TAP171521
SubstationPennsylvania
At a glance
TAP171521 is an electric transmission substation in Pennsylvania. It is classified as unclassified 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
Ownership
No owner is recorded for the lines that connect here.
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #174004 | — | — | IN SERVICE | 4.8 mi |
| #174005 | — | — | IN SERVICE | 0.0 mi |
| #174007 | — | — | IN SERVICE | 5.6 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP171521, 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 |
|---|---|---|---|---|---|---|---|
| CRANBERRY | Substation-Adjacent | PA | Beaver County | 500 kV | 1,000 MW | 3.6 yrs | 65.8 |
| OZ Mahoning | Greenfield | OH | Mahoning | — | — | 5.2 yrs | 64.1 |
| CRESCENT | Substation-Adjacent | PA | Beaver County | 345 kV | 600 MW | 3.6 yrs | 64.0 |
| OZ Mahoning | Greenfield | OH | Mahoning | — | — | 5.2 yrs | 63.6 |
| EC Near Niles Power Plant | Greenfield | OH | Trumbull | — | — | 5.2 yrs | 63.6 |
| EC Coal Mahoning County | Greenfield | OH | Mahoning County | — | — | 5.2 yrs | 63.3 |
| EC Coal Mahoning County | Greenfield | OH | Mahoning County | — | — | 5.2 yrs | 63.3 |
| UNKNOWN113592 | Substation-Adjacent | OH | Hancock County | 345 kV | 600 MW | 5.2 yrs | 63.2 |
How do candidate sites near TAP171521 score?
The 8 highest-scoring candidate sites within about 25 miles range from 63 to 66 on the 0–100 DC Readiness scale. They fall in Beaver County, Mahoning, Trumbull, Mahoning County. The Pennsylvania average across 6,497 scored sites is 51.8. 886 of those Pennsylvania sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
How many transmission lines connect to TAP171521 substation?
3 transmission lines terminate at or pass through TAP171521 in the HIFLD line data. Together the listed lines cover about 10.4 miles.
Where is TAP171521 substation located?
TAP171521 is in Pennsylvania at 40.9289, -80.2930. The datacenter candidate sites closest to it are in Beaver County, Mahoning, Trumbull.
Are there datacenter candidate sites near TAP171521 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP171521. The highest-scoring is CRANBERRY at 66/100. Across Pennsylvania, the average DC Readiness score is 51.8.
More in Pennsylvania
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, “TAP171521 substation, Pennsylvania”, https://gridcensus.com/substations/pennsylvania/tap171521-b732ae96 (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 TAP171521 substation, Pennsylvania 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.