TAP146654
SubstationSouth Carolina · SOUTH CAROLINA ELECTRIC&GAS CO
At a glance
TAP146654 is an electric transmission substation in South Carolina, on SOUTH CAROLINA ELECTRIC&GAS CO's transmission network. It is classified as sub-transmission (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 |
|---|---|---|---|---|
| #121150 | 115 kV | SOUTH CAROLINA ELECTRIC&GAS CO | IN SERVICE | 0.1 mi |
| #127177 | 115 kV | SOUTH CAROLINA ELECTRIC&GAS CO | IN SERVICE | 3.1 mi |
| #133296 | 115 kV | SOUTH CAROLINA ELECTRIC&GAS CO | IN SERVICE | 0.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP146654, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN121093 | Substation-Adjacent | SC | Berkeley County | 230 kV | 300 MW | 3.9 yrs | 67.2 |
| UNKNOWN121163 | Substation-Adjacent | SC | Berkeley County | 230 kV | 300 MW | 3.9 yrs | 67.1 |
| UNKNOWN120969 | Substation-Adjacent | SC | Charleston County | 230 kV | 300 MW | 3.9 yrs | 66.8 |
| UNKNOWN120968 | Substation-Adjacent | SC | Charleston County | 230 kV | 300 MW | 3.9 yrs | 66.6 |
| UNKNOWN120970 | Substation-Adjacent | SC | Dorchester County | 230 kV | 300 MW | 3.9 yrs | 66.3 |
| UNKNOWN121119 | Substation-Adjacent | SC | Charleston County | 230 kV | 300 MW | 3.9 yrs | 66.1 |
| UNKNOWN120996 | Substation-Adjacent | SC | Charleston County | 230 kV | 300 MW | 3.9 yrs | 65.9 |
| UNKNOWN123040 | Substation-Adjacent | SC | Berkeley County | 230 kV | 300 MW | 3.9 yrs | 65.9 |
Who owns the transmission lines at TAP146654?
The 3 connected lines listed above are owned by SOUTH CAROLINA ELECTRIC&GAS CO. Line voltages range from 115 kV to 115 kV. Their combined recorded length is about 3.2 miles.
How do candidate sites near TAP146654 score?
The 8 highest-scoring candidate sites within about 25 miles range from 66 to 67 on the 0–100 DC Readiness scale. They fall in Berkeley County, Charleston County, Dorchester 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 TAP146654 substation?
TAP146654 has a maximum voltage of 115 kV. That places it in the 115–229 kV band. The median named US substation in this dataset is 115 kV, so TAP146654 is at the national midpoint.
How many transmission lines connect to TAP146654 substation?
3 transmission lines terminate at or pass through TAP146654 in the HIFLD line data. The connected lines listed here run at 115 kV. Together the listed lines cover about 3.2 miles.
Who owns TAP146654 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP146654 belong to SOUTH CAROLINA ELECTRIC&GAS CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP146654 substation located?
TAP146654 is in South Carolina at 32.8017, -80.0393. The datacenter candidate sites closest to it are in Berkeley County, Charleston County, Dorchester County.
Are there datacenter candidate sites near TAP146654 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP146654. The highest-scoring is UNKNOWN121093 at 67/100. 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, “TAP146654 substation, South Carolina”, https://gridcensus.com/substations/south-carolina/tap146654-9d79a826 (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 TAP146654 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.