RISER139530
SubstationWisconsin · NORTHERN STATES POWER CO - WISCONSIN
At a glance
RISER139530 is an electric transmission substation in Wisconsin, on NORTHERN STATES POWER CO - WISCONSIN's transmission network. It is classified as sub-transmission (115 kv) and connects 2 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #113228 | 115 kV | NORTHERN STATES POWER CO - WISCONSIN | — | 1.9 mi |
| #141567 | 115 kV | NORTHERN STATES POWER CO - WISCONSIN | IN SERVICE | 0.6 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of RISER139530, 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 |
|---|---|---|---|---|---|---|---|
| EC Near Rhinelander Mill | Greenfield | WI | Oneida | — | — | 4.3 yrs | 58.0 |
| RHINELANDER PAPER | Substation-Adjacent | WI | Oneida County | 115 kV | 100 MW | 4.3 yrs | 56.7 |
| EC Near Eagle River | Greenfield | WI | Vilas | — | — | 4.3 yrs | 56.7 |
| HIGHWAY EIGHT | Substation-Adjacent | WI | Oneida County | 115 kV | 100 MW | 4.3 yrs | 56.5 |
| HODAG | Substation-Adjacent | WI | Oneida County | 115 kV | 100 MW | 4.3 yrs | 56.3 |
| EC Near Rhinelander Mill | Greenfield | WI | Oneida | — | — | 4.3 yrs | 55.9 |
| ST GERMAIN | Substation-Adjacent | WI | Vilas County | 115 kV | 100 MW | 4.3 yrs | 55.9 |
| THREE LAKES | Substation-Adjacent | WI | Oneida County | 115 kV | 100 MW | 4.3 yrs | 55.8 |
Who owns the transmission lines at RISER139530?
The 2 connected lines listed above are owned by NORTHERN STATES POWER CO - WISCONSIN. Line voltages range from 115 kV to 115 kV. Their combined recorded length is about 2.5 miles.
How do candidate sites near RISER139530 score?
The 8 highest-scoring candidate sites within about 25 miles range from 56 to 58 on the 0–100 DC Readiness scale. They fall in Oneida, Oneida County, Vilas, Vilas 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
What voltage is RISER139530 substation?
RISER139530 has a maximum voltage of 115 kV. That places it in the 115–229 kV band. The median named US substation in this dataset is 115 kV, so RISER139530 is at the national midpoint.
How many transmission lines connect to RISER139530 substation?
2 transmission lines terminate at or pass through RISER139530 in the HIFLD line data. The connected lines listed here run at 115 kV. Together the listed lines cover about 2.5 miles.
Who owns RISER139530 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at RISER139530 belong to NORTHERN STATES POWER CO - WISCONSIN. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is RISER139530 substation located?
RISER139530 is in Wisconsin at 45.9187, -89.2598. The datacenter candidate sites closest to it are in Oneida, Oneida County, Vilas.
Are there datacenter candidate sites near RISER139530 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of RISER139530. The highest-scoring is EC Near Rhinelander Mill at 58/100. 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, “RISER139530 substation, Wisconsin”, https://gridcensus.com/substations/wisconsin/riser139530-35b17e85 (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 RISER139530 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.