Thailand is still defining how its largest data centres will be regulated

The 100MW figure has not become a final legal cut-off

On September 20, The Nation reported that officials were working toward a new framework covering data-centre size, electricity use and location. NESDC secretary-general Danucha Pichayanan said a 100MW-or-more threshold was being considered for the hyperscale category, while the final boundary still required policy-board consideration.

The figure describes a proposed classification point, not a nationwide rule that can already be applied to every existing or planned facility. The same policy work also covers power-use limits and where facilities treated as industrial operations may be located.

Earlier reporting pointed to mid-October as the target for completing the broader framework. The September 23 official update gives a more concrete near-term step: relevant subcommittees were instructed to finish minimum standards and operating guidelines by the end of September for the board to consider. As of September 27, a final effective date for the full package has not been confirmed in the official material reviewed for this story.

For practical context, see Thailand economy and finance. This development also connects with Thailand SEC proposes broader rules for major shareholders.

A separate 0.5MW reporting threshold has now moved forward

At its second meeting, the Data Center Business Policy Committee approved in principle a system that groups facilities by total facility load. The initial approach calls for data centres from 0.5MW upward to notify or register information with the Ministry of Digital Economy and Society so the government can build a consistent regulatory dataset.

This is a different threshold serving a different purpose. The 0.5MW figure relates to identifying and recording facilities within the regulatory system; the 100MW figure was discussed as a possible boundary for the largest hyperscale category. Treating them as competing versions of the same rule would be misleading.

The board also kept the focus on infrastructure, land use and buildings, and environmental standards. Those workstreams are more likely to determine what a particular site can support than a single headline number on its own.

Property decisions will depend on site-level rules

For a land buyer, nearby homeowner or business owner, the draft framework does not yet prove that a data centre of a given size is allowed or prohibited on a specific plot. The practical answer will depend on how the final rules interact with zoning, building permissions, electricity and water capacity, environmental conditions and any approvals already attached to the site.

Anyone assessing property near a planned large facility should therefore separate the national policy discussion from the documents governing that location today. The forthcoming framework may change how future projects are screened, but it does not by itself replace existing land-use or permitting records before the detailed standards are adopted.