+IMPACT MAGAZINE ISSUE 22

THOUGHT LEADERSHIP
there is an overall reduction in energy consumption. Water
efficient fixtures and conservation measures typically have
a short payback period and mitigate against the effect of
climate change while future proofing the development
against the impacts of water shortages and the demand
on potable water. The rainwater storage systems combine
captured water for later use, using rainwater reservoirs in
underground tanks.
EMBODIED ENERGY
With environmental impact front of mind as well as
reduction of associated carbon emissions and energy
use, the design team meticulously selected sustainable
materials, for example, selecting timber rather than glass
for balustrading. Building lifecycle energy impacts have
been considered. Currently, embodied energy is of relative
insignificance, however, as energy consumption is driven
down, the importance of embodied energy increases; this
consideration is vital to future proof the development
for the benefit of the next generation. Design modelling
and simulation have assisted in controlling the form and
surface areas of the building to make the most of natural
sunlight and ventilation and to reduce the embodied
energy in the homes.
MEASURING THE BENEFITS
An EDGE Zero Carbon Certificate is available in the
operations phase for those that wish to attain it, with the
prerequisite they have an EDGE Advanced status. Clients
can now enjoy the benefits of certified green buildings
with incentives that allow for rebates in rates and taxes
linked to the level of EDGE certification achieved over the
next few years. Smart meters throughout the homes will
provide homeowners with measurable indicators of energy
and water usage and how best to save energy and water.
For more information, please visit www.nexxagen.com
or www.aurumzimbali.co.za
Green
Building
Materials
Based on the resource-efficient design, material selection
and expert construction of each innovative residence, an
EDGE-certified home is being pursued on completion.
and
THE BENEFITS
• Offset energy and water costs with the ability to sell energy into the grid
• Improved and consistent indoor air quality
• Enhanced occupant health, comfort and wellbeing
• Higher sales and rental prices (home buyers will pay more for efficient homes with lower bills)
• Increased resale values
• Quick payback period for green measures
• Less maintenance costs due to quality construction
• Better occupancy rates
• Lower utility bills which can be used to offset the ever-rising costs of levies, rates and taxes
• Green mortgages minimise upfront costs and lower interest rates
• Reduced mortgage cost can finance green measures and innovative models can be explored to install them
• Certification provides quality insurance
• Decrease greenhouse gas emissions
• Extended equipment life due to less demand on the HVAC system and other appliances
• Capex costs are lower through the passive design of EDGE certified homes
• Passive designs have negligible costs but enhance the net-positive benefits
Technologies
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