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2.5 New Buildings Roadmap
To enhance the minimum performance
of commercial buildings, the focus will be
on enhancing the building energy codes
that target the BSI. On the other hand, the
focus for residential buildings is to facilitate
behaviour change through building designs
(e.g. natural ventilation, improved façade
performance).
• BEC for commercial buildings – the
primary control of minimum standard
will be done through the code. For
comprehensive enhancement of building
performance, the code must not only
be evolved through gradual tightening
of equipment specification, but also by
including more controls that directly
influence energy consumption (kW/ton
of air-conditioning, EUI for particular
building types etc.); and
• Guidelines on Design and Construction
Requirements for Residential Buildings
for Energy Efficiency – is an initiative
that targets building façade and layout
design to enable behaviour change. We
outline some refinements necessary
in the coming years in order for the
Guidelines to make a significant impact.
While the exact path to extensive enhancement of new building design is yet to be determined,
we can select a particular scenario to illustrate the magnitude of the task.
• Improve average Building Services Installation (BSI) EUI of new commercial buildings by 40%
as compared to 2012 new buildings (65% reduction from 2005 average).
0
50
100
150
200
250
300
350
40%
Average building in 2005
New building in 2005
New building in 2012
Lighting system
(40%)
Air-side system (30%)
Water-side system (30% )
Heat rejection system (40%)
Chiller system (35%)
Lifts and escalators system (10%)
Other systems (25%)
65%
Building Services EUI [kWh/sqm]
Façade systems (40%)
Remark: Bracketed percentage refers to increase in efficiency to that specific system through equipment specifications and enhanced
controls/operation
0
50
100
150
200
250
300
350
35% Reduction
Average building in 2005
Minimal-Intervention Commercial Building
Full-Intervention Commercial Building
retrofitted to BEC 2012
Lighting system (40%)
Air-side system (30%)
Water-side system
(30%)
Chiller system (40%)
Lifts and escalators system (10%)
Other systems*
(25%)
55% Reduction
Building Services Installation EUI
[kWh/sqm]
Remark: Bracketed percentage refers to increase in efficiency to that specific system through equip ent specifications and enhanced
controls/operation
*Other systems include: Centralised hot water, Pumping, Mechanical ventilation, etc.
Beyond BEC 2012
Increasingly efficient designs for new buildings