phase 4
OH-DC-0020
AWS Marysville Innovation Park Campus
Campus: Project Cosmos
Owner
Amazon Web Services (Oakhills Properties LLC)
Operator
Amazon Web Services
Primary use
hyperscale
Power
115 MW
(est)
estimated IT load (two buildings)
Size
500,000 sq ft
Land area
55.00 acres
In service
December 2027
(expected)
Location
Marysville, Union
Timeline
- CRA approved 2025-03-10 (unknown)
- dev agreement + easements 2025-07-28 (unknown)
- overpass construction 2026-2027 (unknown)
- building construction 2025-08 (unknown)
- completion 2027 (unknown)
Sources
Industry reporting
Other
- https://baxtel.com/data-center/amazon-project-cosmos
- https://www.jobsohio.com/newsroom/ohio-success/10-billion-and-counting-amazon-web-services-cements-ohios-role-as-tech-hub
Local government
Data confidence
Location
High
Owner Operator
High
Phase
High
Mw
Low
Sqft
Medium
In Service
Medium
Buildings
High
Land Area
High
Primary Use
High
What we are still verifying
No primary MW filing. No OPSB BTM. No Ohio EPA generator permit yet. Oakhills Properties LLC = Amazon purchasing entity.
Spot an error? Email a correction with the record ID OH-DC-0020.