KEYSTONE
SubstationWisconsin · WOLVERINE POWER SUPPLY COOP
KEYSTONE is an electric transmission substation in Wisconsin, operated by WOLVERINE POWER SUPPLY COOP. It is classified as high-voltage (345 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #21908 | 345 kV | WOLVERINE POWER SUPPLY COOP | IN SERVICE | 82.3 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of KEYSTONE, 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 |
|---|---|---|---|---|---|---|---|
| KEYSTONE | Substation-Adjacent | MI | Mason County | 345 kV | 600 MW | 1.4 yrs | 71.6 |
| LUDINGTON | Substation-Adjacent | MI | Mason County | 345 kV | 600 MW | 1.4 yrs | 70.2 |
| UNKNOWN128917 | Substation-Adjacent | MI | Mason County | 345 kV | 600 MW | 1.4 yrs | 69.3 |
| TES FILER CITY STATION | Substation-Adjacent | MI | Manistee County | 138 kV | 100 MW | 1.4 yrs | 68.9 |
| Greenfield (TALLMADGE - LUDINGTON) | Greenfield | MI | Oceana County | 345 kV | 600 MW | 1.4 yrs | 67.1 |
| UNKNOWN128881 | Substation-Adjacent | MI | Manistee County | 138 kV | 100 MW | 2.2 yrs | 66.6 |
| Greenfield (TALLMADGE - LUDINGTON) | Greenfield | MI | Oceana County | 345 kV | 600 MW | 1.4 yrs | 66.3 |
| Greenfield (TALLMADGE - LUDINGTON) | Greenfield | MI | Oceana County | 345 kV | 600 MW | 1.4 yrs | 66.2 |
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 KEYSTONE 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.