TL;DR. Ohio halted new tax exemptions for datacenters after the policy cost the state over .5 billion in 2025, significantly exceeding forecasts. - Governor Mike DeWine ordered the pause, seeking a review of the industry's economic impact and costs. - The sales tax exemption covers construction materials and critical datacenter infrastructure like servers and cooling systems. - Ohio now joins Virginia, Texas, and Georgia in losing over billion annually on datacenter subsidies.