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Hyprop Investments Limited
Integrated annual report 2016
62
NATURAL CAPITAL: ENVIRONMENTAL IMPACT
continued
Current energy and carbon emission savings initiatives
INITIATIVE
OBJECTIVE
PROGRESS/CURRENT ACTIVITIES
At Clearwater Mall, phase 2 PV plant
increased to 1 500kWh and
commissioned August 2015
Reduce carbon emissions and reliance on the
grid
Total energy produced by phase 1 and 2 from
1 July 2015 to end April 2016 is 1,9GWh
Capital replacement programme
Ensures capital equipment at the end of its
lifecycle is replaced with energy-efficient
equipment against the following criteria:
non-ozone-depleting refrigerant gas; reverse
cycle heating instead of electrical element
heating; and performance co-efficient 3,5 or
better
All capital replacements are approved by the
national technical manager
At Somerset Mall, three package units were
replaced in the review period using non-ozone-
depleting R410 refrigerant and with unit
performance co-efficients of 3,6. At Canal Walk,
only one-third of planned units (32 units) were
replaced with R410 refrigerant and energy-
efficient inverter units. The balance was rolled
over to FY17.
Modify thermostat set points and
supply temperature for chiller water
Lower energy costs in winter and summer
Building management systems upgraded at
CapeGate and Somerset Mall
Variable speed drives (VSDs) for
heating, ventilation and AC systems
Match speed to required output to reduce
consumption
Two faulty VSD drives replaced at CapeGate.
VSD drives installed where practical
LED lighting and occupancy sensors
Improve lamp life and reduce required power
factor correction
LED outside parking lighting installed at
Woodlands Boulevard and Atterbury Value Mart
Implement preventive maintenance
programmes on AC equipment
Ensure optimal operation of equipment
National service level agreement signed with third
party for seven sites. Regional agreements signed
for Pretoria sites. Remaining sites have signed
agreements with local contractor or agent. All
sites now covered by service level agreements
Peak energy demand reduction
Reduce power consumption in peak periods
(premium tariff) and avoid expensive peaks,
reducing the cost of consumption
Solar PV at Clearwater has reduced peak demand
from 8 200kVA to under 7 000kVA. All power factor
units serviced under contract, reducing kVA
Water efficiency initiatives
The table below highlights ongoing opportunities to manage water more efficiently.
INITIATIVE
OBJECTIVE
CURRENT ACTIVITIES
PROGRESS
Smart metering
Improve measuring and
monitoring of water
consumption and identify leaks
from unusual ow patterns
Anomalies immediately agged,
limiting risk and consequential loss
Accurately tracking consumption
patterns optimises nancial bene ts
of time-of-use tariff
Balancing sub-meters back to bulk
meter at all times to ag any bypassing
Bulk check meters installed at
certain sites
Fire system water
consumption
Identify leaks and illegal use of
water
Save water and avoid abuse of
infrastructure
All buildings monitored