Electric Substations in Delaware
39 named substations in Delaware, with the highest-voltage facilities listed first. Each substation profile shows voltage class, connected transmission lines, and the datacenter candidate sites closest to it.
At a glance
How is Delaware's substation network split by voltage?
By maximum voltage, the named substations break down as 2 at 500 kV and above; 4 at 230–344 kV; 19 at 115–229 kV; 9 at 69–114 kV; 5 withvoltage not recorded. 5% of Delaware's named substations operate at 345 kV or above, against 8% across all 16,654 named US substations. The state median of 138 kV is above the national median of 115 kV.
How does Delaware compare with other states?
Delaware ranks 47th of 50 states and DC by number of named substations and 46th by named substations at 345 kV or above. It also has 288 scored datacenter candidate sites with an average DC Readiness score of 57.1 (national average 53), and an average power sub-score of 37.6 against 37.4 nationally. Most of those sites (288) are in the PJM market.
Which substations in Delaware have the highest voltage?
| Substation | Max voltage | Connected lines | Line owner |
|---|---|---|---|
| KEENEY | 500 kV | 8 | DELMARVA POWER |
| RED LION | 500 kV | 7 | DELMARVA POWER |
| CARTANZA | 230 kV | 7 | DELMARVA POWER |
| CLAYMONT | 230 kV | 4 | DELMARVA POWER |
| EDGEMOOR | 230 kV | 12 | DELMARVA POWER |
| HARMONY | 230 kV | 5 | DELMARVA POWER |
| ANGOLA | 138 kV | 1 | DELMARVA POWER |
| BASIN ROAD | 138 kV | 6 | DELMARVA POWER |
| BAYARD | 138 kV | 2 | DELMARVA POWER |
| BRANDYWINE | 138 kV | 3 | DELMARVA POWER |
| CARRCROFT | 138 kV | 4 | DELMARVA POWER |
| CHRISTIANA | 138 kV | 3 | DELMARVA POWER |
| GLASGOW | 138 kV | 3 | DELMARVA POWER |
| KIAMENSI | 138 kV | 6 | DELMARVA POWER |
| MILLTOWN | 138 kV | 2 | DELMARVA POWER |
| MT. PLEASANT | 138 kV | 3 | DELMARVA POWER |
| NEW CASTLE | 138 kV | 5 | DELMARVA POWER |
| REHOBOTH | 138 kV | 1 | DELMARVA POWER |
| ROBINSONVILLE | 138 kV | 3 | DELMARVA POWER |
| SILVER SIDE ROAD | 138 kV | 3 | DELMARVA POWER |
| SILVERBROOK | 138 kV | 2 | DELMARVA POWER |
| SUBSTATION #1 | 138 kV | 1 | DELMARVA POWER |
| SUNSET LAKE | 138 kV | 5 | DELMARVA POWER |
| WEST | 138 kV | 3 | DELMARVA POWER |
| WHARTON | 138 kV | 2 | DELMARVA POWER |
| BRIDGEVILLE | 69 kV | 2 | DELMARVA POWER |
| CITISTEEL | 69 kV | 2 | DELMARVA POWER |
| CONCORD I SWITCHING STATION | 69 kV | 2 | DELMARVA POWER |
| LAUREL | 69 kV | 4 | DELMARVA POWER |
| PEPPER | 69 kV | 1 | DELMARVA POWER |
| TAYLOR | 69 kV | 1 | DELMARVA POWER |
| VAUGHN | 69 kV | 1 | DELMARVA POWER |
| VERNON | 69 kV | 1 | DELMARVA POWER |
| WORKMAN | 69 kV | 1 | DELMARVA POWER |
| BENNETT | — | 1 | DELMARVA POWER |
| HARBESON | — | 2 | DELMARVA POWER |
| LANK | — | 2 | DELMARVA POWER |
| MAIN | — | 1 | DELMARVA POWER |
| ZOAR SWITCHING STATION | — | 2 | DELMARVA POWER |
Every named substation in Delaware
All 39 named substations, grouped by voltage band.
115–229 kV · 19
voltage not recorded · 5
Frequently asked questions
How many electric substations are in Delaware?
HIFLD records 173 substations in Delaware, of which 39 carry a station name. That is the 47th-most named substations of any state in the dataset.
What is the highest-voltage substation in Delaware?
2 named substations in Delaware share the top voltage of 500 kV, including KEENEY, RED LION.
Which substation in Delaware connects the most transmission lines?
EDGEMOOR has the most connected transmission lines of the named substations listed here, with 12 at up to 230 kV.
How many substations in Delaware are 345 kV or higher?
2 of 39 named substations (5%) operate at 345 kV or above, compared with 8% nationally. Delaware ranks 46th of 50 states and DC for named substations at that level.
How many datacenter candidate sites in Delaware are at substations?
73 of the 288 scored candidate sites in Delaware are substation sites — locations generated at an existing substation. Scored sites across Delaware average 57.1 on the 0–100 DC Readiness scale, against 53 nationally.
Looking for a specific record? The directory lists every substation in Delaware, A to Z.
More on Delaware, and states with similar counts
About this data
Source: HIFLD Electric Substations and Transmission Lines (U.S. Department of Homeland Security), as published June 29, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “Electric substations in Delaware”, https://gridcensus.com/substations/delaware (data as of June 29, 2026).
Dataset updated . Screening estimates derived from public data sources.
Go deeper than the public screen
Every site and score for substations in Delaware is free to browse. Pro adds Watchtower on 25 sites, alerts when new candidate sites, datacenters or interconnection-queue requests appear in your markets, score and capacity history, and CSV export. Enterprise adds team seats, weekly data files for all 147,272 sites, the REST API and an MCP server for AI tools.