What Is the AWS Marysville Data Center (Project Cosmos)?
Where the next wave of AWS physical infrastructure is slated to land in Union County.
Project Cosmos is the planned Amazon Web Services data center campus at 14684 Industrial Parkway in the Marysville Innovation Park.
It sits in Marysville, Ohio, about 30 miles northwest of Columbus, within AWS us-east-2.
Definition
Records describe a planned campus operated by Amazon Web Services of Seattle.
It reached permitted status on March 10, 2025.
Utilities nationally are racing to fund grid upgrades as AI workloads drive sharply higher power demand.
Priorities
The site spans over 55 acres along Route 33 near Contract Building Components and Nissin Transport. Plans call for two data centers totaling 500,000 square feet.
Planning typically centers on controlled access, security features, and redundant network connectivity that can withstand regional demand shocks.
A reinvestment area agreement grants a 30 year, 100 percent property tax exemption tied to a $1 billion commitment.
When Will Project Cosmos Open, and How Big Will It Be?
Permits are in place for AWS Project Cosmos at 14684 Industrial Parkway.
The project is tied to a proposed 30-year exemption under a community reinvestment area agreement being discussed with Marysville City Council.
Attention now shifts to delivery risk, opening dates, and the overall scale of the planned Marysville Innovation Park campus. Large projects often rely on a construction loan with disbursements tied to milestones, which can influence the build timeline.
Opening Schedule
Approval moved to Permitted status on March 10, 2025.
Construction is slated to start in August 2025.
Construction milestones target completion in 2027.
The first building is expected to be operational by 2027.
Campus Scale
The campus covers more than 55 acres on the eastern side of Innovation Park along Route 33.
It sits near Contract Building Components and Nissin Transport.
Planned Buildings
- Two data center buildings are planned.
- Each facility is about 250,000 square feet.
Total floor area is roughly 500,000 square feet.
Documents link the facilities to the us-east-2 AWS region.
This implies a phased local delivery.
Jobs, Wages, and Tax Revenue From the Marysville Build
Several financial stakes now define the Marysville data center build. They include limited direct hiring, high wage averages, and unusually large PILOT flows.
Jobs and Wages
Amazon estimates 25 full-time data center operations and management jobs by Dec. 31, 2028.
The company projects $2.25 million in annual payroll, or about $90,000 per job.
Construction crews and other contractors tied to the two-building plan support local hiring.
In other fast-growing markets, data centers’ electricity demand is projected to nearly triple by 2040, intensifying competition for power infrastructure.
Workforce training through Think Big Spaces targets longer-term staffing.
Taxes and PILOT
The project trades a 30-year, 100% property tax abatement for PILOT payments.
Those payments are expected to exceed $15 million per year for 15 years to schools and the city.
Absent abatements, officials estimate $75 million in total property taxes.
That includes $55 million for schools in Marysville.
Can Marysville’s Power Grid Support AWS’s Data Center Demand?
Transformers and transmission lines now sit at the center of Marysville’s AWS data center outlook.
Across the industry, Prologis is targeting 10 gigawatts of data center power capacity over the next decade, underscoring how quickly AI-driven load is rising.
Snohomish PUD serves the county, but BPA controls most high-voltage routes.
Local upgrades
Central Marysville Substation is adding a 115/12kV 28 MVA transformer and four 12kV feeders.
New 115 kV segments near the Jennings Park and Stimson corridors target 2026 to 2027 delivery.
Regional rebuilds in Edmonds and Everett add support.
However, completion windows extend to 2028 for reliability.
- Jennings Park line portion complete; reconductor 2026.
- Stimson to Stanwood and Sky Valley phase two, 2026.
- Stimson to Sills Corner, 2027.
Regional limits
Ninth Power Plan work shows all-month capacity challenges and seasonal energy stress.
Transmission constraints plus slow statewide buildouts raise Capacity Shortfall risk if BPA projects slip.
Water Use, Zoning Setbacks, and Tax Abatements in Marysville
Water supply limits, setback rules, and tax terms are emerging as the most immediate constraints on Marysville’s AWS data center proposal.
Water Constraints
Marysville set water caps at 50,000 gallons per day, roughly the equivalent of 250 to 300 homes.
That is under 1 percent of the 5 million gallons used on peak summer days.
AWS plans non-contact cooling that reuses water.
It also proposes on-site storage that would be filled during off-peak hours.
Zoning and Tax Terms
The site must rely on City water only, with no on-site wells.
Tree cutting is also limited in woodland and wetland areas, with replacement commitments required.
Officials are weighing abatements against long-term capacity.
They are pushing for abatement transparency and utility agreements that protect infrastructure.
No abatements are finalized.
City monitoring focuses on resident supply and treatment headroom.
As seen in other fast-growing data center markets, local rules can also include requirements like noise baseline studies to address community impacts alongside water and power planning.
Assessment
Project Cosmos now approaches a reported $1 billion, intensifying Marysville’s growth and infrastructure strain quickly.
The build promises construction activity, permanent technical jobs, and new tax flows for local budgets.
Power availability remains the central constraint, with grid upgrades and utility commitments under scrutiny today.
Water use, setbacks, and abatements continue shaping approvals, timelines, and risk perceptions among nearby residents.
As planning advances, the project’s feasibility will hinge on energy, permitting, and cost discipline ahead.
