Dave Johnston Mine / Rolling Hills
BrownfieldGlenrock, Wyoming
Dave Johnston Mine / Rolling Hills is a former mine site in Glenrock, Wyoming. Retired generation sites are among the most attractive datacenter redevelopment targets: the existing interconnection was sized for roughly 119 MW of generation, so the grid hookup, transmission rights, and often cooling-water access are already in place — collapsing the speed-to-power timeline versus a greenfield build.
Former use & capacity
Grid hookup & remediation
Nearby datacenter candidate sites
Scored candidate sites near Dave Johnston Mine / Rolling Hills, ranked by DC Readiness.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| UNKNOWN204404 | Substation-Adjacent | WY | Natrona County | 115 kV | 100 MW | 1.7 yrs | 69.3 |
| LATIGO | Substation-Adjacent | WY | Converse County | 230 kV | 300 MW | 1.7 yrs | 67.9 |
| UNKNOWN201486 | Substation-Adjacent | WY | Converse County | 230 kV | 300 MW | 1.7 yrs | 67.9 |
| CASPER WIND FARM | Substation-Adjacent | WY | Natrona County | 115 kV | 100 MW | 1.7 yrs | 67.7 |
| WINDSTAR | Substation-Adjacent | WY | Converse County | 230 kV | 300 MW | 1.7 yrs | 67.7 |
| Greenfield (UNKNOWN202379 - TAP208906) | Greenfield | WY | Natrona County | 230 kV | 300 MW | 1.7 yrs | 67.5 |
| TAP208906 | Substation-Adjacent | WY | Converse County | 230 kV | 300 MW | 1.7 yrs | 67.1 |
| YELLOWCAKE | Substation-Adjacent | WY | Converse County | 230 kV | 300 MW | 1.7 yrs | 67.1 |
Nearby internet exchanges
- Mountain West Technologies - CasperCasper, WY · 3 networks
- ACT CasperCasper, WY · 2 networks
- ACT DouglasDouglas, WY · 2 networks
See all datacenter sites in Wyoming →
Dataset updated . Screening estimates derived from public data sources.
Brownfield attributes are derived from EIA retired-generator and EPA public data. Existing capacity reflects the retired plant's historical nameplate, not deliverable interconnection for a new load. Confirm reusable interconnection rights, remediation status, and site availability with the utility, ISO, and current owner.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for Dave Johnston Mine / Rolling Hills, Glenrock, Wyoming. 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.