Microsoft Project Osmium
West Des Moines, Polk County, IA
Construction is under way on Microsoft Project Osmium in West Des Moines, IA. Microsoft's largest US data center deployment to date, spanning 200 acres in northern Warren (160 acres) and Madison (40 acres) counties near West Des Moines. Investment estimated at $1.5-2 billion for ~1.7M sq ft across four phases; construction was scheduled to begin spring 2024, funded infrastructure (incl. a Raccoon River bridge) at no cost to taxpayers.
Project status
- Announced
- Permitting
- Under construction
- Operational
Recorded changes
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Community sentiment
Should this project be built?
What’s next
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Latest news
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Stories about it, and about Polk County, IA, land here.
Records and documentation
Iowa state legislation
- QTS Cedar Rapids I Data Center Campus – Development Agreement (with Amended Agreement, Assignment of Obligations, and Recording Memoranda)City-developer development agreement (with amendments and assignment) governing TIF, infrastructure and obligations for the QTS Cedar Rapids I data center campus.Download
- HB897 - Sales/use tax exemption for data centers (clean energy)Delays effective date of retail sales/use tax exemption for data centers and adds clean energy requirements.Download
- SB4016 - Comprehensive hyperscale data center environmental/water/energy regulationEstablishes comprehensive environmental, water, and energy regulations for hyperscale data centers, including cumulative impact assessments and Water Impact Permits.Download
- Amendments to Chapter 107 of the Unified Development Code (Ordinance PA26-0001)Linn County, Iowa unified development code amendments regulating data centers, approved February 18, 2026.Download
- SSB3181 - A bill for an act making certain sales and use tax exemptions relating to nuclear electric generation facilities, web search portal businesses, and data center businesses contingent upon making contributions to institutions of higher education governed by the state board of regents.(See SF 2498.)Description comingDownload
- HF2447 - A bill for an act relating to water and energy use for data centers, including reporting and tariff requirements, and including effective date provisions.(See HF 2690.)Description comingDownload
- HF2690 - A bill for an act relating to water and energy use for data centers, including reporting and tariff requirements, and including effective date provisions.(Formerly HF 2447.)Description comingDownload
- HF2001 - A bill for an act relating to water efficiency of data centers, including requirements for water-efficient cooling technologies and encouragement for the use of nonpotable and recycled water sources, providing civil penalties, and including effective date and applicability provisions.Description comingDownload
- HF2198 - A bill for an act relating to the disclosure of tax incentives provided to web search portal businesses and data center businesses, and including effective date provisions.Description comingDownload
Site details
- Operator
- Microsoft
- County
- Polk County, IA
- Address
- West Des Moines, IA
- Stage
- Under construction
Capacity and size: not on file
Map
Photos
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Finns Are Seething After Google Illegally Toppled 250,000 Trees for a Data CenterMother Jones
Google offer to pay others to help data center powerArkansas Online
This bill would make data centers pay their own way for powerSalt Lake City Deseret News
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