Energy Efficiency Forum

Colin Devenish April 2013

PRESENTATION OVERVIEW

• Overview of Precinct

• V&A projects

• Tenant education & Case study

• Achievements to date

• New developments

IT ALWAYS SEEMS IMPOSSIBLE UNTIL IT’S DONE

Nelson Mandela

“The historic docklands around the Victoria and Alfred Basins in Cape Town should be redeveloped as a mixed use area, focusing on tourism and residential development, and most importantly,

retaining the working harbour in operation” – Burggraaf Committee 1987

THE V&A WATERFRONT – KEY FACTS

Over 123 hectares (300 acres – or 80 rugby fields)

Some 16,000 people work within

Over 450 stores with 80 restaurants and eateries

10 hotels and a range of office, retail, industrial & residential buildings

Over 23 million visitors per annum – most visited attraction

The V&A Waterfront has undertaken energy saving projects in excess of R30 million, and these include: • Installation of lighting controls

• Installation of energy efficient lighting and repositioning/relocating of light fittings

• Upgraded Air Conditioning BMS

• Installation of new chillers with higher COP’s, variable speed drives on pumps and motors

• Replace Air handling Units & include economy cycle

• Installation of meters and development of credible metering and billing systems

OTHER INITIATIVES:

• Benchmarked and identified areas requiring attention

• Included targets in Staff Performance Contracts

• Established Sustainability Committee and registered with Heritage Environmental Rating Programme – Achieved Gold Rating

POWER FACTOR CORRECTION AND

AIR CONDITIONING CONTROLS

Installation of Power Factor Correction

• Reduced Maximum Demand.

• Weekly inspection of substations in order

• to identify possible problems and installed remote

• monitoring. • Spent R180k in 2008 – Payback ± 2 years.

• Spent R80k in 2009 – Payback ± 3 years.

Air Conditioning Controls

• Changed operating times according to seasons and outside weather conditions. Immediate results of R50k/month.

• Control of chilled water temperature – between 6 and 9 °C. Control chilled water temperature versus cooling and then reheating.

• Currently installing additional controls: 3 year programme.

LIGHTING AND CONTROL SYSTEM

3. Installed efficient lighting

• Phase 1 - 2008: R3.2 million. Installation of energy efficient lighting and control system. Pay back period on 2008 tariffs – 20 months.

• Phase 2: R2 426 263.93. Initial pay back period of 5.27 years. Installation of more efficient lighting as well as upgrading of lighting levels.

• Installed / upgraded control system.

Reduced maintenance costs – longer life lamps, bulk replacement with guarantees, no need to paint ceiling, etc.

LIGHTING INITIATIVES

Before:

• 3 x 50W low voltage downlighters • Total : 150W • Lamp life ± 1000 hours

After:

• 3 x 1W LED cone downlighters • Total : 3W • Lamp life of 50 000 hours

New 1W LED cone downlighter

Original 50W low voltage downlighter

Before and After light levels.

Original 2 x 13W compact fluorescents

Original 50W down lighter

New 2 x 26W compact fluorescents

New 1W LED down lighter

Before = 1 910 Watt

2013 = 213 Watt

2009 = 513 Watt

New 2 x 26W compact fluorescents

New 1 x 18 W LED

LIGHTING INITIATIVES

8.5 m = 150 W 8.5 m = 5-6 light fittings = 348 W

LIGHTING INITIATIVES

Before: 2 x 58W parking fittings = 15 fittings

Total = 1 740 W

After: 2 x 58W parking fittings = 8 fittings

7 fittings removed New load = 928 W

AIR CONDITIONING

This is a first generation Chiller with a low co-efficient of performance (COP of 4).

Installing new centrifugal Chillers with COP of 7. This has lead to significant electricity saving.

Current Project – R15 Million – Completed November 2009 • Replace 4 x screw chillers with 2 x Centrifugal

chillers - 25% saving in electricity • Part of normal end of life replacement • Improve controls and introduce more fresh air

control • Moving from a constant volume to variable

volume system – Variable speed drives on air handling units, Variable volume diffusers

ENERGY SAVING INITIATIVES

• We had independent Chiller Plant Rooms • We are moving to a District Cooling philosophy • This will also lead to significant energy savings • Reduces overall redundancy and improves flexibility

Plant Room No. 1

Plant Room No. 2

ENERGY SAVING INITIATIVES

Cleaning of Filters and Coils of Air Handling Units: • Improves air flow • Reduces power • V&A now uses ISO 14001 rated

chemicals and not harmful acids • Improves lifespan of equipment

RESULTS OF INSTALLING NEW CHILLERS AND IMPROVED AIR CONDITIONING CONTROLS

LIFTS & ESCALATORS

ESCALATORS: Consumption of current escalators:12.4kW/h. Savings to be achieved with installation of 4 x new Schindler escalators to be installed in 2013:

Schindler escalators 10,0 kW

A saving of 4 608kwh/month @ 45c/kWh

= R2 074/month or R24 883/year.

UPGRADED / REPLACED 3 X LIFTS IN 2009

Replaced equipment due to end-of-life. Total consumption of 3 x lifts from 2nd lowest tenderer = 6kW/h vs. consumption of lowest tenderer being 17.1kW/h. Appointed 2nd lowest tenderer as cost difference resulted in 7 year payback based on electrical consumption and current increases.

REPLACEMENT OF SEWAGE PUMPS

Before: 48kw After: 37kw

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

Am

ount

6,32

6

7,94

3 6,

847

7,

881

7,

368

6,75

1 6,

790

8,

373

7,

931

6,60

0 6,

593

7,

368

T/A UMFA - UMFA WC BUSINESS TRUST Registration No: IT 113/2009

P O Box 13434, N1 City, 7463 61 Durmonte str, Durmonte, Western Cape Province, 7550 Tel: 021 9790800 (082 7854202) Fax: 086 611 4081

EMail: capetown@umfa.co.za Website: www.umfa.co.za

Tenant Name: Building Units Notes

Victoria Wharf 147

Acc No Area

41259 103.00

Vat Reg:

Consumption Report June 2010 (32 days)

Date Description Levy Vat Amount

2010/06/21 Electricity kWh 6,463.27 904.86 7,368.12

Total Charges 6,463.27 904.86 7,368.12

Meter Readings

Tenant Rand Statistics

Meter No

Previous 2010/05/20

Current

2010/06/21

Usage

Fct

% Cons

10000

(E)671 475834 485612 9778 1 100.00 9778

8000

6000

4000

2000

0

Reading Period

Supplier(s) City of Cape Town

Tariffs E-SHC

Charge p/u 0.62330

Basic Fee 11.52000

CONSUMPTION REPORTS: • Provide consumption details

• Trend of monthly costs

• Consumption reports provided to

all tenants

• Direct billing – “you use, you pay”

CREDIBLE METERING SYSTEM

CONSUMPTION IN KL – metering example

• Tenant workshops on Energy Efficiency

• Advise Tenants on various products, contractors and suppliers

• Service providers / consultants undertake some work on risk

• Undertake alterations / install new equipment when premises are upgraded

• Increase direct billing and reduce common area operating expenses.

People tend to behave differently when they are in control or can make the

changes.

TENANT EDUCATION

TENANT EDUCATION

1. Update of tenant criteria document

2. Review of tenant interior designs and advise them on cost effective and energy saving designs or alternate options

Before New Heat load 45w/m² Heat load 40w/m²

Neon lighting for signage LED and fluorescent

Halogens 50w with magnetic ballast LED or max 20w with electronic gear

Metal Halide 70-150w LED or max 70w Metal Halide

Geysers Heat pumps

All other lighting control gear,

magnetic All other lighting control gear, electronic

WATERFRONT JEWELLERS – CASE STUDY

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

TOTAL CONSUMPTION IN kW

CONSUMPTION 2008 – MARCH 2012

69590,711.60

72587,835.60

66078,903.20 64943,212.00

61326,386.00

54000,000.00

56000,000.00

58000,000.00

60000,000.00

62000,000.00

64000,000.00

66000,000.00

68000,000.00

70000,000.00

72000,000.00

74000,000.00

April 2007-March 2008 April 2008 - March2009

April 2009 - March2010

April 2010- March 2011 April 2011 - March 2011

Energy (kWh) Usage Trend

Saving of 11,261,449kWh or 15,5% using 2008/2009 as the base year OR an additional R5.6Million/year

Cumulative saving of 25,415,004 kWh for the period April 2007 – March 2011

-

2,000

4,000

6,000

8,000

10,000

12,000

14,000

April 2008 - March 2009 April 2009 - March 2010 April 2010- March 2011 April 2011 - March 2012

Average Monthly Maximum Demand (kVA)

12 247 kVA

11 519 kVA

11 455 kVA

10 957 kVA

10.53% saving from 2008/9 to 2011/12

MAXIMUM DEMAND IN kVA 2008 – 2012

THERE ARE A NUMBER OF ENVIRONMENTAL AWARENESS INITIATIVES PLANNED FOR THE NEXT FEW MONTHS: WE CELEBRATED EARTH HOUR ON 23 MARCH

The Heritage standard addresses: • Purchasing and Procurement

• Business Partnerships

• Design and Construction

• Transport and Vehicle Maintenance

• Biodiversity Management

• Communications and Marketing

• Resource Management (Water, electricity, gas, waste, etc)

• Community Involvement

• Management Systems

Energy Management is part of our Environmental program

From Silver in February 2012 to Gold in November 2012

AWARDS RECEIVED

Eskom ETA Awards 2012

City of CT Energy Efficiency Forum Award 2012

Environmental Heritage System

Energy efficiency awards

ALL NEW DEVELOPMENTS IN THE PRECINCT WILL BE AT LEAST 4 STAR RATED

New Allan Gray Head Office 6 Star As Design rating achieved in February 2013

WAY FORWARD

1. Complete current lighting project:

• Potential 3GWh or 3 000 000kWh saving per year • R4,4 Million project

2. Continue with tenant education. 3. Update of tenant criteria document and implementation of Green Lease.

4. Improve on data analysis.

5. All future developments to be designed and built following Green Building

guidelines.

6. Have just completed our Carbon Footprint audit.