How Big Are Ohio's Big Data Center Projects?

Asking which Ohio data center is “biggest” sounds simple, but public capacity figures often measure different things. A number can describe operational capacity, critical IT load, a future power envelope, or the combined capacity of several campuses.

For example, SiliconReport's governed August 2026 snapshot reports 531 MW of operational capacity for Meta's Prometheus campus in New Albany and 407 MW of operational capacity for Google New Albany. Those figures use the same tracker and the same operational-capacity label, making them more comparable to one another than to many other published numbers.

Microsoft illustrates a different problem. Aterio tracks the company's three Licking County campuses at roughly 869 MW combined—264 MW at Heath, 317 MW at Hebron and 288 MW at New Albany. That is a three-campus development total, not the capacity of a single data center.

STACK Infrastructure uses still another metric for its NAL01 campus in New Albany: 60 MW of critical capacity across two buildings. Critical capacity generally refers to power available to the computing load and should not automatically be compared with a site's total electrical service or a broader campus power envelope.

The lesson is not that capacity data are useless. It is that rankings can become misleading when differently defined numbers are placed in the same column. Before comparing Ohio projects, ask four questions: Is the figure operational or planned? Does it measure IT load or total electrical capacity? Is it for one building, one campus or multiple campuses? And does the source define the metric clearly?