Thailand is moving to tighten rules for data centres, including higher electricity tariffs, upfront grid-access guarantees and tougher investment screening, as an artificial intelligence (AI)-driven construction boom raises concerns over pressure on the country’s power system and water resources.
But the government is pairing those restrictions with measures to give data centres and other industries greater access to renewable electricity, in an attempt to remain competitive for foreign investment while preventing the costs of servicing power-hungry facilities from being passed on to households.
Thailand’s Energy Regulatory Commission is reportedly preparing a screening framework expected to take effect around the fourth quarter, with proposed requirements covering electricity consumption, grid stability, water management and the economic contribution of new projects.
The National Energy Policy Council in July approved a separate electricity tariff for data centres intended to reflect the actual cost of supplying them, including imported liquefied natural gas and investments required to strengthen the electricity network. The Energy Ministry said the principle was to ensure large electricity users pay their own costs rather than shifting them onto other consumers.
Data centres are expected to pay around THB5 to 6 (US$0.15 to 0.18) per kilowatt(kWh)-hour under the new structure, compared with a planned rate of THB3 (US$.091) per kWh for the first 200 kWh a househld uses in each montlhy billing period.
The regulatory push comes amid a surge in digital infrastructure investment. Thailand’s Board of Investment said investment applications exceeded THB1.01 trillion (US$31.8 billion) in the first quarter of 2026, about 2.4 times the amount recorded a year earlier. Digital sector applications accounted for THB873.7 billion (US$26.35 billion) across 48 projects, mostly data centres and cloud services.
Global technology companies including Google, Amazon Web Services and Microsoft have announced major investments in Thailand, while TikTok owner ByteDance and other international operators have also been behind large digital sector applications. The government sees the industry as an important pillar of its effort to build a regional hub for cloud computing and artificial intelligence.
That growth, however, is creating a new challenge for Thailand’s electricity system.
Energy Minister Akanat Promphan said in July that future electricity demand associated with data centres and AI could reach as much as 30,000 megawatts (MW), underscoring the scale of capacity authorities may eventually have to accommodate.
The problem is not unique to Thailand. The International Energy Agency expects global data centre electricity consumption to roughly double to about 945 terawatt-hours by 2030, with demand growing about 15 per cent annually between 2024 and 2030. In Southeast Asia, data centre electricity demand is also expected to more than double by the end of the decade.
Clean power in exchange
Alongside tighter controls, Thailand is widening a mechanism that could make it easier for large electricity users to secure renewable power.
The NEPC agreed in July to expand Direct Power Purchase Agreements, or Direct PPAs, beyond data centres, allowing other industries requiring clean electricity to purchase renewable power directly from generators using Thailand’s state-owned grids under a Third Party Access framework.
Unlike Thailand’s traditional electricity model, in which electricity is largely bought and supplied through state utilities, Direct PPAs allow a corporate buyer and renewable generator to contract directly, while paying to use the existing transmission network.
Thailand had previously been developing a 2,000-MW Direct PPA pilot, initially focused on data centres and semiconductor businesses. The BOI said earlier plans allocated the first 2,000 MW to those industries, with additional capacity to be considered according to demand.
The July decision broadens the concept to industries beyond the initial beneficiaries, with the Energy Ministry saying the reform would help companies respond to international trade requirements that increasingly favour clean energy and gradually open Thailand’s electricity market to greater competition.
Important details remain under development. The BOI said in May that participation criteria and charges for using the electricity grid under Direct PPA arrangements were still to be announced. Thailand has also introduced Utility Green Tariff 2, which gives corporate consumers another route to source-specific renewable electricity.
The changes could address a longstanding concern among companies looking to decarbonise their Thai operations. A World Bank assessment of Thailand’s climate and development pathway said introducing PPAs that provide direct access to renewable energy would be an important step towards facilitating greater private-sector use of clean electricity.
Paying for the grid
Access to clean electricity, however, will come alongside tighter obligations on data centre developers.
Large operators will be required to provide deposits or bonds before securing transmission capacity, designed to deter “phantom loads” in which developers reserve far more electricity than projects eventually consume.
Local media have reported a proposed guarantee of THB4.5 million (US$135,771) per MW, while developers may have to demonstrate commercial operations within five to seven years or risk losing allocated capacity.
Authorities are also considering requiring heavy load facilities to install local energy storage systems to help manage fluctuations in voltage and frequency. Operators could face additional charges if sharp demand increases force state utilities to deploy emergency generation.
Those concerns are particularly acute because data centres operate continuously and some hyperscale projects can demand hundreds of MWs.
Thailand generally dispatches cheaper sources of electricity first, including hydropower, imported electricity from Laos, and coal. Large increases in demand can require additional gas-fired generation, including relatively expensive imported LNG, increasing the marginal cost of supplying the grid.
The new Type 9 tariff is intended to make data centre operators bear more of those incremental costs themselves rather than allowing them to filter through to household electricity bills.
Water is becoming part of the screening process as well. Large data-centre operators will have to submit water-management plans, reflecting concerns that cooling systems could compete with households, agriculture and other industries for limited water resources.
The government also plans to assess projects partly according to the economic value they generate. Hyperscale facilities involving substantial capital investment, employment and tax revenue are expected to receive greater priority than activities such as cryptocurrency mining or facilities used largely for passive storage.
