LEWIS SMITH DAM
SubstationAlabama · ALABAMA POWER CO
LEWIS SMITH DAM is an electric transmission substation in Alabama, operated by ALABAMA POWER CO. It is classified as sub-transmission (138 kv) and connects 4 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #28079 | 161 kV | ALABAMA POWER CO | IN SERVICE | 0.7 mi |
| #29883 | 161 kV | ALABAMA POWER CO | — | 0.0 mi |
| #33479 | 161 kV | ALABAMA POWER CO | IN SERVICE | 3.4 mi |
| #53093 | 161 kV | ALABAMA POWER CO | IN SERVICE | 8.2 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of LEWIS SMITH DAM, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN109244 | Substation-Adjacent | AL | Jefferson County | 500 kV | 1,000 MW | 1.4 yrs | 77.1 |
| UNKNOWN109244 | Substation-Adjacent | AL | Jefferson County | 500 kV | 1,000 MW | 3.7 yrs | 76.0 |
| TAP142723 | Substation-Adjacent | AL | Jefferson County | 230 kV | 300 MW | 3.7 yrs | 75.8 |
| BOYLES | Substation-Adjacent | AL | Jefferson County | 230 kV | 300 MW | 3.7 yrs | 74.0 |
| Greenfield (UNKNOWN109244 - TAP155138) | Greenfield | AL | Jefferson County | 500 kV | 1,000 MW | 3.7 yrs | 72.2 |
| EAST CULLMAN | Substation-Adjacent | AL | Cullman County | 500 kV | 1,000 MW | 3.7 yrs | 72.1 |
| UNKNOWN110218 | Substation-Adjacent | AL | Jefferson County | 115 kV | 100 MW | 3.7 yrs | 70.9 |
| TAP142656 | Substation-Adjacent | AL | Jefferson County | 115 kV | 100 MW | 3.7 yrs | 70.7 |
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 LEWIS SMITH DAM substation, Alabama. 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.