A pioneering EndoCool pilot, the first of its kind in Singapore, has delivered measurable gains in real-world performance.
A pilot of EndoCool to verify savings in South-East Asian climates was run by Great Eastern at 200 Changi Road in Singapore. The 10,900m2 office building is cooled by 2 x 320 RT air-cooled chillers.
The main objectives of the EndoCool pilot project were:
- Improve the thermal-dynamic response of the system allowing it to better match supply with fluctuating demands thereby minimising energy wastage. This manifests in a reduction in overall consumption.
- Improve component efficiency, which may be observed in e.g. ikW/RT and therefore in the reduction in overall energy use.
Continuous interval data was provided, which included referenced flow temperatures, flow rates, chiller power, ambient temperature, and relative humidity. EndoCool was dosed in June 2025 with performance analysis conducted through the end of October 2025.
Over the reporting period the average mean power was 7.4% lower than the baseline period. This result is lower than results experienced in more seasonal climates but likely due to the reporting period being over the hotter / humid months in Singapore where loads are more consistent.
A similar analysis comparing chiller performance (ikW/TR) showed a similar comparison over periods with similar outdoor air temperatures. This appears to be stronger during lower temperatures possibly due to the chiller part-loading / cycling vs full load at warmer temperatures. The average improvement in ikW/RT was 5.3%.
This data can be extrapolated to estimate that the project will save 43MWh. The average commercial rate of electricity in Singapore in 2025 is SGD $0.292/kWh meaning this project has an expected saving of SGD $12,556 (approximately $9,758.68 USD based on the exchange rate at the time of publication) with an expected ROI just over 2 years.
In Singapore, according to the NCCS, 1kWh of electricity releases approximately 0.402kg of CO2e of emissions into the atmosphere. Therefore a saving of 43MWh is an expected reduction of 17,329kg of CO2e, or 17.3 metric tonnes of carbon equivalent emissions. These savings can be visualised as:
Why It Matters in Singapore?
In Singapore’s tropical climate, mechanical cooling accounts for a large share of electricity consumption across commercial buildings and industrial facilities. To help improve energy efficiency and reduction carbon emissions; Singapore’s Minimum Energy Efficiency Standards (MEES) framework, administered by the National Environment Agency (NEA) sets minimum performance thresholds for electrically-driven, water-cooled chilled water systems. Facilities over certain capacities are required to achieve prescribed efficiency benchmarks (for example, roughly 0.68 kW/RT at typical chilled water supply temperatures) by specific compliance deadlines, with existing energy-intensive facilities already subject to MEES since late 2025 and all facilities required to comply by 2029. Deploying a technology that can help reduce the ikW/RT of chillers by over 5% can be a significant help in making buildings compliant.
Business and Policy Benefits
For industrial operators and large commercial landlords, the benefits of higher chiller efficiency are multifaceted:
- Lower Operating Costs: Reducing electricity consumption directly cuts utility bills — a major expense for cooling-intensive facilities.
- Regulatory Confidence: Enhanced system performance helps ensure facilities satisfy MEES requirements ahead of key deadlines (2025 for many industrial sites, 2029 for all remaining existing facilities).
- Reduced Carbon Footprint: Less energy use translates to lower greenhouse gas emissions, aligning with Singapore’s national climate goals.
- Improved Asset Value: Buildings with efficient cooling systems typically command higher market value and appeal to sustainability-focused tenants.
Beyond regulatory compliance under MEES, improving chiller efficiency also delivers strong advantages under Singapore’s Building and Construction Authority (BCA) Green Mark scheme. The BCA Green Mark Scheme awards points for enhanced energy performance, particularly in air-conditioning and mechanical ventilation (ACMV) systems, which typically account for 40–60% of a commercial building’s energy use in Singapore’s tropical climate.
A 5%+ improvement in chiller efficiency (ikW/RT) directly boosts a building’s Energy Efficiency Index (EEI), helping developers and asset owners achieve higher Green Mark certification tiers such as GoldPLUS or Platinum. This not only enhances corporate ESG positioning and investor attractiveness, but can also improve tenant demand, rental premiums, and long-term asset valuation in Singapore’s increasingly sustainability-driven property market.
For large commercial buildings and data-intensive facilities, incremental gains in chiller plant performance compound into substantial lifecycle cost savings while supporting Singapore’s national decarbonisation targets under the Singapore Green Plan 2030.
Looking Forward
With Singapore’s MEES compliance timelines tightening and energy costs rising globally, innovations that deliver measurable efficiency gains are poised to play a central role in advancing both industry competitiveness and national sustainability targets.Get in touch with the EndoCool team
UK & Europe
Email: enquiries@endocool.com
Telephone: +44 (0)1925 747 101
USA, Canada & Rest of the World
Email: enquiries@endocool.com
Telephone: 778-895-1990
EndoCool is part of the EndoTherm product family and a registered product of Endo Enterprises (UK) Ltd.
EndoTherm is an energy saving additive for heating systems
Endo Enterprises (UK) are experts in water treatment solutions.
For more info visit www.endoenterprises.com