TAP155939
SubstationSouth Carolina · PROGRESS ENERGY CAROLINAS INC
At a glance
TAP155939 is an electric transmission substation in South Carolina, on PROGRESS ENERGY CAROLINAS INC's transmission network. It is classified as high-voltage (230 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 |
|---|---|---|---|---|
| #124846 | 230 kV | PROGRESS ENERGY CAROLINAS INC | IN SERVICE | 8.1 mi |
| #156194 | 230 kV | PROGRESS ENERGY CAROLINAS INC | IN SERVICE | 11.1 mi |
| #156199 | 230 kV | PROGRESS ENERGY CAROLINAS INC | IN SERVICE | 0.1 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP155939, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN121331 | Substation-Adjacent | SC | Williamsburg County | 230 kV | 300 MW | 3.9 yrs | 63.4 |
| UNKNOWN121218 | Substation-Adjacent | SC | Williamsburg County | 230 kV | 300 MW | 3.9 yrs | 62.5 |
| TAP146839 | Substation-Adjacent | SC | Williamsburg County | 230 kV | 300 MW | 3.9 yrs | 62.5 |
| KINGSTREE | Substation-Adjacent | SC | Williamsburg County | 230 kV | 300 MW | 3.9 yrs | 62.4 |
| TAP150893 | Substation-Adjacent | SC | Lee County | 230 kV | 300 MW | 3.9 yrs | 62.0 |
| UNKNOWN151883 | Substation-Adjacent | SC | Lee County | 230 kV | 300 MW | 3.9 yrs | 61.9 |
| UNKNOWN121497 | Substation-Adjacent | SC | Florence County | 230 kV | 300 MW | 3.9 yrs | 61.4 |
| UNKNOWN121224 | Substation-Adjacent | SC | Florence County | 230 kV | 300 MW | 3.9 yrs | 61.4 |
Who owns the transmission lines at TAP155939?
The 3 connected lines listed above are owned by PROGRESS ENERGY CAROLINAS INC. Line voltages range from 230 kV to 230 kV. Their combined recorded length is about 19.2 miles.
How do candidate sites near TAP155939 score?
The 8 highest-scoring candidate sites within about 25 miles range from 61 to 63 on the 0–100 DC Readiness scale. They fall in Williamsburg County, Lee County, Florence County. The South Carolina average across 2,061 scored sites is 57.1. 1,124 of those South Carolina sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
What voltage is TAP155939 substation?
TAP155939 has a maximum voltage of 230 kV. That places it in the 230–344 kV band. The median named US substation in this dataset is 115 kV, so TAP155939 is above the national midpoint.
How many transmission lines connect to TAP155939 substation?
3 transmission lines terminate at or pass through TAP155939 in the HIFLD line data. The connected lines listed here run at 230 kV. Together the listed lines cover about 19.2 miles.
Who owns TAP155939 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP155939 belong to PROGRESS ENERGY CAROLINAS INC. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP155939 substation located?
TAP155939 is in South Carolina at 33.8837, -79.7929. The datacenter candidate sites closest to it are in Williamsburg County, Lee County, Florence County.
Are there datacenter candidate sites near TAP155939 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP155939. The highest-scoring is UNKNOWN121331 at 63/100. Across South Carolina, the average DC Readiness score is 57.1.
More in South Carolina
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, “TAP155939 substation, South Carolina”, https://gridcensus.com/substations/south-carolina/tap155939-d6c72707 (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 TAP155939 substation, South Carolina 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.