GRANVILLE
SubstationWisconsin · AMERICAN TRANSMISSION CO
GRANVILLE is an electric transmission substation in Wisconsin, operated by AMERICAN TRANSMISSION CO. It is classified as high-voltage (345 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #3446 | 345 kV | AMERICAN TRANSMISSION CO | IN SERVICE | 16.2 mi |
| #48431 | 345 kV | AMERICAN TRANSMISSION CO | IN SERVICE | 19.7 mi |
| #33049 | 345 kV | AMERICAN TRANSMISSION CO | IN SERVICE | 19.5 mi |
| #37072 | 138 kV | AMERICAN TRANSMISSION CO | IN SERVICE | 2.8 mi |
| #39469 | 138 kV | AMERICAN TRANSMISSION CO | IN SERVICE | 5.1 mi |
| #47403 | 138 kV | AMERICAN TRANSMISSION CO | IN SERVICE | 2.8 mi |
| #3424 | 138 kV | AMERICAN TRANSMISSION CO | IN SERVICE | 6.0 mi |
| #50638 | 138 kV | AMERICAN TRANSMISSION CO | IN SERVICE | 0.2 mi |
| #7938 | 138 kV | AMERICAN TRANSMISSION CO | IN SERVICE | 0.2 mi |
| #27109 | 138 kV | AMERICAN TRANSMISSION CO | IN SERVICE | 4.3 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of GRANVILLE, 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 |
|---|---|---|---|---|---|---|---|
| OAK CREEK STATION | Substation-Adjacent | WI | Milwaukee County | 345 kV | 600 MW | 1.4 yrs | 75.0 |
| ZION | Substation-Adjacent | WI | Milwaukee County | 345 kV | 600 MW | 1.4 yrs | 74.4 |
| BLUEMOUND | Substation-Adjacent | WI | Milwaukee County | 230 kV | 300 MW | 1.4 yrs | 73.6 |
| TAP138061 | Substation-Adjacent | WI | Ozaukee County | 345 kV | 600 MW | 1.4 yrs | 72.6 |
| O CONNOR | Substation-Adjacent | WI | Milwaukee County | 138 kV | 100 MW | 1.4 yrs | 72.1 |
| 96TH ST | Substation-Adjacent | WI | Milwaukee County | 138 kV | 100 MW | 1.4 yrs | 71.1 |
| BUTLER | Substation-Adjacent | WI | Waukesha County | 138 kV | 100 MW | 1.4 yrs | 71.0 |
| NORWICH | Substation-Adjacent | WI | Milwaukee County | 138 kV | 100 MW | 1.4 yrs | 70.9 |
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 GRANVILLE substation, Wisconsin. 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.