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The 18-storey Keppel Bay Tower achieved Green Mark Platinum (Zero Energy) certification from Singapore's Building and Construction Authority (BCA), becoming the city's first commercial building to meet these stringent performance standards. This milestone demonstrated that substantial energy reductions are achievable in existing commercial buildings through targeted retrofits. So, building operators across Singapore gained a proven pathway to meet increasingly strict environmental regulations.
Project performance metrics
Independently verified fan performance by Nanyang Technological University (NTU)
Rapid installation completed during planned maintenance windows with minimal operational disruption
Exceeded the 20% target requirement for Green Mark Platinum (Zero Energy) certification
Government grant validates technology selection
BCA awarded Keppel Land a $1 million grant through the Green Buildings Innovation Cluster programme. NOVENCO axial flow fans met requirements among 50 applicants competing for 5 technology partner positions. The competitive selection process verified that the proposed solution offered both technical merit and practical implementation value, because government evaluators prioritised technologies demonstrating measurable performance improvements with scalable deployment potential.
Project specifications required energy consumption reduction of 20% beyond Singapore Green Mark Platinum standards. This demanding target meant that conventional retrofit approaches would prove insufficient, so Keppel Land needed advanced fan technology capable of delivering step-change improvements rather than incremental gains.
Rapid installation completed in under 10 hours
ZerAx® axial fan replacement targeted existing centrifugal fan installations in air handling units. The retrofit incorporated EC+ concept technology with high-efficiency motors, Danfoss VFD®s for variable speed control, and rapid installation completed within less than 10 hours.
Building operations continued with minimal disruption because the installation team executed the changeover during planned maintenance windows, avoiding costly downtime. ZerAx EC+ fan specifications delivered a verified 43% energy reduction through independent validation.
Third-party verification exceeds target by 11%
Nanyang Technological University (NTU) provided third-party verification of EC fan performance to ensure objective measurement of results. Final building energy consumption documentation showed 22.3% reduction in February 2020, exceeding the 20% target and validating the technology selection. Independent verification eliminated any uncertainty about actual performance, because project stakeholders required credible evidence before committing to additional phases.
Current project includes replacement of 21 additional centrifugal fans with NOVENCO ZerAx fan specifications. This expansion reflects confidence in the technology's proven capabilities, so the building will achieve even greater energy reductions as the full retrofit programme progresses.
$1 million
Government grant awarded1st
Commercial Zero Energy building in Singapore21 fans
Additional retrofit expansionRecognition and expansion
The project secured a $1 million government grant through BCA's Green Buildings Innovation Cluster programme, competing successfully against 50 applicants. As Singapore's first commercial building to achieve Green Mark Platinum (Zero Energy) certification, Keppel Bay Tower demonstrates the viability of deep energy retrofits.
Recognition and expansion
The project secured a $1 million government grant through BCA's Green Buildings Innovation Cluster programme, competing successfully against 50 applicants. As Singapore's first commercial building to achieve Green Mark Platinum (Zero Energy) certification, Keppel Bay Tower demonstrates the viability of deep energy retrofits.
