# Microsoft Cheyenne Data Center CYS17-CYS22

SPP data center · https://askthegrid.com/assets/facilities/microsoft-cheyenne-data-center-cys17-cys22--grid-load-01f7c772205b1991

The Microsoft Cheyenne Data Center CYS17-CYS22 is the Bison campus southeast of Cheyenne, Wyoming, in Laramie County, on 249 acres bought from the Lummis family in 2021. Microsoft began planning the campus in 2017. As of August 2026 the city reported a building permit application for the fifth and last building, and one toured building is 250,000 square feet. Cheyenne Light, Fuel and Power Company, doing business as Black Hills Energy, filed for new 115 kV substations to extend service to the campus. Microsoft has not published a campus demand figure.

## Identity and location

- Operating status: under_construction
- Asset scope: campus
- Location: 5707 Loving Trail, Cheyenne, Laramie County, WY
- Operator: Microsoft (exact asset)
- Developer: Microsoft (exact asset)

## Power and grid context

- ISO/RTO: SPP
- Electric utility: Cheyenne Light, Fuel and Power Company
- Substation: New 115 kV Sweetgrass Substation and new 115 kV and 24.9 kV Bison Substation

## Sources

- [The Mayor’s Minute from Mayor Patrick Collins – Aug. 7, 2026 – City of Cheyenne](https://www.cheyennecity.org/News-articles/The-Mayor%E2%80%99s-Minute-from-Mayor-Patrick-Collins-%E2%80%93-Aug.-7-2026)
- [https://data.epa.gov/efservice/frs_facility_site/registry_id/110071540590/JSON](https://data.epa.gov/efservice/frs_facility_site/registry_id/110071540590/JSON)
- [The Mayor’s Minute from Mayor Patrick Collins](https://kfbcradio.com/the-mayors-minute-from-mayor-patrick-collins-66/)
- [https://data.epa.gov/efservice/frs_facility_site/registry_id/110071887862/JSON](https://data.epa.gov/efservice/frs_facility_site/registry_id/110071887862/JSON)
- [PUDC-23-25: CYS Bison - Site Plan - PublicInput](https://connect.cheyennecity.org/b72308)
- [https://cheyenne.granicus.com/MetaViewer.php?event_id=1232&meta_id=132705&view_id=5](https://cheyenne.granicus.com/MetaViewer.php?event_id=1232&meta_id=132705&view_id=5)
- [https://wyomingdigitalcollections.ptfs.com/aw-server/rest/product/purl/WSL/s/7855fcd8-a1a1-48a9-afcc-da1c22921902](https://wyomingdigitalcollections.ptfs.com/aw-server/rest/product/purl/WSL/s/7855fcd8-a1a1-48a9-afcc-da1c22921902)
- [Microsoft Cheyenne Data Center CYS17 - CYS22 (F030348/A0015011)](https://wyomingdeq.commentinput.com/?id=K96TGfbZN)
- [https://services.arcgis.com/xOi1kZaI0eWDREZv/ArcGIS/rest/services/Address_Points_from_National_Address_Database_view/FeatureServer/0/query?f=json&where=Add_Number%3D5707&geometry=-104.81254%2C41.032109999999996%2C-104.75254%2C41.09211&geometryType=esriGeometryEnvelope&inSR=4326&spatialRel=esriSpatialRelIntersects&outSR=4326&outFields=%2A&returnGeometry=true&resultRecordCount=2000](https://services.arcgis.com/xOi1kZaI0eWDREZv/ArcGIS/rest/services/Address_Points_from_National_Address_Database_view/FeatureServer/0/query?f=json&where=Add_Number%3D5707&geometry=-104.81254%2C41.032109999999996%2C-104.75254%2C41.09211&geometryType=esriGeometryEnvelope&inSR=4326&spatialRel=esriSpatialRelIntersects&outSR=4326&outFields=%2A&returnGeometry=true&resultRecordCount=2000)
- [Lummis family could cash in on Microsoft data center expansion through Cheyenne land sales - WyoFile](https://wyofile.com/lummis-family-could-cash-in-on-microsoft-data-center-expansion-through-cheyenne-land-sales/)
- [Cheyenne Light Seeks Regulatory Approval In Wyoming For Estimated $42.3m Transmission Project | TD World](https://www.tdworld.com/substations/article/21159918/cheyenne-light-seeks-regulatory-approval-in-wyoming-for-estimated-423m-transmission-project)
- [Microsoft expands cloud services with two new datacenters in Wyoming | Microsoft Azure Blog](https://azure.microsoft.com/en-us/blog/microsoft-expands-cloud-services-with-two-new-datacenters-in-wyoming/)

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Canonical page: https://askthegrid.com/assets/facilities/microsoft-cheyenne-data-center-cys17-cys22--grid-load-01f7c772205b1991
Profile generated: 2026-11-02T21:32:38.239640Z
Source: Ask the Grid — https://askthegrid.com/