Microsoft West Des Moines Data Center Campuses (Alluvion, Osmium, Ginger, Ruthenium, and Maple)
West Des Moines, Polk County, IADeveloper: MicrosoftCensus GEOID 19153
- Stage
- Running
- Undisclosed in public filings
- Land, Water
Microsoft operates and is expanding five hyperscale data center campuses (Project Alluvion, Project Osmium, Project Ginger, Project Ruthenium, and Project Maple) across 16 buildings in West Des Moines, Polk and Dallas Counties, Iowa. It is running, since May 15, 2025.
How much water it would use and who would use it have not been disclosed.
Tap a pin for the data center, the parcel for its record
- This record: Running, ringed
- data center
- Smaller pins: 25 other published records in Iowa
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.
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.
- Buildings
- 16 buildings agency filing, verified October 27, 2026
- Power it would draw
- 500 MW the developer's figure About 5 percent of New York City's summer peak demand in 2024.
- Who leads it
- Microsoft as stated by the source
- Undisclosed in public filings
- Land, Water, Who would use it, Jobs once it runs, Tax each year
The math behind the comparison
- Microsoft West Des Moines Data Center Campuses (Alluvion, Osmium, Ginger, Ruthenium, and Maple), capacity: 500 MW.
- New York City (NYISO Zone J) summer peak demand, actual, 2024: 10,245 MW (2024).
- 500 ÷ 10,245 = 0.05 (MW over MW).
Sources:
- Microsoft (opens in a new tab)
- NYISO, 2025 Load and Capacity Data Report (Gold Book) (opens in a new tab), Table I-4a, Baseline Summer Non-Coincident Peak Demand, Historical and Forecast, page 26, Zone J, 2024 row (2024)
A comparison is arithmetic on two published rows and is never a new fact (how comparisons are made).
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 | 500 MW | the developer's figure | iowaeda.com (opens in a new tab) | October 27, 2026 |
| How much water it would use | ||||
| How loud it would be | ||||
| Jobs once it runs | ||||
| Tax it would pay each year |
The record's fields
| Field | Value | Who says so | Source | Last verified |
|---|---|---|---|---|
| Who is building it | Microsoft | as stated by the source | October 27, 2026 | |
| Who is constructing it | ||||
| How much land | ||||
| Buildings | 16 buildings | agency filing, verified October 27, 2026 | iowaeda.com (opens in a new tab) | October 27, 2026 |
| Where its power comes from | ||||
| Grid connection | ||||
| How it is cooled |
A blank value cell means not disclosed by any source on file; a blank basis cell means the source gave the figure without saying on what basis.
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 use A state water right filing or a water supply agreement.
- Who would use it A lease announcement or a tenant named in a filing.
- Jobs and tax An incentive agreement, a county's economic development filing or a fiscal note.
What was decided
Acts of Polk County and West Des Moines about data centers, on the record with their source. A rule about the area is not a decision about this record.
June 15, 2026 West Des Moines, IA Norwalk City Council sees push back on proposed data center
In West Des Moines, Polk County (IA), West Des Moines City Council and local residents debated municipal data center siting, utility infrastructure load, water consumption, and zoning rules during the June 15, 2026 session.
- West Des Moines City Council Officials and Speakers Elected Official auto captions, unchecked
"pollution, and power usage. One resident telling Local 5 he feels the city has been trying to hide the project from the public. One of my kids that lives in Norwalk sent me a text, hey, did you read this article in the newspaper in Indianola about the meeting next Thursday? And I'm like, what meeting? And so as I started to dig into it, I'm like, there was no information. The council's going to vote on a deal with the developers. Nobody"
- Resident public comment Resident Public Comment auto captions, unchecked
"employees. The city does clarify that tonight's vote does not approve or authorize any data center to be built. It simply begins talks between Norwalk and the land developer."
Using this data in a report? Support the record.
What happened
-
· Status: running (content date)
Microsoft owns over 600 acres in West Des Moines with five data center campuses operational since 2012 and a sixth approved by city council agreement, having invested an estimated 5 to 6 billion dollars in the area.
The site
The pin is the site's address.
- Where
- 8855 Grand Avenue and Veterans Parkway, West Des Moines, IA 50266, West Des Moines, Polk County, Iowa [source] (opens in a new tab)
- How exactly it is located
- Exact, at the address
- The parcel
- No parcel outline in the public record
- Nearest homes
- Not computed for a record placed at a place center
- Nearest records
- US Signal and OneNeck Des Moines Data Center (IA01 Waukee), 5.2 mi
- Aureon West Des Moines Data Center, 5.4 mi
- Microsoft Van Meter Data Center Campus, 6.0 mi
- IP Pathways Urbandale Data Center (DSM1), 6.0 mi
- Apple Waukee Data Center Campus, 7.3 mi
Keep going
Questions about this project
5 questions answered from the record
How big is Microsoft West Des Moines Data Center Campuses (Alluvion, Osmium, Ginger, Ruthenium, and Maple)?
-
The record has 2 measures of its size: 500 MW (the developer's figure, iowaeda.com (opens in a new tab)) and 16 buildings (agency filing, verified October 27, 2026, iowaeda.com (opens in a new tab)). Its acreage is not disclosed.
Who is building Microsoft West Des Moines Data Center Campuses (Alluvion, Osmium, Ginger, Ruthenium, and Maple)?
-
Microsoft is the developer. No construction contractor is named on the record yet.
How much power and water does Microsoft West Des Moines Data Center Campuses (Alluvion, Osmium, Ginger, Ruthenium, and Maple) say it needs?
-
Power: 500 MW (the developer's figure, iowaeda.com (opens in a new tab)). Water: not disclosed by any source on file.
Where does Microsoft West Des Moines Data Center Campuses (Alluvion, Osmium, Ginger, Ruthenium, and Maple) stand today?
-
It is running, since May 15, 2025. The newest entry, May 15, 2025: Microsoft owns over 600 acres in West Des Moines with five data center campuses operational since 2012 and a sixth approved by city council agreement, having invested an estimated 5 to 6 billion dollars in the area. [1]
What has West Des Moines or Polk County decided about it?
-
No decision by West Des Moines or Polk County about data centers is on the record. The Polk County page and the Iowa scorecard list every rated row the day a person publishes one.
Sources
Reporting
- Microsoft built 5 data center campuses in this Iowa city. Here’s what Wisconsin can expect. - WPR (opens in a new tab), WPR, May 15, 2025, query feed
1 source on file.
About this data
Last verified , first recorded . Every correction is logged on the corrections page. Report a correction · Send a tip about Microsoft West Des Moines Data Center Campuses (Alluvion, Osmium, Ginger, Ruthenium, and Maple)
Cite this page
Data Center Record, "Microsoft West Des Moines Data Center Campuses (Alluvion, Osmium, Ginger, Ruthenium, and Maple)", https://datacenterrecord.org/projects/microsoft-west-des-moines-data-centers-ia. Data: Data Center Record, datacenterrecord.org, CC BY-NC 4.0.
The structured rows are CC BY-NC 4.0. Link to this page; that is what turns a reuse into a citation. Commercial use needs a license. Prose stays under copyright.
For researchers
- Stage
- Running
- Tier
- built from one source
- Tags
- Built from one source
- Coordinates
- 41.5485, -93.8124
- How the location is known
- Location from the site's street address.
- Location source
- https://www.iowaeda.com/
- Coordinate source
- IEDA High Quality Jobs filings and West Des Moines GIS parcels
- How capacity was disclosed
- the developer's figure
- Capacity, if disclosed
- 500 MW, the developer's figure
- Published
- September 27, 2026
- Last verified
- October 27, 2026
- Undisclosed in public filings
- Location source number, Location last verified, EPA registry id, Uses, Tenancy, Cooling, How water was disclosed, How acreage was disclosed, Interconnection, Rating of the county's rows