryland |
| PJM Queue Project AH1-725 — Battery in Harford, Maryland | AH1-725 | Battery | 500.0 MW | active | Harford, Maryland |
| Perryman | 1556_GT5 | Gas | 192.0 MW | operational | Harford, Maryland |
| Perryman | 1556_GT6 | Gas | 141.0 MW | operational | Harford, Maryland |
| Perryman | S32 | Gas | 130.0 MW | operational | Harford, Maryland |
| Conowingo | 1574_11 | Other | 55.6 MW | operational | Harford, Maryland |
| Conowingo | 1574_8 | Other | 55.6 MW | operational | Harford, Maryland |
| Conowingo | 1574_10 | Other | 55.6 MW | operational | Harford, Maryland |
| Conowingo | 1574_9 | Other | 55.6 MW | operational | Harford, Maryland |
| Perryman | 1556_GT4 | Other | 53.1 MW | operational | Harford, Maryland |
| Perryman | 1556_GT3 | Other | 53.1 MW | operational | Harford, Maryland |
| Perryman | 1556_GT1 | Other | 53.1 MW | operational | Harford, Maryland |
| Graceton 230 kV | AG2-587 - moved to TC2 | Solar | 50.0 MW | withdrawn | Harford, Maryland |
| PJM Queue Project AG2-587 — Solar+Battery in Harford, Maryland | AG2-587 | Solar+Battery | 50.0 MW | withdrawn | Harford, Maryland |
| Conowingo | 1574_3 | Other | 48.0 MW | operational | Harford, Maryland |
| Conowingo | 1574_7 | Other | 48.0 MW | operational | Harford, Maryland |
| Conowingo | 1574_6 | Other | 47.7 MW | operational | Harford, Maryland |
| Conowingo | 1574_4 | Other | 47.7 MW | operational | Harford, Maryland |
| Conowingo 230kV | Y3-120 | Other | 45.0 MW | withdrawn | Harford, Maryland |
| Conowingo | 1574_1 | Other | 45.0 MW | operational | Harford, Maryland |
| Conowingo | 1574_2 | Other | 36.0 MW | operational | Harford, Maryland |
| Conowingo | 1574_5 | Other | 36.0 MW | operational | Harford, Maryland |
| Conowingo 230kV | B46 | Other | 36.0 MW | operational | Harford, Maryland |
| Fairview Farms | 68262_FVFPV | Solar | 30.0 MW | operational | Harford, Maryland |
| Conowingo | R89 | Other | 24.0 MW | operational | Harford, Maryland |
| Graceton | T170 | Battery | 20.0 MW | withdrawn | Harford, Maryland |
| Perryman Solar | Y2-117 | Solar | 20.0 MW | withdrawn | Harford, Maryland |
| Otter Point 34.5 kV II | AF1-300 | Solar | 15.0 MW | operational | Harford, Maryland |
| Otter Point 34.5 kV I | AF1-299 | Solar | 15.0 MW | operational | Harford, Maryland |
| Perryman | T147 | Gas | 10.0 MW | operational | Harford, Maryland |
| Perryman 115kV | G30 | Other | 10.0 MW | operational | Harford, Maryland |
| APG Combined Heat and Power Plant | 61282_GEN1 | Gas | 7.9 MW | operational | Harford, Maryland |
| Rock Ridge 13kV | AB2-140 | Solar | 3.0 MW | withdrawn | Harford, Maryland |
| APG New Chesapeake | 62629_10115 | Solar | 2.3 MW | operational | Harford, Maryland |
| Archdiocese of Baltimore L | 60663_PV1 | Solar | 2.0 MW | operational | Harford, Maryland |
| Sod Run WTP A | 60669_PV1 | Solar | 2.0 MW | operational | Harford, Maryland |
| Archdiocese of Baltimore J | 60662_PV1 | Solar | 2.0 MW | operational | Harford, Maryland |
| Baltimore City B | 60664_PV1 | Solar | 2.0 MW | operational | Harford, Maryland |
| Baltimore City G | 60667_PV1 | Solar | 2.0 MW | operational | Harford, Maryland |
| Baltimore City D | 60665_PV1 | Solar | 2.0 MW | operational | Harford, Maryland |
| City of Havre De Grace C | 60668_PV1 | Solar | 2.0 MW | operational | Harford, Maryland |
| Baltimore City F | 60666_PV1 | Solar | 2.0 MW | operational | Harford, Maryland |
| Macy's MD Joppa Solar Project | 62323_MMDJ | Solar | 1.8 MW | operational | Harford, Maryland |
| APG Old Bayside | 62628_10115 | Solar | 1.7 MW | operational | Harford, Maryland |
| The Clorox Company | 60461_PV1 | Solar | 1.6 MW | operational | Harford, Maryland |
| Havre de Grace II - E at Perryman | 60708_PV1 | Solar | 1.4 MW | operational | Harford, Maryland |
| McCormick & Co. Inc. at Belcamp | 57646_PV1 | Solar | 1.4 MW | operational | Harford, Maryland |
| Kingsville 13kV | AA2-072 | Solar | 1.1 MW | operational | Harford, Maryland |
| Conastone-Northwest 230kV | AA2-042 | Other | — | withdrawn | Harford, Maryland |
Top developers
| Developer (canonical) | Projects | Capacity |
|---|---|---|
| Old Line Energy, LLC | 1 | 50 MW |
| Cardinal Energy Storage East, LLC | 1 | 500 MW |
Explore related data
Source last checked2026-07-31
Data last materially changed2026-08-27
Page data generated2026-08-27
Provenance: U.S. EIA — Form EIA-860M generator inventory (operating + planned); Lawrence Berkeley National Laboratory — Queued Up interconnection dataset; PJM — new-services interconnection queue. Values are normalized from public source records into the interXdata canonical warehouse; see each source for original filings.
Get an alert when a new project is proposed in Harford County.
Start tracking with interXdata