Marysville, OH · Union County · 40.237°N 83.350°W
AWS Project Cosmos
Amazon Web Services
Key facts
- Location
- Marysville, OH, Union County
- Capacity
- —
- Powered by
- Grid (city water supply; non-contact cooling with on-site storage)
- Announced
- 2024-10
- Last updated
Civic impact
Economics
- Investment
- $1B
- Land
- 55 acres
- Jobs
- 50 permanent
Energy & water
- Energy source
- Grid
Non-contact cooling; on-site water storage used during off-peak hours; city water supply only (no on-site wells)
Public subsidies
- 30-year 100% property tax exemption (Community Reinvestment Area)Marysville, Union County, OH · 2025
Status history
- Proposed
AWS files rezoning application for Marysville Innovation Park at 14684 Industrial Parkway
AWS gets go-ahead for data center campus in Marysville, Ohio - Permitted
Marysville City Council approves Community Reinvestment Area agreement; 30-year 100% property tax exemption granted; permit issued March 10, 2025
AWS gets go-ahead for data center campus in Marysville, Ohio - Under construction
City of Marysville FAQ confirms site readiness activities began early 2026 with construction running through 2027; DCD had projected August 2025 construction start from permit approval which appears to have been delayed. Two buildings (~250,000 sq ft each); completion targeted 2027.
Data Center FAQs - City of Marysville, OH
Location
Sources & data provenance
Confirmed: data verified against official filings, permits, or direct operator announcements.
Last updated:
- Data Center DynamicsRetrieved:
- Grow Union County Ohio / AWSRetrieved:
- City of MarysvilleRetrieved:
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