THOMAS ISLAND
SubstationSouth Carolina · SOUTH CAROLINA ELECTRIC&GAS COMPANY
THOMAS ISLAND is an electric transmission substation in South Carolina, operated by SOUTH CAROLINA ELECTRIC&GAS COMPANY. It is classified as sub-transmission (115 kv) and connects 1 transmission line. 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 & operation
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #5791 | 115 kV | SOUTH CAROLINA ELECTRIC&GAS COMPANY | IN SERVICE | 3.3 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of THOMAS ISLAND, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN121163 | Substation-Adjacent | SC | Berkeley County | 230 kV | 300 MW | 3.7 yrs | 76.8 |
| UNKNOWN121120 | Substation-Adjacent | SC | Charleston County | 230 kV | 300 MW | 3.7 yrs | 76.0 |
| UNKNOWN121113 | Substation-Adjacent | SC | Charleston County | 230 kV | 300 MW | 3.7 yrs | 75.7 |
| UNKNOWN121093 | Substation-Adjacent | SC | Berkeley County | 230 kV | 300 MW | 3.7 yrs | 72.8 |
| TAP151839 | Substation-Adjacent | SC | Berkeley County | 115 kV | 100 MW | 3.7 yrs | 72.3 |
| UNKNOWN121593 | Substation-Adjacent | SC | Berkeley County | 115 kV | 100 MW | 3.7 yrs | 72.2 |
| UNKNOWN156701 | Substation-Adjacent | SC | Charleston County | 115 kV | 100 MW | 3.7 yrs | 72.2 |
| TAP142311 | Substation-Adjacent | SC | Berkeley County | 115 kV | 100 MW | 3.7 yrs | 72.0 |
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
This page shows a public slice of the GridCensus dataset for THOMAS ISLAND substation, South Carolina. Pro and Enterprise plans unlock the full 164,098-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.