The deputy PM, who chairs the BOI, has ordered a rewrite of data-centre investment promotion rules and a temporary halt on BOI approving new data-centre projects. NESDC flags water and electricity use as the main constraint and wants a central database on site, size and utility use, stricter environmental review, and a route for Thai SMEs into the supply chain, since most investment is imported equipment and technology. For a Thai SME: the BOI tax-incentive pipeline for data centres is on hold, and construction, electrical, cooling and water-related suppliers should watch for new local-content and environmental requirements rather than expect a near-term surge in orders.