HARTLAND
SubstationWisconsin
At a glance
HARTLAND is an electric transmission substation in Wisconsin. It is classified as unclassified and connects 0 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
No owner is recorded for the lines that connect here.
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of HARTLAND, 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 |
|---|---|---|---|---|---|---|---|
| GRANVILLE | Substation-Adjacent | WI | Milwaukee County | 345 kV | 600 MW | 4.3 yrs | 68.3 |
| ARCADIAN | Substation-Adjacent | WI | Waukesha County | 345 kV | 600 MW | 4.3 yrs | 66.6 |
| BLUEMOUND | Substation-Adjacent | WI | Milwaukee County | 230 kV | 300 MW | 4.3 yrs | 66.5 |
| CEDARSAUK | Substation-Adjacent | WI | Ozaukee County | 345 kV | 600 MW | 4.3 yrs | 66.5 |
| TAP138061 | Substation-Adjacent | WI | Washington County | 345 kV | 600 MW | 4.3 yrs | 66.4 |
| EC Near Omega Hills Gas Recovery | Greenfield | WI | Washington | — | — | 4.3 yrs | 64.2 |
| PARK HILL | Substation-Adjacent | WI | Milwaukee County | 138 kV | 100 MW | 4.3 yrs | 63.8 |
| EC Coal Milwaukee County | Greenfield | WI | Milwaukee County | — | — | 4.3 yrs | 63.7 |
How do candidate sites near HARTLAND score?
The 8 highest-scoring candidate sites within about 25 miles range from 64 to 68 on the 0–100 DC Readiness scale. They fall in Milwaukee County, Waukesha County, Ozaukee County, Washington County. The Wisconsin average across 3,340 scored sites is 55.4. 1,248 of those Wisconsin sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
How many transmission lines connect to HARTLAND substation?
0 transmission lines terminate at or pass through HARTLAND in the HIFLD line data.
Where is HARTLAND substation located?
HARTLAND is in Wisconsin at 43.1059, -88.3581. The datacenter candidate sites closest to it are in Milwaukee County, Waukesha County, Ozaukee County.
Are there datacenter candidate sites near HARTLAND substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of HARTLAND. The highest-scoring is GRANVILLE at 68/100. Across Wisconsin, the average DC Readiness score is 55.4.
More in Wisconsin
About this data
Source: HIFLD Electric Substations and Transmission Lines (U.S. Department of Homeland Security), as published June 29, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “HARTLAND substation, Wisconsin”, https://gridcensus.com/substations/wisconsin/hartland-a19352a8 (data as of June 29, 2026).
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
Every site and score for HARTLAND substation, Wisconsin is free to browse. Pro adds Watchtower on 25 sites, alerts when new candidate sites, datacenters or interconnection-queue requests appear in your markets, score and capacity history, and CSV export. Enterprise adds team seats, weekly data files for all 147,272 sites, the REST API and an MCP server for AI tools.