TAP139372
SubstationMaryland · DELMARVA POWER
At a glance
TAP139372 is an electric transmission substation in Maryland, on DELMARVA POWER's transmission network. It is classified as distribution (69–115 kv) and connects 3 transmission lines. Substation proximity is one of the strongest speed-to-power signals for siting a datacenter — interconnection distance to an energized, high-voltage bus is often the binding constraint on time-to-energization.
Voltage & classification
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #112190 | 69 kV | DELMARVA POWER | IN SERVICE | 0.1 mi |
| #166633 | 69 kV | DELMARVA POWER | IN SERVICE | 6.9 mi |
| #166634 | 69 kV | DELMARVA POWER | IN SERVICE | 5.4 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP139372, ranked by DC Readiness. Sites this close to an energized substation carry a strong speed-to-power advantage.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| UNKNOWN128238 | Substation-Adjacent | DE | New Castle County | 230 kV | 300 MW | 1.5 yrs | 63.4 |
| UNKNOWN123011 | Substation-Adjacent | MD | Harford County | 230 kV | 300 MW | 5.3 yrs | 62.4 |
| TAP139126 | Substation-Adjacent | MD | Harford County | 230 kV | 300 MW | 5.3 yrs | 61.1 |
| MT. PLEASANT | Substation-Adjacent | DE | New Castle County | 138 kV | 100 MW | 1.5 yrs | 60.5 |
| SUBSTATION #1 | Substation-Adjacent | DE | New Castle County | 138 kV | 100 MW | 1.5 yrs | 60.2 |
| TAP139178 | Substation-Adjacent | DE | New Castle County | 138 kV | 100 MW | 1.5 yrs | 60.1 |
| UNKNOWN128191 | Substation-Adjacent | DE | New Castle County | 138 kV | 100 MW | 1.5 yrs | 59.7 |
| EC Near Delaware City Plant | Greenfield | DE | New Castle | — | — | 1.5 yrs | 59.7 |
Who owns the transmission lines at TAP139372?
The 3 connected lines listed above are owned by DELMARVA POWER. Line voltages range from 69 kV to 69 kV. Their combined recorded length is about 12.4 miles.
How do candidate sites near TAP139372 score?
The 8 highest-scoring candidate sites within about 25 miles range from 60 to 63 on the 0–100 DC Readiness scale. They fall in New Castle County, Harford County, New Castle. The Maryland average across 1,031 scored sites is 52.9. 314 of those Maryland sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
What voltage is TAP139372 substation?
TAP139372 has a maximum voltage of 69 kV. That places it in the 69–114 kV band. The median named US substation in this dataset is 115 kV, so TAP139372 is below the national midpoint.
How many transmission lines connect to TAP139372 substation?
3 transmission lines terminate at or pass through TAP139372 in the HIFLD line data. The connected lines listed here run at 69 kV. Together the listed lines cover about 12.4 miles.
Who owns TAP139372 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP139372 belong to DELMARVA POWER. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP139372 substation located?
TAP139372 is in Maryland at 39.1126, -75.9624. The datacenter candidate sites closest to it are in New Castle County, Harford County, New Castle.
Are there datacenter candidate sites near TAP139372 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP139372. The highest-scoring is UNKNOWN128238 at 63/100. Across Maryland, the average DC Readiness score is 52.9.
More in Maryland
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, “TAP139372 substation, Maryland”, https://gridcensus.com/substations/maryland/tap139372-48977333 (data as of June 29, 2026).
Dataset updated . Screening estimates derived from public data sources.
Substation attributes are derived from public HIFLD / EIA infrastructure data and may lag real-world upgrades or retirements. Voltage and connected-line counts are screening figures — confirm available capacity and interconnection terms directly with the operating utility and ISO.
Go deeper than the public screen
Every site and score for TAP139372 substation, Maryland 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.