Lessons Learned
– Panel discussion
PV ‘lessons learned’ panel discussion
• PJ Rabie – Black River Park
• Sumaya Mahomed – City of Cape Town, ERMD
• Christian Skosan – V&A Waterfront
• Sebastien Lacour- Cape Town French School
• Michael Vice – Bayside Mall (Jeffares & Green)
• Simon Penso – Devilliers mall and De Waterkant (Spire)
• Chris Haw – Solar Future
• Frank Spencer – SAPVIA
• Ryno van der Riet – City of Cape Town, Electricity Services
• Nonhlanhla Miya - Eskom
PJ Rabie
– Black River Park
Black River Park – PJ Rabie
KEY INFO ON BLACK RIVER PARK
Black River Park
EE before
- Reconciliation of reticulation
- Conversion of all common lights to LED
- Tenant education and awareness
Length of process
First meeting to completion –
6 months
3 months one month later.
How on the roof
Non-penetrating fixing
mechanisms
Combination of ballasted
and non-penetrating fixes
When installed
Aug 2013
July 2014
Size in square meters
+- 8000sqm
Size in kWp
702kWp
% of total electricity
25-30% of total kWh and kVa
Cost of system
R22 million
kWh savings per year
2015 – 1’824’134 kWh
Total to date 4.4 GWh
Financial savings per year
Total to date R5.2m worth of energy savings
500kWp
Sumaya Mohamed
– City of Cape Town
City of Cape Town – Sumaya Mohamed
Sumaya & Priscilla at Gallows Hill, City of Cape Town office
EXAMPLE: 3 CITY OF CAPE TOWN BUILDINGS
GALLOWS HILL
ROYAL ASCOT
OMNIFORUM
EE before
LED Lighting and
occupancy sensors
LED Lighting and
occupancy sensors
LED Lighting and
occupancy sensors
Length of process
March 2013
June 2013
How on the roof
Bolted on concrete
flat roof (sealed
waterproofing)
Bolted to concrete
slabs on flat concrete
roof (no waterproofing
required)
Clasped to ‘corrugated’
flat roof top sheet with
‘Solar Roof Longline type
interface’ clasp
When commissioned
March 2014
June 2015
August 2015
Size in square meters
126m2
183m2
775m2
Size in kWp
10 kWp
20 kWp
60 kWp
% of total electricity
2% (20% total with EE)
7% (32% total with EE)
20% (33% total with EE)
Total Cost of system
R276 294
kWh savings per year
11,921 kWh (118,997
kWh with EE)
22,976 kWh (99,944
kWh with EE)
61,346 kWh (118,922 kWh
with EE)
Financial savings per
year
R 14,306 (R 142,797
with EE)
R 27,571 (R 119,933
with EE)
R 73,615 (R 142,706
with EE)
R1 713 762
8
Christian Skosan
– V&A Waterfront
• 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
•
•
•
•
8 rooftops being fitted with solar panels
R17Million ( 1 Mil US$), 1 093kWp project of which 900kWp installed
to date.
Further 1 MWp under investigation
250 kWp on new developments
SOLAR PANELS INSTALLED ON WATERFRONT ROOFS
KEY INFO ON V&A WATERFRONT – 1 of 2
BUILDING 1
Workshop 17
BUILDING 2
Clock Tower
BUILDING 3
Granger Bay
Yes
Yes
Yes
15 Weeks (5)
14 Weeks (4)
16 Weeks(6)
Clamped
Clamped
Mounted
30 Oct 2015
22 Oct 2015
19 Nov 2015
Size in square meters
2244.5
549.4
847.6
Size in kWp (1093)-900
348.40
85.28
131.5
% of total electricity
41.89
3
10.91
R 4 854 906
R 1 291 412
R 2 046 431
kWh savings per year
538 338
133 407
207 174
Financial savings per
year (R 275 217.31) 2
Months Jan-Feb
R 146 721.35
R 18 353.18
R 30 208.00
EE before
Length of process
How on the roof
When installed
Cost of system
KEY INFO ON V&A WATERFRONT – 2 of 2
BUILDING 4
Ports Edge
BUILDING 5
Breakwater
BUILDING 6
Two Oceans Aquarium (2)
Yes
Yes
Yes
16 Weeks (6)
15 Weeks (5)
15 Weeks
How on the roof
Clamped
Clamped
Clamped & Mounted
When installed
Nov 2015
Nov 2015
Nov 2015 (1)
Size in square meters
505.9
1283.1
303.2 (A)
Size in kWp (1093)-900
78.52 kwp
199.16 kwp
47.06 kwp (A)
37.82
19.12
3.28
R 1 297 266
R 2 903 196
R 2 070 644 (A+B)
kWh savings per year
123 990
312 330
200 896
Financial savings per
year (R 275 217.31) 2
Months Jan-Feb.
R 20 034.88
R 48 416.25
R 11 483.66
EE before
Length of process
% of total electricity
Cost of system
V&A Waterfront – Consumption from 2008 to 2015
Savings Graph 2008-2015
Saving of 19 077 608 kWh or 26% using 2008/2009 as the base year OR an additional
R9.68 Million/year. Cumulative saving of 44 492 612 kWh’s for the period April 2008 – March 2015
V&A Waterfront
Lessons Learnt:
•
Pick the low hanging fruit first when it comes to Energy Efficiency i.e. Lighting etc.
•
Do your research before deciding on final step. Best to slow down at times. Univ of Stel.
•
Look at project holistically, include roof repairs, waterproofing, strength of structures, elect
etc.
•
Shareholders support solutions that are feasible and sustainable to the business.
•
Communicate with tenants and get their buy-in.
•
Tenants have approached the Waterfront with regard to the installation of Solar Panels on
their respective buildings i.e. Allan Gray.
•
Make public aware of your sustainable projects and educate staff.
•
Transfer of skills to maintenance team. Let the Installer do the maintenance for first 24
months.
V&A Waterfront
Maintenance/challenges.
•
Get buy-in from the Sea gulls (owners/landlord) for use of their roof space. Currently only
affecting 2 roof areas, the problem is being addressed.
•
Take maintenance seriously as this has an impact on savings .
Sebastien Lacour
– Cape Town French School
ECOLE FRANCAISE DU CAP – CAPE TOWN FRENCH SCHOOL
KEY INFO ON FRENCH SCHOOL
Hope Street, Gardens
EE before
Energy Survey, Heat Pump, Reticulation
Upgrade, LED Lighting Retrofit
Length of process
Aug 2012 – May 2014, ± 20 months
How on the roof
Rail mounted
When installed
10 May 2014
Size in square meters
65 m2
Size in kWp
10 kWp
% of total electricity
22%
Cost of system
± R 250 000
kWh savings per year
± 16 000 kWh
Financial savings per year
± R 23 200
Michael Vice
– Bayside Mall
Bayside Mall
KEY INFO ON BAYSIDE MALL
Description
EE achieved
(incl. other interventions)
17% annually
Length of process
Project Development: 12 months
Installation: 3 months
How on the roof
Rubberised clamps; Modules not tilted
When installed
January 2015
Size in square meters
3,800 m2
Size in kWp
500 kWp
% of total electricity
± 10%
Cost of system
± R10 mil
kWh savings per year
800,000 kWh/yr
Financial savings per year
(incl. demand estimate)
± R1 mil
Emissions Reductions
± 800 tCO2eq annually
Simon Penso
– Spire Sustainable Solutions, various
buildings
Spire Sustainable Solutions – Solar PV Projects
KEY INFO ON 3 PROJECTS
Cape Quarter
Mixed-use Building
EE before
De Ville
Shopping Centre
382 Jan Smuts
Office Building
Yes
Yes
Yes
1 year
3 months
3 months
How on the roof
Clamped
Clamped
Ballast / Cable
When installed
Jan 2015
Nov 2015
Feb 2016
Size in kWp
212 kWp
320 kWp
120 kWp
5%
10%
28%
R5,1 mil
R2,2 mil
Length of process
% of total electricity
Cost of system
kWh savings per year
350 000 kWh
608 000 kWh
198 000 kWh
Financial savings per
year
R 410 000
R 770 000
R 251 000
Chris Haw
– SolaFuture, various buildings
KEY INFO ON BUILDING
To date
EE before
-
Length of process
Avg. 6-10 weeks on site
How on the roof
Various
When installed
2013-2015
Size in square meters
32,000
Size in kWp
4.08 MW
% of total electricity
Between 20-40%
Cost of system
14 – 17 Rand /W
kWh savings per year
Approx. 6.5m
Financial savings per year
Aprox. R7.5m
LUNCH & PV MARKETPLACE