Public report 2013 Part 1 Corporation details



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PUBLIC REPORT 2013

Part 1 - Corporation details

Controlling corporation


Insert the name of the controlling corporation exactly as it is registered with the EEO Program.

Brisbane City Council

Table 1.1 - Major changes to corporate group structure or operations


Table 1.1 – Major changes to corporate group structure or operations in the last 12 months

Nil

Declaration


Declaration of accuracy and compliance

The information included in this report is to the best of my knowledge, correct and in accordance with the Energy Efficiency Opportunities Act 2006 and Energy Efficiency Opportunities Regulations 2006.



Colin Jensen

Chief Executive Officer



Date 5/12/13

Part 2 - Assessment outcomes

Table 2.1 – Assessment details

It is compulsory to complete a separate table for each entity* that has been assessed

Name of entity

Streetlights



Total energy use in the last financial year

173,394

GJ

Total percentage of energy use assessed when assessments were undertaken

95

%



Description of the way in which the entity carried out its assessment:

Council’s fleet of street lights fall into 3 categories, namely Rate 1, Rate 2 or Rate 3. Rate 1 and Rate 2 lights can only use technologies that are approved by Energex. Currently, there are only two energy efficient technologies approved by Energex, and these technologies can only be deployed in certain locations (for technical reasons). The two technologies are T5 2x14 Watt linear fluorescent lights, and 32 Watt compact fluorescent lights. Council has identified deployment of this technology as an energy efficiency opportunity. The project to implement this energy efficiency opportunity is known as the 25,000 Street Lights Retrofit project.

Rate 3 lights are not restricted to Energex approved technology so could be retrofitted to achieve improved energy efficiency using a range of different energy efficient technologies. Rate 3 lights represent 5% of the total electricity demand for street lights in the city and have not been assessed in detail at this stage.


The savings forecast for the 25,000 Street Lights Retrofit project is based on the mix of lights completed after 6800 retrofits. This figure is then extrapolated out to 25,000 lights based on hours of operation per annum. Upon completion, the project is expected to save Council more than $500k per annum in energy costs.


* Entity is group member, business unit, or key activity. Please note that, for individual sites that use more than 0.5 PJ of energy, all energy use must be assessed (less a small proportion for
non-integral energy use).

Table 2.2 - Energy efficiency opportunities identified in the assessment


It is compulsory to complete a separate table for each entity that has been assessed

Status of opportunities identified to an accuracy of better than or equal to ±30%

Business Response

Total

number of opportunities

Estimated energy savings per annum by payback period (GJ)

Total estimated energy savings per annum (GJ)

0–2 years


2–4 years

> 4 years

No. of opps

GJ

No. of opps

GJ

No. of opps

GJ

Outcomes of Assessment

Implemented

























Implementation commenced

1













1

9273

9273

To be implemented























Under investigation

























Not to be implemented

























Status of opportunities identified to an accuracy of better than or equal to ±30%

Total identified

1













1

9273

9273

Please note that corporate groups are not required to report opportunities with a payback greater than four years. Reporting this data is voluntary.

Table 2.1 – Assessment details

It is compulsory to complete a separate table for each entity* that has been assessed

Name of entity

Buildings and Facilities



Total energy use in the last financial year

82,336

GJ

Total percentage of energy use assessed when assessments were undertaken

44

%

Description of the way in which the entity carried out its assessment:

Level 2 Energy Audits

Council commissioned level 2 energy audits of seven of its top energy-consuming sites in the Buildings and Facilities group. These audits were conducted in accordance with AS/NZS 3598:2000 and analysed energy bills, interval data and layout drawings, and involved a site inspection of each premises. The audits were conducted at Toowong Bus Workshop, Toowong Bus Depot, Virgina Bus Depot, Brisbane Powerhouse, Chermside Library, Hibiscus Sports Complex, and one of Council’s data centres.

The recommendations from these audits were grouped into short term payback (less than 4 years), medium term payback (4-8 years), and long term payback (more than 8 years). Budget bids can now be proposed by operational areas to secure funds to progress projects.

Eleanor Schonell Bridge

The Eleanor Schonell bridge was completed in 2006. The original footpath lighting consisted of 55 metal halide lights (70 Watts each) set into the footpath and directed upwards. While these initially worked well, over time the fittings began filling with water after rainfall. This led first to failures of individual lights and then to failures of series of lights. Investigations and repairs proved costly, partly because the lights had to be accessed via the gantry under the bridge.

At the end of 2010, it was decided not to spend more on maintaining the lights but to instead undertake an upgrade. At this point Council compared available technologies, and their respective energy and maintenance costs. The most cost-effective solution was LED lighting. The retrofit consisted of removing the 55 metal halide uplights and replacing them with a continuous strip of small LED lights (1.6 Watts each) along the footpath. There are 980 lights in total. The retrofit resulted in avoided annual energy use of more than 13,000kWh (48GJ).

The total annual value of avoided costs is $39,000, producing a 3.8 year payback on an initial investment of $147,000.



Story Bridge

The Story Bridge retrofit consisted of two projects: a retrofit of street level lighting (road way and foot path) and the decorative lighting that illuminates the bridge handrail, archway and columns.

Before the retrofit, roadway lighting consisted of 38 high pressure sodium lights (150 Watts each). There was no separate footpath lighting. Regular road closures were required to replace globes on the roadway lighting, and footpath illumination levels were inadequate.

Decorative lighting consisted of 270 high pressure sodium lights (50 Watts each) and 214 high pressure sodium lights (70 Watts each) along the handrail and archway, and four metal halide lights (2000 Watts each) and eight metal halide lights at the column bases (1000 Watts each). The cabling and electrical systems supporting these systems were ageing and required replacement. One of the bridge columns was not illuminated. Most significantly, colour changes to the handrail and archway lighting (required for special events) were being completed manually (by adhering cellophane to light fittings).

This led to consideration of retrofit projects. The primary motivation of both projects was to reduce maintenance costs, address the need to upgrade aging cabling on the bridge, and to provide improved lighting.

At this point Council compared available technologies, and their respective energy and maintenance costs. The most cost-effective solution was LED lighting. The roadway lights were replaced with 38 LEDs (188 Watts each). On the footpath, 38 new LEDs (52 Watts each) were installed. Decorative lighting along the handrail and cord was replaced with 446 LEDs (40 Watts each), and column lighting was replaced with 56 LEDs (165 Watts each). Aged cabling and electrical infrastructure was also replaced. The new lighting has a substantially longer lifespan, and colour changes, dimming and other visual effects can be programmed and controlled through a computer system.


The retrofit resulted in avoided annual energy use of 95,500kWh (340GJ). The total annual value of avoided costs is $148,000, producing a 3.1 year payback on an initial investment of $460,000.


* Entity is group member, business unit, or key activity. Please note that, for individual sites that use more than 0.5 PJ of energy, all energy use must be assessed (less a small proportion for
non-integral energy use).

Table 2.2 - Energy efficiency opportunities identified in the assessment


It is compulsory to complete a separate table for each entity that has been assessed




Status of opportunities identified to an accuracy of better than or equal to ±30%


Total

number of opportunities

Estimated energy savings per annum by payback period (GJ)

Total estimated energy savings per annum (GJ)

0–2 years

2–4 years

> 4 years

No. of opps


GJ

No. of opps

GJ

No. of opps

GJ

Business Response


Implemented

2

0

0

2

388

0

0

388

Implementation commenced

0

0

0

0

0

0

0

0

To be implemented

0

0

0

0

0

0

0

0


Under investigation

20

2

472

0

0

18

5138

5610

Not to be implemented

0

0

0

0

0

0

0

0

Outcomes of Assessment

Total identified

22

2

472

2

388

18

5138

5998

Please note that corporate groups are not required to report opportunities with a payback greater than four years. Reporting this data is voluntary.

Table 2.3 - Details of significant opportunities identified in the assessment


Corporate groups are required to provide at least three examples of significant opportunities for improving the energy efficiency of the group that have been identified in assessments.

Description of opportunity No. 1

Voluntary Information

Retrofit 25,000 street lights (predominantly mercury vapour 50 Watt) with compact fluorescent 32 Watt and 2x14 Watt linear fluorescent lights.

Equipment type

Compact Fluorescent

Business response

Implementation commenced

Energy saved (GJ)

9,273

Greenhouse gas abated (CO2-e)

2,112 t

$ saved

$500,000 p.a

Payback period

17.7 years

Description of opportunity No. 2


Voluntary Information

Retrofit 55 metal halide lights (70 Watts each) with a continuous strip of 980 LED lights (1.6 Watts each).

Retrofit resulted in avoided annual energy use of more than 13,000kWh (48GJ), and total avoided annual costs of $39,000.



Equipment type

LED lights

Business response

Implemented

Energy saved (GJ)

48

Greenhouse gas abated (CO2-e)

10.9 t (before GreenPower)

$ saved

$39,000 p.a.

Payback period

3.8 years



Description of opportunity No. 3

Voluntary Information

Remove 38 high pressure sodium (HPS) lights (150 Watts each), 270 HPS lights (50 Watts each), 214 HPS lights (70 Watts each), four metal halide lights (2000 Watts each) and eight metal halide lights (1000 Watts each). Replace with 38 LEDs (188 Watts each), 38 LEDs (52 Watts each), 446 LEDs (40 Watts each), and 56 LEDs (165 Watts each).

Retrofit resulted in avoided annual energy use of 95,500kWh (340GJ), and total avoided annual costs of $148,000.


Equipment type

LED lights

Business response

Implemented

Energy saved (GJ)

340

Greenhouse gas abated (CO2-e)

77.5 t (before GreenPower)

$ saved

$148,000 p.a.

Payback period

3.1 years

Please note that the Description of the opportunity above should include information on the specific nature and type of opportunity as well as information on the type of equipment and/or process involved.



CA13/801591






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