🎯 Main Takeaway
Southeast Asia is quickly becoming a hub for data centres.
As of 2026, the region hosts more than 2000 data centres across Indonesia, Malaysia, Singapore, Thailand, Vietnam, and the Philippines, according to Ember, a research organisation.
By 2030, investment is estimated at 30 billion USD, according to Turner & Townsend, a multinational professional services company.
This rapid expansion stems from the scramble for AI infrastructure across the region.
In addition, Southeast Asia's rapid digital adoption among its citizens means tech giants can quickly capitalise on this growing market.
However, building data centres in Southeast Asia is not simple. Many factors must be considered, including Southeast Asia’s tropical climate, data centres' energy demand, and the pressing issue of water supply.
📡 Why it’s on our radar
The rapid expansion of data centre construction is unlikely to stop in the coming years; therefore, it’s important to highlight the challenges it entails.
Beyond the challenges, it is important to highlight the environmental impact of data centres and how the region has responded to their rapid expansion.
⚠️ Why it’s Important
Firstly, according to the International Energy Agency (IEA), in 2024, the average data centre requires 5-10 megawatts (MW) to be operational.
However, large-scale or hyperscale data centres, which are increasingly common, demand 100 MW, which is equivalent to the electricity demand of 350.000 to 400.000 electric cars.
With Southeast Asia scrambling to solve its current energy crisis, this figure presents a massive challenge.
Secondly, the challenge of cooling. In tropical climates such as Southeast Asia, keeping high-density chips within their operating temperature range requires more energy and large volumes of water.
According to the IEA, global data centre water consumption is currently around 560 billion litres per year, and is estimated to rise to 1200 billion litres by 2030.
Lastly, the timing. While hyperscale data centres can be constructed within a year, energy transmission lines take far longer to plan, approve and construct. This creates a mismatch: demand can outpace supply.
According to Bain & Company a management consulting firm, grid infrastructure remains a binding constraint for region requiring 5 to 15 years to build.
These are only a few challenges data centre construction creates, which further spill over into environmental challenges.
🌱 How AI data centres impact the environment
Rising energy demand is the main environmental concern in Southeast Asia.
As figures from multiple sources suggest, data centres are among the most resource-intensive assets in the modern economy.
With the rapid expansion of data centres in Southeast Asia, electricity demand is expected to rise sharply, pushing another underlying issue in the region: its main energy source.
According to the IEA, fossil fuels continue to dominate the region's energy mix, with coal as the largest share.
These sources increase the region's emissions, which drive other issues such as global warming, rising sea levels, and ecosystem disruption.
Data centres water consumption demands is another emerging challenge on the environment, closed loop water reuse systems remain limited as according to ASEAN guide for sustainable data centre development making it so a large portion of the water used for cooling data centres be lost while the sum that comes back can be contaminated.
Additionally, the amount of water taken can critically harm direct drinking water supplies and water used for farming, raising concerns about water shortages in data-centre-heavy areas such as Selangor, Negeri Sembilan, and Johor in Malaysia, according to Greenpeace, an environmental activist group.
Concerns over noise pollution will also emerge once data centres are operational. As Greenpeace highlights, the constant humming of cooling systems, whirring of fans, and rumbling of electricity generators can make data centres emit noise ranging from 55 to 85 dB, possibly exceeding levels considered safe for hearing. This largely affects communities around data centres.
Overall, data centres can impact the environment through their energy demand.
Energy industries are pressured to generate more, which can increase emissions; the water supply needed can cause land subsidence and contamination, and noise pollution affects the lives of citizens in the areas where data centres are located.
🏠 Why it Hits Home
In Southeast Asia, locals can already feel the impact of data centres.
According to a news report by The Straits Times, a Singaporean news outlet, it describes the conditions of residents in Johor, Malaysia. They worry about their health and water supply as a data centre is being built next door.
As dust clouds from the construction became a daily occurrence for the residents, impacting day-to-day activities, the situation has spilt over into open protests against the construction.
🌐 How ASEAN has Responded
In December 2025, a new regional framework to handle the construction of data centres was released by ASEAN.
Designed for policymakers and regulators, the document aims to explain the trilemma that must be balanced for data centre construction, which is:
Digital expansion: scaling capacity for AI and cloud services.
Environmental sustainability: reducing carbon emissions, water, and waste footprints.
Resilience and resource security: safeguarding essential resources like electricity grids and urban water supply chains.
The framework proposes 4 elements for sustainable data centre development, which are:
Element & Renewable Integration: promotes measuring efficiency using Power Usage Effectiveness (PUE) and establishing predictable pathways for clear power procurement.
GHG Emission & Operational Efficiency: promoting transparency regarding emissions and measuring performance using metrics
Water Management & Cooling Innovation: targeting the challenge of water concerns directly, mandating measuring Water Usage Effectiveness (WUE) and taking into account local water stress
Waste & Circular Economy: targeting waste that is generated by data centres’ frequent hardware refresh cycles, promoting Extended Producer Responsibility (EPR)
🏁 Bottom line
While data centre construction supports the rapid expansion of digital adoption across Southeast Asia. it is important to remember the cost of this technology and why its environmental impact should not be taken lightly.
Denying advancement is one thing, its whole different thing denying the safety of Southeast Asia’s environment and its people.
At the end of the day, technological advancement should serve to strengthen local communities and support further development, not risk their environment.
🔎 Need More Angles?
AIINASIA: Why ASEAN’s Data Centre Boom Is Colliding With Its Power Grids
DIGITAL IN ASIA: Who is Building AI Data Centres in Southeast Asia in 2026? A Comprehensive Infrastructure Map
Analytic Insight: Why is Southeast Asia Becoming a Data Centre Hub?
International Energy Agency (IEA): What the data centre and AI boom could mean for the energy sector
Bain & Company: Southeast Asia’s Green Economy Report 2026
Greenpeace: Civil society calls for ban on data centres near residential areas
The Strait Times: Locals left asking what comes next after Johor’s data centre rush swallows their villages
International Energy Agency (IEA): Key Questions on Energy and AI
(FRD/QOB)