OSAGE
SubstationWyoming · BLACK HILLS POWER, INC.
At a glance
OSAGE is an electric transmission substation in Wyoming, on BLACK HILLS POWER, INC.'s transmission network. It is classified as sub-transmission (115 kv) and connects 9 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 |
|---|---|---|---|---|
| #204601 | 115 kV | POWDER RIVER ENERGY CORPORATION | — | 12.7 mi |
| #202702 | 115 kV | POWDER RIVER ENERGY CORPORATION | — | 13.6 mi |
| #204599 | 115 kV | BLACK HILLS POWER, INC. | — | 1.3 mi |
| #207023 | 69 kV | BLACK HILLS POWER, INC. | — | 0.1 mi |
| #211521 | 69 kV | POWDER RIVER ENERGY CORPORATION | — | 1.6 mi |
| #202541 | 69 kV | POWDER RIVER ENERGY CORPORATION | — | 15.7 mi |
| #212272 | 69 kV | NORTHERN WASCO COUNTY PUD | IN SERVICE | 0.6 mi |
| #206562 | 69 kV | BLACK HILLS POWER, INC. | — | 0.1 mi |
| #207022 | 69 kV | BLACK HILLS POWER, INC. | — | 0.1 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of OSAGE, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN201481 | Substation-Adjacent | WY | Weston County | 230 kV | 300 MW | 4.3 yrs | 60.8 |
| TAP205630 | Substation-Adjacent | WY | Weston County | 230 kV | 300 MW | 4.3 yrs | 60.8 |
| TAP203672 | Substation-Adjacent | WY | Weston County | 230 kV | 300 MW | 4.3 yrs | 60.8 |
| EC Near Osage (WY) | Greenfield | WY | Weston | — | — | 4.3 yrs | 60.5 |
| EC Near Osage (WY) | Greenfield | WY | Weston | — | — | 4.3 yrs | 60.3 |
| EC Near Osage (WY) | Greenfield | WY | Weston | — | — | 4.3 yrs | 60.1 |
| EC Near Osage (WY) | Greenfield | WY | Weston | — | — | 4.3 yrs | 59.9 |
| EC Near Osage (WY) | Greenfield | WY | Weston | — | — | 4.3 yrs | 59.8 |
How does OSAGE compare with other substations in Wyoming?
Wyoming has 849 substation records in HIFLD, of which 73 carry a station name; the rest are unnamed tap points, risers and line ends. 9 named substations in the state are in OSAGE's 115–229 kV band (12% of named stations). 49 sit in a higher band. 2 named substations in Wyoming operate at 345 kV or above. The highest voltage recorded in the state is 345 kV, and the state median is 230 kV.
Who owns the transmission lines at OSAGE?
The 9 connected lines listed above are owned by POWDER RIVER ENERGY CORPORATION, BLACK HILLS POWER, INC., NORTHERN WASCO COUNTY PUD. Line voltages range from 69 kV to 115 kV. Their combined recorded length is about 45.7 miles.
How do candidate sites near OSAGE score?
The 8 highest-scoring candidate sites within about 25 miles range from 60 to 61 on the 0–100 DC Readiness scale. They fall in Weston County, Weston. The Wyoming average across 1,639 scored sites is 52.2. 441 of those Wyoming sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
What voltage is OSAGE substation?
OSAGE has a maximum voltage of 115 kV and a minimum of 69 kV. That places it in the 115–229 kV band. The median named US substation in this dataset is 115 kV, so OSAGE is at the national midpoint.
How many transmission lines connect to OSAGE substation?
9 transmission lines terminate at or pass through OSAGE in the HIFLD line data. The connected lines listed here run at 115 kV, 69 kV. Together the listed lines cover about 45.7 miles.
Who owns OSAGE substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at OSAGE belong to BLACK HILLS POWER, INC., and others to POWDER RIVER ENERGY CORPORATION, NORTHERN WASCO COUNTY PUD. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is OSAGE substation located?
OSAGE is in Wyoming at 43.9705, -104.4111. The datacenter candidate sites closest to it are in Weston County, Weston.
Are there datacenter candidate sites near OSAGE substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of OSAGE. The highest-scoring is UNKNOWN201481 at 61/100. Across Wyoming, the average DC Readiness score is 52.2.
Other 115 kV substations in Wyoming
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, “OSAGE substation, Wyoming”, https://gridcensus.com/substations/wyoming/osage-7d601e4e (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 OSAGE substation, Wyoming 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.