Singapore learned to measure cooling. ASEAN should follow

# What Singapore did

Singapore has spent years building basic measurement systems for how buildings actually perform. For larger commercial buildings the country benchmarks whole-building energy use. Cooling systems — the biggest electricity users in many tropical buildings — face periodic energy audits. Building owners, engineers, and facility managers use those results to track plant efficiency and to compare cooling delivered against electricity consumed.

Those practices produce data that is practical and actionable: hourly or periodic consumption, audit findings on plant losses or control issues, and comparative benchmarks across building types. The data makes inefficiencies visible and creates a starting point for operational fixes, retrofits, and investment decisions.

# Why measurement matters for cooling

Cooling is both a large and growing share of electricity demand in Southeast Asia. Without reliable measurement you cannot:

• Know the baseline energy cost of cooling for different building types.
• Quantify how much energy can be saved by replacing equipment, improving controls, or changing setpoints.
• Target demand-side measures or incentives to the sites where they will have the biggest impact.

When plant efficiency and delivered cooling are measured together, facility managers can calculate metrics such as energy per ton of cooling or per square metre conditioned. Those metrics allow straightforward comparisons and prioritisation of interventions.

# The gap across ASEAN

Absent consistent measurement, the region risks underinvesting in efficient cooling or deploying measures that deliver smaller-than-expected savings. It also complicates grid planning because aggregate demand forecasts for cooling have higher uncertainty.

# What following Singapore would look like

Adopting Singapore-style practices across ASEAN does not require identical rules but it does require basic building blocks:

• Mandatory benchmarking for large commercial and public buildings, with published metrics.
• Periodic energy audits focused on cooling plant performance, controls and distribution losses.
• Standardised metrics for cooling output versus electricity input (for example, energy per unit of cooling delivered).
• Training and certification for auditors, engineers and facility managers so measurements are comparable.

These measures produce immediate operational value — revealing control faults, leakages, and maintenance gaps — and also improve the economics of larger investments such as chiller replacements, building envelope upgrades, and centralized cooling systems.

# Practical benefits and near-term wins

Pilots can start with public-sector buildings or large commercial campuses where administrative authority and concentrated demand make implementation simpler. Standardised reporting templates and a public benchmarking portal accelerate uptake and create peer pressure to improve.

# Bottom line

Singapore's progress shows that measuring cooling is a pragmatic, low-tech step with outsized returns: it turns an invisible cost into a manageable metric. For ASEAN policymakers and building managers who want to reduce energy use, lower peak demand, and make cooling investments bankable, measurement and audits are the logical first move.