TAP171778
SubstationPennsylvania · PPL ELECTRIC UTILITIES CORP
At a glance
TAP171778 is an electric transmission substation in Pennsylvania, on PPL ELECTRIC UTILITIES CORP'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
Ownership
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #174318 | 69 kV | PPL ELECTRIC UTILITIES CORP | IN SERVICE | 10.5 mi |
| #174319 | 69 kV | PPL ELECTRIC UTILITIES CORP | IN SERVICE | 2.3 mi |
| #174512 | 69 kV | PPL ELECTRIC UTILITIES CORP | IN SERVICE | 1.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP171778, 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 |
|---|---|---|---|---|---|---|---|
| SUNBURY | Substation-Adjacent | PA | Northumberland County | 500 kV | 1,000 MW | 3.6 yrs | 66.9 |
| JUNIATA | Substation-Adjacent | PA | Perry County | 500 kV | 1,000 MW | 3.6 yrs | 62.5 |
| UNKNOWN157826 | Substation-Adjacent | PA | Dauphin County | 230 kV | 300 MW | 3.6 yrs | 60.0 |
| UNKNOWN123850 | Substation-Adjacent | PA | Dauphin County | 230 kV | 300 MW | 3.6 yrs | 59.9 |
| EC Dauphin Coal Area | Greenfield | PA | Dauphin | — | — | 3.6 yrs | 59.3 |
| UNKNOWN125205 | Substation-Adjacent | PA | Montour County | 230 kV | 300 MW | 3.6 yrs | 58.2 |
| EC Coal Dauphin County | Greenfield | PA | Dauphin County | — | — | 3.6 yrs | 56.7 |
| EC Coal Dauphin County | Greenfield | PA | Dauphin County | — | — | 3.6 yrs | 56.7 |
Who owns the transmission lines at TAP171778?
The 3 connected lines listed above are owned by PPL ELECTRIC UTILITIES CORP. Line voltages range from 69 kV to 69 kV. Their combined recorded length is about 13.8 miles.
How do candidate sites near TAP171778 score?
The 8 highest-scoring candidate sites within about 25 miles range from 57 to 67 on the 0–100 DC Readiness scale. They fall in Northumberland County, Perry County, Dauphin County, Dauphin. 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
What voltage is TAP171778 substation?
TAP171778 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 TAP171778 is below the national midpoint.
How many transmission lines connect to TAP171778 substation?
3 transmission lines terminate at or pass through TAP171778 in the HIFLD line data. The connected lines listed here run at 69 kV. Together the listed lines cover about 13.8 miles.
Who owns TAP171778 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP171778 belong to PPL ELECTRIC UTILITIES CORP. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP171778 substation located?
TAP171778 is in Pennsylvania at 40.6736, -77.0715. The datacenter candidate sites closest to it are in Northumberland County, Perry County, Dauphin County.
Are there datacenter candidate sites near TAP171778 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP171778. The highest-scoring is SUNBURY at 67/100. 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, “TAP171778 substation, Pennsylvania”, https://gridcensus.com/substations/pennsylvania/tap171778-6e1758b0 (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 TAP171778 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.