Microsoft Cheyenne Data Center Annexation
Cheyenne City Council approved Microsoft's 3,460 acre annexation for data center development after hours of public debate, with a subsequent referendum petition filed to reverse the vote. It is reported; the record holds no sourced date for when it reached that stage.
How much power it needs, how much water it would use and who would use it have not been disclosed.
How to read this page. Every fact links to the source it rests on; a number in brackets is its place in the source list. A figure no source gives reads Not disclosed, and nothing is estimated. Where sources give different figures, each is shown with who gave it, and another source's figure never stands in for the record's own. Entries are added and never overwritten; corrections are listed under What happened.
What is known
Each figure as its source gave it. The number in brackets is its place in the source list.
- Land
- Not disclosed
- Power it would draw
- Not disclosed
- Water
- Not disclosed
- Who leads it
- Microsoft
- as stated by the source
- Who would use it
- Not disclosed
- Jobs once it runs
- Not disclosed
- Tax each year
- Not disclosed
Every field, with who said it and when (Researcher view)
Impact figures
| Field | Value | Who says so | Source | Last verified |
|---|---|---|---|---|
| How much power it needs | Not disclosed | |||
| How much water it would use | Not disclosed | |||
| How loud it would be | Not disclosed | |||
| Jobs once it runs | Not disclosed | |||
| Tax it would pay each year | Not disclosed |
The record's fields
| Field | Value | Who says so | Source | Last verified |
|---|---|---|---|---|
| Who is building it | Microsoft | as stated by the source | September 17, 2026 | |
| Who is constructing it | Not disclosed | |||
| How much land | Not disclosed | |||
| Where its power comes from | Not disclosed | |||
| Grid connection | Not disclosed | |||
| How it is cooled | Not disclosed |
The developer's figure is what the company said; what a permit allows is the ceiling a permit sets; measured means observed. Water is in gallons a day or a year, whichever the source stated; a tax claim given as a range shows both ends, each linked to the source that gave it.
Still not public, and where it would show up
The record adds each the day a source gives it. Why these documents.
- Water useA state water right filing or a water supply agreement.
- Who would use itA lease announcement or a tenant named in a filing.
- Power the campus would drawA utility or public service commission docket, an interconnection filing, or an air permit for an on site plant.
- Jobs and taxAn incentive agreement, a county's economic development filing or a fiscal note.
What was decided
Acts of Laramie County and Cheyenne about data centers, on the record with their source. A rule about the area is not a decision about this record.
| Date | Who | Decision | Source |
|---|---|---|---|
| Cheyenne | Cheyenne City Council moved Cox Ranch data center project toward final vote | wyomingnews.com | |
| Cheyenne | Cheyenne City Council took a second reading vote on annexation and rezoning of Cox Ranch on Monday, September 15, 2026 | wyomingnews.com | |
| Cheyenne | City Council voted 6-3 to advance ordinances | capcity.news | |
| Cheyenne | Cheyenne City Council addressed Cox Ranch annexation ordinances Sept. 14, 2026 | k2radio.com | |
| Cheyenne | Cheyenne City Council voted Sept. 14 to advance annexation ordinances for Cox Ranch | capcity.news | |
| Cheyenne | City Council committee approved three aspects of Cox Ranch annexation and rezoning on Tuesday | wyomingnews.com |
1 earlier decision on the county's rows
| Date | Who | Decision | Source |
|---|---|---|---|
| Cheyenne | Cheyenne City Council received update on potential annexation of more than 1,200 acre Cox Ranch property west of town for a data centre project. | wyomingnews.com |
What happened
No dated entry is on the record yet.
6 corrections to this record
Every correction, with its reason
-
· the kind of source of a history entry
The source was labeled with the Google News search that found it; it now carries its outlet's tier (the record's rules of 2026-09-23). The link did not change. The day's label corrections.
-
· the kind of source of a history entry
The source was labeled with the Google News search that found it; it now carries its outlet's tier (the record's rules of 2026-09-23). The link did not change. The day's label corrections.
-
· the kind of source of a history entry
The source was labeled with the Google News search that found it; it now carries its outlet's tier (the record's rules of 2026-09-23). The link did not change. The day's label corrections.
-
· the kind of source of a history entry
The source was labeled with the Google News search that found it; it now carries its outlet's tier (the record's rules of 2026-09-23). The link did not change. The day's label corrections.
-
· the kind of source of a history entry
The source was labeled with the Google News search that found it; it now carries its outlet's tier (the record's rules of 2026-09-23). The link did not change. The day's label corrections.
-
· the kind of source of a history entry
The source was labeled with the Google News search that found it; it now carries its outlet's tier (the record's rules of 2026-09-23). The link did not change. The day's label corrections.
Every correction on the record is on the corrections page.
The site
Where in Laramie County is not in the public record. The pin marks the county seat, not a building, and the outline is the county.
Tap a pin for the data center, the parcel for its record
- This record: Proposed, ringed
- data center
- Dashed edge: the exact site is not in the public record
- Smaller pins: 9 other published records in Wyoming
Details
- this record's location, ringed
- parcel outline, from the county parcel record
- city limits, U.S. Census Bureau, on a town level record
- county boundary
The other pins are the published projects in the same state, each in its stage color. The imagery beneath is the USGS national orthoimagery, public domain, shown so the land around the site can be read.
- Where
- Cheyenne, Laramie County, Wyoming
- How exactly it is located
- County level, the county seat
- The parcel
- No parcel outline in the public record
- Nearest homes
- Not computed for a record placed at a place center
- Nearest records
- Nearest records are not computed for a record placed at a county seat.
Questions about this project
4 questions answered from the record
Who is building Microsoft Cheyenne Data Center Annexation?
-
Microsoft is the developer. No construction contractor is named on the record yet.
How much power and water does Microsoft Cheyenne Data Center Annexation say it needs?
-
Power: not disclosed by any source on file. Water: not disclosed by any source on file.
Where does Microsoft Cheyenne Data Center Annexation stand today?
-
It is reported; the date it reached that stage is not sourced, only the day a page was read. No dated entry is on the record yet.
What has Cheyenne or Laramie County decided about it?
-
Cheyenne: Cheyenne City Council moved Cox Ranch data center project toward final vote (reported September 17, 2026, source); and Cheyenne: Cheyenne City Council took a second reading vote on annexation and rezoning of Cox Ranch on Monday, September 15, 2026 (reported September 17, 2026, source). 7 events are on the county's rows; a rule about the area is not a decision about this record.
Sources
Primary documents
- Microsoft: Microsoft datacenter communities, Microsoft, September 14, 2026
Reporting
- Microsoft applies for permit for final Bison Data Center building in Cheyenne - Your Wyoming Link, Your Wyoming Link, August 10, 2026, query feed
- Cheyenne City Council approves Microsoft's 3,460-acre annexation after hours of public debate - WyomingNews.com, WyomingNews.com, July 16, 2026, local outlet
- Cheyenne is 3,500 acres larger after approving controversial Microsoft annexation - Oil City News, Oil City News, July 14, 2026, local outlet
- Why Microsoft Can Skip State Review For 3,500 More Data Center Acres In Cheyenne - Cowboy State Daily, Cowboy State Daily, July 14, 2026, local outlet
- Referendum petition aims to reverse City Council's 3,460-acre data center annexation vote - WyomingNews.com, WyomingNews.com, July 21, 2026, local outlet
- Microsoft presents data center expansion plans to the public - WyomingNews.com, WyomingNews.com, June 1, 2026, local outlet
- Lummis family could cash in on Microsoft data center expansion through Cheyenne land sales - WyoFile, WyoFile, May 29, 2026, local outlet
8 sources on file.
Cite this record
Data Center Record, "Microsoft Cheyenne Data Center Annexation", https://datacenterrecord.org/projects/microsoft-cheyenne-data-center-annexation-wy, last verified September 17, 2026.
Cite this page
Data Center Record, "Microsoft Cheyenne Data Center Annexation", https://datacenterrecord.org/projects/microsoft-cheyenne-data-center-annexation-wy. Data: Data Center Record, datacenterrecord.org, CC BY 4.0.
The structured rows are CC BY 4.0. Link to this page; that is what turns a reuse into a citation. Prose stays under copyright.
For researchers
- Slug
- microsoft-cheyenne-data-center-annexation-wy
- Status value
- rumored
- Stage
- Proposed
- Tier
- skeleton
- Tags
- skeleton
- Place id
- us/wy/laramie-county/cheyenne
- Coordinates
- 41.14556, -104.80194
- Location precision
- county
- Location source
- County seat (Cheyenne), Wikidata, placed at county level
- Coordinate source
- wikidata county seat
- Location source number
- Not disclosed
- Location last verified
- September 16, 2026
- EPA registry id
- Not disclosed
- Use type values
- not_disclosed
- Tenancy value
- not_disclosed
- Cooling type value
- not_disclosed
- Capacity basis
- not_disclosed
- Water basis
- not_disclosed, gallons_per_day
- Acreage basis
- Not disclosed
- Interconnection value
- not_disclosed
- Capacity, if disclosed
- Not disclosed
- Rating of the county's rows
- Not disclosed
- Published
- 2026-09-05
- Last verified
- 2026-09-17