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

TechnologyProjectsRequested capacity
Gas103,621 MW
Battery31,020 MW
Other19805 MW
Solar21160 MW
Solar+Battery150 MW

Projects

ProjectQueue IDTechnologyCapacityStatusLocation
Perryman 230kV/115kVB29Gas750.0 MWwithdrawnHarford, Maryland
Perryman 230kV or 115kVA47Gas740.0 MWwithdrawnHarford, Maryland
Conastone - Peach Bottom 500kVC12Gas550.0 MWwithdrawnHarford, Maryland
Graceton 230kVB48Gas550.0 MWwithdrawnHarford, Maryland
Conastone - Peach Bottom 500kVC13Gas550.0 MWwithdrawnHarford, Maryland
Conastone 500 kVAH1-725 - moved to TC2Battery500.0 MWactiveHarford, Maryland
PJM Queue Project AH1-725 — Battery in Harford, MarylandAH1-725Battery500.0 MWactiveHarford, Maryland
Perryman1556_GT5Gas192.0 MWoperationalHarford, Maryland
Perryman1556_GT6Gas141.0 MWoperationalHarford, Maryland
PerrymanS32Gas130.0 MWoperationalHarford, Maryland
Conowingo1574_11Other55.6 MWoperationalHarford, Maryland
Conowingo1574_8Other55.6 MWoperationalHarford, Maryland
Conowingo1574_10Other55.6 MWoperationalHarford, Maryland
Conowingo1574_9Other55.6 MWoperationalHarford, Maryland
Perryman1556_GT4Other53.1 MWoperationalHarford, Maryland
Perryman1556_GT3Other53.1 MWoperationalHarford, Maryland
Perryman1556_GT1Other53.1 MWoperationalHarford, Maryland
Graceton 230 kVAG2-587 - moved to TC2Solar50.0 MWwithdrawnHarford, Maryland
PJM Queue Project AG2-587 — Solar+Battery in Harford, MarylandAG2-587Solar+Battery50.0 MWwithdrawnHarford, Maryland
Conowingo1574_3Other48.0 MWoperationalHarford, Maryland
Conowingo1574_7Other48.0 MWoperationalHarford, Maryland
Conowingo1574_6Other47.7 MWoperationalHarford, Maryland
Conowingo1574_4Other47.7 MWoperationalHarford, Maryland
Conowingo 230kVY3-120Other45.0 MWwithdrawnHarford, Maryland
Conowingo1574_1Other45.0 MWoperationalHarford, Maryland
Conowingo1574_2Other36.0 MWoperationalHarford, Maryland
Conowingo1574_5Other36.0 MWoperationalHarford, Maryland
Conowingo 230kVB46Other36.0 MWoperationalHarford, Maryland
Fairview Farms68262_FVFPVSolar30.0 MWoperationalHarford, Maryland
ConowingoR89Other24.0 MWoperationalHarford, Maryland
GracetonT170Battery20.0 MWwithdrawnHarford, Maryland
Perryman SolarY2-117Solar20.0 MWwithdrawnHarford, Maryland
Otter Point 34.5 kV IIAF1-300Solar15.0 MWoperationalHarford, Maryland
Otter Point 34.5 kV IAF1-299Solar15.0 MWoperationalHarford, Maryland
PerrymanT147Gas10.0 MWoperationalHarford, Maryland
Perryman 115kVG30Other10.0 MWoperationalHarford, Maryland
APG Combined Heat and Power Plant61282_GEN1Gas7.9 MWoperationalHarford, Maryland
Rock Ridge 13kVAB2-140Solar3.0 MWwithdrawnHarford, Maryland
APG New Chesapeake62629_10115Solar2.3 MWoperationalHarford, Maryland
Archdiocese of Baltimore L60663_PV1Solar2.0 MWoperationalHarford, Maryland
Sod Run WTP A60669_PV1Solar2.0 MWoperationalHarford, Maryland
Archdiocese of Baltimore J60662_PV1Solar2.0 MWoperationalHarford, Maryland
Baltimore City B60664_PV1Solar2.0 MWoperationalHarford, Maryland
Baltimore City G60667_PV1Solar2.0 MWoperationalHarford, Maryland
Baltimore City D60665_PV1Solar2.0 MWoperationalHarford, Maryland
City of Havre De Grace C60668_PV1Solar2.0 MWoperationalHarford, Maryland
Baltimore City F60666_PV1Solar2.0 MWoperationalHarford, Maryland
Macy's MD Joppa Solar Project62323_MMDJSolar1.8 MWoperationalHarford, Maryland
APG Old Bayside62628_10115Solar1.7 MWoperationalHarford, Maryland
The Clorox Company60461_PV1Solar1.6 MWoperationalHarford, Maryland
Havre de Grace II - E at Perryman60708_PV1Solar1.4 MWoperationalHarford, Maryland
McCormick & Co. Inc. at Belcamp57646_PV1Solar1.4 MWoperationalHarford, Maryland
Kingsville 13kVAA2-072Solar1.1 MWoperationalHarford, Maryland
Conastone-Northwest 230kVAA2-042OtherwithdrawnHarford, Maryland

Top developers

Developer (canonical)ProjectsCapacity
Old Line Energy, LLC150 MW
Cardinal Energy Storage East, LLC1500 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