Our approach to sustainability
Colin Devenish
November 2015
180
rugby
fields
•
•
•
•
300 acres … a large sized town
19 000 people work here every day
1 500 people live here
180 000 visitors a day in peak season or 24 Million visitors a year
78 287 166 kW hours
April 2008 – March 2015
total
energy
saving
savings:
• 26% of total consumption
• R9.7m saved in 2014
Annual electricity consumption (kWh’s) 2007 - 2015
Energy Consumption (kWh's) Trend
75000,000
72787,835
70000,000
66078,903
64943,212
65000,000
65910,711
63126,386
60000,000
56419,429
55000,000
53512,927
53374,190
50000,000
April 2007 - March 2008
April 2008 - March 2009
April 2009 - March 2010
April 2010 - March 2011
April 2011 - March 2012
April 2012 - March 2013
April 2013 - March 2014
April 2014 - March 2015
Maximum Demand (kVA) 2008 - 2015
14,000
Average Monthly Maximum Demand (kVA)
12 247
12,000
11 519
11 455
10 957
10 413
10 217
10 552
10,000
8,000
Breakwater
West Quay
6,000
Alfred Mall
4,000
Granger Bay
Court
Clocktower
2,000
Vic Wharf
,0
Reduction in Maximum Demands (kVA) of up to 13 % per month
purchasing and procurement
biodiversity management
business partnerships
communications and marketing
design and construction
resource management
(water, electricity, gas, waste, etc.)
transport and vehicle maintenance
community involvement
management systems
So how did we achieve this?
PEOPLE
&
TECHNOLOGY
People
•
Staff that want to learn
•
Shareholder, CEO and EXCO buy-in
•
Willing to try new ways of doing things
•
Celebrate successes
•
Included in Staff KPAs
•
Dedicated Utilities Analyst
•
Sustainability Committee – All Departments
a holistic approach to sustainability
Energy
Water
Waste
Landscaping
Carbon footprint
Transport
Education
Innovation
New & Existing
natural
light
• main mall lights off during day
• where possible buildings not lit at night
Saving the Planet – one LED at a time
Before = 1 910 Watt
Original 50W down
lighter
2009 = 513 Watt
Original 2 x 13W compact
fluorescents
New 1W LED down
lighter
New 2 x 26W compact
fluorescents
2013 = 213 Watt
New 1 x 18 W LED
New 2 x 6W compact
fluorescents
All fittings manufactured in Cape Town
Lighting Initiatives
8.5 m = 150 W
8.5 m = 5-6 light
fittings = 348 W
seawater
cooling
first generation chiller C.O.P. 4
new
generation
AC units
new generation centrifugal chiller
C.O.P 7 (2009) – C.O.P 11 (2015)
• 25% saving in electricity
• from independent chiller plants to district
cooling
A/C BMS Integration
Water and Electrical savings on A/C
,300
Phase 1 2014 Average 84 kl/day
2015 YTD 60.47 KL/day average
• Move from Constant volume
,250
to Variable volume system
Phase 3 2014 Average 20.92 kl/day
2015 YTD 19.77 kl/day average
• Introduce Economy cycle.
,200
Replace AHU with 100%
,150
Fully Switched over to BMS Optimization
Phase 1
fresh air.
Phase 3
• Water meters on all cooling
,100
towers.
,50
,0
Tenant Criteria Document Update
2008
2013
Current
Watts/m² - AC
45
40
20
Light Fittings
150w
70w
35 metal halide or less
(LED)
No neon
No neon
LED only
Water wash &UV
UV only
UV only (with
maintenance plan)
Geysers
Geysers
Heat pumps only
Shop Signs
Extract Canopies
Hot water
cylinders
Tenant
Area size
Average cons/ before
energy savings
Average cons/after
energy savings
kWh / m2
before
kWh / m2
after
Tenants implementing Energy Saving
Uwe Koetter
29
1201
881.4
41
30
Lorraine Efune
Jewellers
81
9056
2294
112
28
Jeweller XYZ
103
9511
92
48.8
Jeweller 123
130
7820
60
Waterfront
Jewelers
before: 48kw
replacement
of Sewage
Pumps
Before
After
2 x 13 kW
2 x 9 kW
2 x 9 kW
2 x 7,5 kW
3 x 48 kW
3 x 37 kW
188 kW
144 kW
after: 37kw
• R17Million, 833kWp project approved by Shareholders. Contractor to be
appointed shortly
• 6 rooftops to be fitted with solar panels
• Further 817kWp under investigation
Goal: 2 megawatt installed
solar
energy
• 8 rooftops being fitted with solar panels
• R17Million, 1 093kWp project
• Further 1 MWp under investigation
Start of PV Installation Project
75% complete with installation – this will generate up to 1.1MW of
power. Clock Tower & Watershed on line – 430kWp
Clock Tower, Ports Edge, Granger Bay, Watershed, Breakwater all panel installation 100% complete. On line by end November
Water Infrastructure Management
•
Installation of PRVs (Pressure Reducing Valves) on main
incoming lines. Pressure now set at 6 Bar, vs. 9 Bar
previously
•
Since the implementation of this change we have reduced
the number of major plumbing failures due to pressure
fluctuations.
•
Currently we use the Sanitree Waterless Urinal trap units
and find that they are highly effective when implemented
with a timed flushing system. We flush the urinals with 1lt
every 2 hours thus reducing the consumption due to
sensor flushing.
•
Testing electronic bathroom equipment that is supplied
with power generated from the water supply coming into
the building.
consumption in KL - metering example
Areas m² KL/m² Description
66
2.85 Quay 6
167
1.23 Premier Fishing
405
2.31 Bus Terminus
136
6.82 Table Bay Parking
1 018
0.28 Table Bay Circle
1 779
1.79 Circle 4
2 273
0.74 IRT Wharf Entrance
12 810
0.56 Breakwater Parking
232
1.55 Circle 2A
117 46.66 Granger Bay Parking
544
1.19 Granger Bay Parking
850
1.80 Granger Bay Parking
2 173
1.98 Croquet Lawn
38
3.79 Aquarium
1 109
1.76 Dock Road BP
38 419
0.11 Dock Road Gulmarn
2 499
1.10 Dock Road Ellesmere
740
9.11 West Quay
190
2.52 Marina Centre
320
0.92 Bascule Bridge Circle
225
0.01 Synchro Lift
1 380
0.73 South Arm Road
1 120
3.86 Canal Site
100
2.59 Court Heli Irr W
68 710
0.71
Jan-14
Feb-14 Mar-14 Apr-14 May-14 Jun-14
19.00
19.00
107.00
46.00
35.00
34.00
36.00
54.00
115.00
94.00
94.00
94.00
118.00
24.00
172.00
134.00
126.00
127.00
123.00
26.00
522.00
497.00
528.00
373.00
261.00
58.00
449.00
379.00
410.00
200.00
131.00
58.00
13.00 1 332.00 1 116.00 1 007.00
228.00
49.00
27.00
114.00
140.00
30.00
1 493.00
975.00
476.00
188.00
192.00
10.00
242.00
140.00
121.00
26.00
23.00
5.00
202.00
225.00
270.00
34.00
250.00
828.00
621.00
461.00
501.00
151.00
16.00
11.00
15.00
18.00
16.00
3.00
182.00
139.00
218.00
263.00
251.00
134.00
388.00
328.00
562.00
599.00
553.00
162.00
421.00
310.00
451.00
297.00
526.00
74.00
1 180.00 1 923.00 1 297.00
831.00
212.00
67.00
58.00
53.00
57.00
53.00
10.00
44.00
36.00
35.00
33.00
35.00
37.00
2.00
1.00
130.00
302.00
320.00
1 973.00 1 175.00 1 022.00
100.00
46.00
32.00
39.00
33.00
38.00
37.00
6 244.00 6 612.00 8 638.00 5 931.00 5 097.00 1 579.00
Jul-14
2.00
14.00
10.00
5.00
11.00
103.00
33.00
34.00
212.00
Aug-14
4.00
4.00
Sep-14
Oct-14 Nov-14
3.00
20.00
112.00
151.00
88.00
86.00
26.00
102.00
381.00
254.00
54.00
1 164.00
808.00
583.00
352.00
32.00
29.00
226.00
148.00
468.00
53.00
8.00
20.00
270.00
218.00
591.00
485.00
398.00
173.00
60.00
333.00
366.00
24.00
69.00
10.00
10.00
122.00
9.00
1.00
60.00 4 848.00 3 399.00
Dec-14
20.00
133.00
45.00
161.00
316.00
1 476.00
1 190.00
29.00
174.00
1 219.00
33.00
282.00
547.00
99.00
527.00
88.00
43.00
34.00
13.00
6 429.00
Hand Dryers vs. Paper Towel Dispensers
•
•
•
•
•
Slight increase in electrical consumption –
R40k/year
Replaced 120 hand towel dispensers with
hand dryers – saving of R800K per annum
and diverting another 42 tons of waste from
landfill
Paper towels not biodegradable.
All plastic bags used is made from recycled
material
All toilet paper made from recycled material
Waste Recycling Statistics
• Target is to divert 80% of
our waste from landfill by
mid 2017.
• Commenced trials with 7
tenants in August on an
AgriProtein project.
• To date diverted 30 tons of
organic waste from landfill
• Roll-out to rest of F&B
tenants 1 December 2015
green
innovation
• 1 X 6-star and 3 X 4-star rated buildings
goal: all new buildings … minimum 4-star status
• 103 000m² rated to date
• 5 X building under construction which would be rated
R48m
invested in
sustainability
projects
• the right thing to do … good business sense
• R.O.I. never more than 4-years
• biggest return … visitors and partners who believe
in us
Our approach to sustainability
Colin Devenish
November 2015