interXdata

Maryland Interconnection Projects

interXdata tracks 997 interconnection projects in Maryland representing 74,091 MW of requested capacity. The dominant technology by capacity is Gas. The most active counties are Montgomery, Wicomico, Dorchester.

997Total projects
32Active
455Operational
502Withdrawn
74,091 MWRequested capacity
4,986 MWActive capacity

Technology mix

TechnologyProjectsRequested capacity
Gas20641,875 MW
Other12811,633 MW
Solar5399,642 MW
Battery938,098 MW
Wind261,959 MW
Solar+Battery3762 MW
Oil1108 MW
Hydro114 MW

Counties

CountyProjectsRequested capacity
Montgomery594,484 MW
Wicomico57432 MW
Dorchester551,657 MW
Prince Georges553,108 MW
Harford545,656 MW
Charles5318,444 MW
Prince George's528,497 MW
Somerset48900 MW
Queen Anne's481,201 MW
Washington47444 MW
Garrett442,431 MW
Worcester421,413 MW
Frederick403,671 MW
Cecil394,188 MW
Howard3865 MW
Anne Arundel353,226 MW
Talbot34225 MW
Baltimore County312,307 MW
Baltimore27478 MW
Baltimore City26468 MW
Allegany23954 MW
Kent22353 MW
Caroline201,161 MW
Calvert157,110 MW
Queen Annes9167 MW
St. Mary's9518 MW
Unknown7501 MW
Carroll627 MW
Prince Geroges13 MW
N/a11 MW

Largest projects

ProjectQueue IDTechnologyCapacityStatusLocation
Morgantown / Oak GroveK08Gas1,800.0 MWwithdrawnCharles, Maryland
Morgantown-Oak GroveM01Gas1,800.0 MWwithdrawnCharles, Maryland
Morgantown / Oak GroveL01Gas1,800.0 MWwithdrawnCharles, Maryland
Calvert CliffsQ77Other1,640.0 MWwithdrawnCalvert, Maryland
Calvert CliffsQ48Other1,640.0 MWwithdrawnCalvert, Maryland
Calvert Cliffs 500kVV2-042Other1,640.0 MWwithdrawnCalvert, Maryland
Talbert 230kVS18Gas1,250.0 MWwithdrawnCharles, Maryland
Morgantown 230 kVAI2-457Battery1,122.0 MWwithdrawnCharles, Maryland
Burches Hill-Possum Point 500kVX3-102Gas971.2 MWwithdrawnCharles, Maryland
Oakgrove-Morgantown 230kVX3-103Gas971.2 MWwithdrawnCharles, Maryland
Calvert Cliffs Nuclear Power Plant6011_2Other932.4 MWoperationalCalvert, Maryland
Calvert Cliffs Nuclear Power Plant6011_1Other918.0 MWoperationalCalvert, Maryland
Dickerson 230kVG50Gas910.0 MWwithdrawnFrederick, Maryland
Morgantown-Oak GroveS29Gas900.0 MWwithdrawnCharles, Maryland
Burches Hill-Brandywine 230kVX3-087Gas894.0 MWwithdrawnPrince George's, Maryland
Rock Springs 500kVY1-065Gas834.1 MWoperationalCecil, Maryland
Morgantown-Oak Grove 230kVX2-030Gas830.0 MWwithdrawnCharles, Maryland
Aquasco 230kVX4-026Gas792.0 MWwithdrawnPrince George's, Maryland
Burches HillW1-034Gas750.0 MWwithdrawnPrince George's, Maryland
Burches Hill 500kVV3-001Gas750.0 MWwithdrawnPrince George's, Maryland
Perryman 230kV/115kVB29Gas750.0 MWwithdrawnHarford, Maryland
Perryman 230kV or 115kVA47Gas740.0 MWwithdrawnHarford, Maryland
Burches Hill-Chalk Point 500kVX4-035Gas735.5 MWoperationalPrince George's, Maryland
Morgantown-Oak GroveV3-017Gas725.0 MWoperationalCharles, Maryland
Kelson Ridge 230kVW4-044Gas725.0 MWwithdrawnCharles, Maryland
Brandon Shores602_2Other685.1 MWoperationalAnne Arundel, Maryland
Brandon Shores602_1Other685.1 MWoperationalAnne Arundel, Maryland
Chalk Point 230 kVAH1-552 - moved to TC2Solar670.2 MWactivePrince George's, Maryland
PJM Queue Project AH1-552 — Solar+Battery in Prince George's, MarylandAH1-552Solar+Battery670.2 MWactivePrince George's, Maryland
Doubs 500 kV or 230 kVG00_W39Gas668.0 MWwithdrawnFrederick, Maryland

Top developers in Maryland

Developer (canonical)ProjectsCapacity
Old Line Energy, LLC3120 MW
Richfield Solar Energy LLC231 MW
RWE Solar Development, LLC2125 MW
Chalk Point Steam, LLC2778 MW
Cardinal Energy Storage East, LLC21,100 MW
Church Storage LLC150 MW
Concho Pearl Solar, LLC120 MW
Forest Lane Solar, LLC120 MW
TODD SOLAR14 MW
Crockett Solar I, LLC120 MW
Kumquat & Citron Cleantech LLC17 MW
Fourth Quarter BESS, LLC1500 MW
Great Bay Solar I LLC130 MW
Dairy Farm Solar, L.L.C.155 MW
Fairlawn Hydroelectric Company, LLC114 MW

Recent material changes

No material field-level changes have been recorded against these projects since the baseline snapshot. interXdata records changes as new source snapshots are ingested and diffed.

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.

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