Substation Scout

PJM Interconnection interconnection queue

Serial and post-reform Cycle (TC1/TC2/C01) interconnection queues across 13 states and DC.

Live feed OK. Updated continuously; source regenerated on demand.

10,138projects tracked
2,915active (non-terminal)
359,762.8active MW
19states covered

Browse & filter all 10,138 projects →

By resource category

Categories are normalised for filtering only. The raw ISO value is shown on every project page — PJM publishes 11 display groups from many more raw strings.

Data quality

No state reported838
No county reported895
No voltage reported1,884
0 MW (net change / energy-only)875
Terminal status (hidden by default)7,223

Top counties by active capacity

CountyActive projectsActive MW
Spencer, IN79,176
Luzerne, PA218,368.3
Fayette, PA206,162.5
Sullivan, IN85,778
Beaver, PA135,701.7
Columbiana, OH75,295.2
Middlesex, NJ365,064.7
Indiana, PA114,617.6
Muskingum, OH74,264.7
Will, IL253,962.4
Carroll, OH63,823.1
Madison, OH133,776.9
Grant, WV103,761.2
Union, NJ223,758.8
Lackawanna, PA103,660.4
Grundy, IL213,631.4
Fauquier, VA203,557
Prince George's, MD143,551.2
Marshall, IN33,468.1
Cumberland, VA63,463
Fluvanna, VA83,264.6
Monongalia, WV63,263.6
Brunswick, VA192,775.6
Lee, IL332,603.7
Lawrence, PA72,521

558 county pages available.

Top substations by active capacity

SubstationActive projectsActive MW
Rockport - Jefferson36,900
Sullivan64,818
Hatfield - Rhodes Lane34,038
Lackawanna - Hopatcong33,454.2
Cunningham - Elmont23,238
Duquesne-PJM33,117
Mount Storm - Valley22,990
Sammis - South Canton32,881.1
AXTON52,690
Sammis - Star32,575
Homer City22,516
Hatfield52,295.8
Rockport32,240
Carson - Rawlings62,205
Bremo32,185
Hunterstown42,131.9
Flint Run12,075
Marysville - Flatlick12,040
Sewaren52,032.2
Linden101,980.1
Beaver Valley - Hanna & Bruce Mansfield - Hanna21,862.2
Guernsey - Vassell21,862.2
Greene - Madison21,862.2
Muskingum River - W. Millersport #1 & #221,862.2
Dumont - Greentown21,862.2

1,621 substation pages available. Pages are generated for substations with two or more projects and a recognisable name; interface tie-points and filing-note text are excluded, but those projects still appear in browse and on their county pages.

Latest weekly digest: digest_2026_08_27.md