RISER146669
SubstationSouth Carolina · DUKE ENERGY PROGRESS - (NC)
At a glance
RISER146669 is an electric transmission substation in South Carolina, on DUKE ENERGY PROGRESS - (NC)'s transmission network. It is classified as sub-transmission (115 kv) and connects 2 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 |
|---|---|---|---|---|
| #141220 | 115 kV | DUKE ENERGY PROGRESS - (NC) | — | 1.9 mi |
| #146016 | 115 kV | DUKE ENERGY PROGRESS - (NC) | IN SERVICE | 0.4 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of RISER146669, 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 |
|---|---|---|---|---|---|---|---|
| Myrtle Beach Landfill | Brownfield | SC | Horry | 115 kV | 2 MW | 3.9 yrs | 66.5 |
| UNKNOWN120844 | Substation-Adjacent | SC | Horry County | 230 kV | 300 MW | 3.9 yrs | 66.5 |
| UNKNOWN146834 | Substation-Adjacent | SC | Horry County | 230 kV | 300 MW | 3.9 yrs | 66.3 |
| UNKNOWN133862 | Substation-Adjacent | SC | Horry County | 230 kV | 300 MW | 3.9 yrs | 65.9 |
| EC Near Horry Land Fill Gas Site | Greenfield | SC | Horry | — | — | 3.9 yrs | 65.7 |
| TAP146858 | Substation-Adjacent | SC | Horry County | 115 kV | 100 MW | 3.9 yrs | 63.6 |
| TAP146870 | Substation-Adjacent | SC | Horry County | 115 kV | 100 MW | 3.9 yrs | 63.6 |
| KONIG | Substation-Adjacent | SC | Horry County | 115 kV | 100 MW | 3.9 yrs | 63.6 |
Who owns the transmission lines at RISER146669?
The 2 connected lines listed above are owned by DUKE ENERGY PROGRESS - (NC). Line voltages range from 115 kV to 115 kV. Their combined recorded length is about 2.4 miles.
How do candidate sites near RISER146669 score?
The 8 highest-scoring candidate sites within about 25 miles range from 64 to 67 on the 0–100 DC Readiness scale. They fall in Horry, Horry 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 RISER146669 substation?
RISER146669 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 RISER146669 is at the national midpoint.
How many transmission lines connect to RISER146669 substation?
2 transmission lines terminate at or pass through RISER146669 in the HIFLD line data. The connected lines listed here run at 115 kV. Together the listed lines cover about 2.4 miles.
Who owns RISER146669 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at RISER146669 belong to DUKE ENERGY PROGRESS - (NC). GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is RISER146669 substation located?
RISER146669 is in South Carolina at 33.4260, -79.1872. The datacenter candidate sites closest to it are in Horry, Horry County.
Are there datacenter candidate sites near RISER146669 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of RISER146669. The highest-scoring is Myrtle Beach Landfill 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, “RISER146669 substation, South Carolina”, https://gridcensus.com/substations/south-carolina/riser146669-a6cd7805 (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 RISER146669 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.