YEMASSEE
SubstationSouth Carolina · SCE&G
YEMASSEE is an electric transmission substation in South Carolina, operated by SCE&G. It is classified as high-voltage (230 kv) and connects 10 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 & 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 |
|---|---|---|---|---|
| #58366 | 230 kV | SOUTH CAROLINA ELECTRIC&GAS CO | IN SERVICE | 38.2 mi |
| #15909 | 230 kV | SOUTH CAROLINA ELECTRIC&GAS COMPANY | IN SERVICE | 17.8 mi |
| #18307 | 230 kV | SCE&G | IN SERVICE | 30.3 mi |
| #48563 | 230 kV | SOUTH CAROLINA ELECTRIC&GAS CO | IN SERVICE | 2.9 mi |
| #48696 | 230 kV | SOUTH CAROLINA ELECTRIC&GAS CO | IN SERVICE | 17.1 mi |
| #58362 | 230 kV | SOUTH CAROLINA ELECTRIC&GAS CO | IN SERVICE | 31.2 mi |
| #15922 | 115 kV | SOUTH CAROLINA ELECTRIC&GAS CO | IN SERVICE | 20.8 mi |
| #15882 | 115 kV | SOUTH CAROLINA ELECTRIC&GAS COMPANY | IN SERVICE | 21.4 mi |
| #40943 | 115 kV | SOUTH CAROLINA ELECTRIC&GAS COMPANY | IN SERVICE | 0.7 mi |
| #58355 | 115 kV | SOUTH CAROLINA ELECTRIC&GAS CO | IN SERVICE | 20.6 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of YEMASSEE, 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 |
|---|---|---|---|---|---|---|---|
| MCINTOSH COMBINED CYCLE FACILITY | Substation-Adjacent | GA | Effingham County | 230 kV | 300 MW | 3.7 yrs | 75.1 |
| EFFINGHAM COUNTY POWER PROJECT | Substation-Adjacent | GA | Effingham County | 230 kV | 300 MW | 3.7 yrs | 74.6 |
| BLANDFORD | Substation-Adjacent | GA | Effingham County | 500 kV | 1,000 MW | 3.7 yrs | 74.3 |
| UNKNOWN112088 | Substation-Adjacent | GA | Effingham County | 230 kV | 300 MW | 3.7 yrs | 73.1 |
| BURTON | Substation-Adjacent | SC | Beaufort County | 230 kV | 300 MW | 3.7 yrs | 72.7 |
| WEST MCINTOSH | Substation-Adjacent | GA | Effingham County | 500 kV | 1,000 MW | 3.7 yrs | 72.2 |
| UNKNOWN120914 | Substation-Adjacent | SC | Hampton County | 230 kV | 300 MW | 3.7 yrs | 72.2 |
| SANTEE COOPER | Substation-Adjacent | SC | Beaufort County | 230 kV | 300 MW | 3.7 yrs | 71.4 |
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 YEMASSEE 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.