A reliable energy supply underpins the safety, comforts and convenience of 21st century living.

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2 2 EXPERTS Network Services Transmission Infrastructure

3 3 ENERGY Systems and Services TECHNOLOGY SOLUTIONS A reliable energy supply underpins the safety, comforts and convenience of 21st century living. As consumption trends shift and critical infrastructure resilience becomes more vital, asset owners are faced with the growing challenge of delivering a world-class energy supply that accommodates future demand at an affordable cost. For a range of businesses, this has led to a need for more resilient and reliable infrastructure solutions that ensure high levels of network performance and availability. Specialists experienced in revitalising existing mains supply, designing, constructing and maintaining critical infrastructure, and offering alternative energy solutions play a pivotal role in helping to deliver energy resilience for network owners and end users. Thiess understands that end-user customer service and satisfaction are the real measure of performance. For more than 20 years, we have been a trusted partner to some of Australia s largest energy providers and users. Our acquisition of Silcar positions us as one of the nation s leading services companies, strengthening our energy, communications, asset management, operations and maintenance capabilities. From city centres to regional and remote communities, we are committed to working with utility, industrial, mining, rail, commercial and communications clients to deliver sustainable energy solutions. We are a reliable and trusted partner because we: Execute design, construction and maintenance regimes based on detailed site assessment, stakeholder consultation, and planning and scheduling of resources, plant and equipment Deliver turnkey solutions that enhance critical infrastructure resilience and improve the reliability of networks Leverage new technologies that provide clients with alternative energy solutions and deliver more effective environmental outcomes Invest in partnerships with world-leading original equipment manufacturers to drive innovation and performance.

4 4 network services Cost, continuity and quality of supply are paramount for energy networks and at the forefront of customer needs. As a national provider of electricity and gas distribution services, we understand and appreciate the importance of helping our clients deliver these outcomes for their customers. Gas Services Thiess services business has provided a range of gas construction services for distribution networks across Australia including APA Group, SP AusNet, Multinet Gas Distribution and Envestra. Adapting to the nature and location of the work, our civil and pit-building crews can draw on a range of installation techniques such as traditional open-cut or directional drilling. Directional drilling is especially valuable in locations where surface level disturbance and traffic disruption need to be kept to a minimum. We are experienced in all facets of operations and maintenance activities including: Constructing new mains up to 200mm in steel and up to 180mm in polyethylene Constructing domestic and industrial services and meter assemblies Providing mains renewal services that include upgrading gas mains from low and medium pressure to high pressure in both steel and polyethylene Project management and customer service management. (Right) Thiess services business has delivered a number of projects for APA Group across metropolitan and regional Victoria, including stages 5 and 6 at Rye on Mornington Peninsula.

5 5 Overhead Electricity We offer a comprehensive range of maintenance and capital works services for overhead line distribution networks. Our linesmen work on live low voltage and high voltage lines up to 33kV using glove and barrier techniques, and 66kV using stick methods where required. In circumstances where our crews are required to work in de-energised environments, we hold the appropriate licences to carry out low voltage and high voltage switching and issue permits. (Left) As a Distribution Delivery Partner to Western Power since 2005, we undertake maintenance and capital works services throughout metropolitan Perth and the regional centres of Bunbury and Geraldton. Our capital works and maintenance services for clients such as Ergon Energy, Energex and Western Power include: Reconductoring, including replacement and upgrade to aerial bundled cable (ABC) Pole, cross arm and tie replacements Pole top switch maintenance and replacement Earthing, connections and joints maintenance on distribution network substations (415V 33kV) Transformer upgrades Recloser installations New feeder and overbuild construction Customer-funded works, ranging from new feeder lines for mine sites, to capacity upgrades for retail, industrial and commercial businesses. Underground Electricity Our specialist underground crews bring their expertise to the construction and installation of permanent and temporary underground electricity supply. Our cable layers and jointers ensure transformers and switchgear, cable hauling and jointing, and sheath and continuity testing, are installed and undertaken to exacting standards and comply with all statutory and network owner requirements. (Left) The Airport Link team relocated numerous overhead lines and underground electricity and gas services. In the three-and-a-half year construction period, the team installed 53.6 kilometres of conduit, 10 kilometres of high voltage cable, 7.3 kilometres of low voltage cable and 75 pits. We provide high and low voltage underground electricity supply projects from North Queensland to Victoria and Western Australia. We draw on our civil capabilities in directional drilling when required to accommodate road and rail crossings or minimise surface disturbance. During the construction of Brisbane s $4.8 billion Airport Link project, we undertook all of the temporary electrical works required to energise this project s multiple, heavy equipment-intensive work sites.

6 6 TRANSMISSION infrastructure Thiess services business leverages the engineering and construction capabilities of the broader group to deliver substations, transmission lines, underground cable projects and high voltage services. High Voltage Services As one of Australia s leading construction, mining and services contractors, the Thiess group has the expertise and experience to deliver end-to-end project solutions. Thiess services business provides specialist brownfield civil, water and electricity infrastructure construction and maintenance services. On site we draw on a team of specialists across civil, structural, electrical installation and protection testing works. Our teams are highly mobile and experienced in working in challenging locations. They construct to precise specifications while managing schedules, logistics and quality assurance processes. They also have access to an extensive range of specialist plant including elevated platforms, cranes and specialist transmission lines stringing plant that complies with strict site specifications. For major construction projects including lattice tower transmission lines, underground transmission cable projects and terminal/grid substations, we draw on the engineering, construction, tunnelling and project management expertise of the Thiess construction business. For high voltage operations and maintenance, we provide long-term management strategies, manage asset information, provide the works scheduling and deliver the field works under the Asset Management PAS-55 framework to achieve client reliability expectations. Our Asset Management System modules are designed with flexibility to integrate with client practices and systems. Our energy services for clients include: Transmission and sub transmission lines and cables to new mining operations Transmission high voltage substation construction and upgrades Relocations, retraction and maintenance of mine high voltage lines, cables and substations Railway traction substations and infrastructure high voltage services Asset management of high voltage networks.

7 7 (Below) AquaSure contracted Thiess Degrémont to design and construct the $3.5 billion Victorian Desalination Project. Part of the work involved the design and construction of two electrical substations to maintain a steady and reliable flow of power to the desalination plant, smoothing out any surges or drops in voltage. The team also built a third GIS 220/22 kv substation to power the desalination plant. Substations and Transmission Lines Delivering high voltage substations and transmission line projects requires a multi-discipline capability and the organisational ability to assemble and project manage a team of designers, equipment suppliers, planners, field engineers, skilled construction and electrical workers, and linesmen. We team with specialist design partners to deliver underground cable, substation and transmission line projects at voltages up to 330kV. Our partners are selected on the basis of their niche skills and knowledge in particular sector areas. To ensure optimal results, we assign a design manager with construction experience to lead and challenge design concepts at the outset. Our team can work with clients under a traditional free issue project material approach or offer alternative product supply and technology. We have key partnering arrangements in place with specific overseas manufacturers that give us access to quality transmission line structures, conductors and componentry, high voltage cables, substation transformers, switchgear and secondary systems. We leverage the engineering and construction capabilities of the Thiess group.

8 8 SYSTEMS AND SERVICES The infrastructure we build and manage is essential to our clients and the ongoing operation of their businesses. We offer a range of systems and services that enhance productivity, improve reliability and maximise the resilience of client infrastructure. 1,640 commercial solar systems 3,250 large power systems (>25kW) Critical Infrastructure We understand the importance of equipment availability to businesses and consumers. Our team provides a range of solutions that can manage fluctuating loads and outages, boost mains power, deliver base load for sites not connected to the grid, and manage the thermal environment of equipment. Our services include the design, procurement, installation and maintenance of: AC and DC Uninterrupted Power Supply (UPS) Energy storage systems» Standby generation plant HVAC, monitoring and racking Equipment huts and shelters.» Power quality and earthing systems 700 ups and inverter systems 200 STANDBY & PRIME POWER GENERATING SYSTEMS Thiess installed two 800kW generators rated at 45dBA in N+1 configuration at a Telstra communications network facility in Victoria Park, Western Australia. The generators replaced existing generation equipment, increasing load carrying capacity and, in the process, accommodating for future growth.

9 9 High Voltage Technical Services Thiess highly-skilled technical team provides a wide range of testing, commissioning and high voltage (HV) technical services for transmission and distribution networks Australia-wide. Our projects have ranged from substation commissioning, maintenance of transmission, distribution and process plant electrical infrastructure through to high voltage testing of transformers, generators, motors and switchboards. We efficiently and accurately establish the condition of HV plant using specialised condition monitoring and diagnostic equipment such as Doble and Omicorn secondary injection test equipment. Our services include: Project management and commissioning of protection and control schemes in new and existing substations Factory Acceptance Testing (FAT) of electrical switchboards Site Acceptance Testing (SAT) of electrical switchboards Maintenance of existing protection schemes Development of data setting files for numerical protection relays Test plans, relay setting and relay logic files Simulation testing of SCADA systems to ensure correct functions integrity Development of quality Inspection Test Plans (ITPs). Product Analysis, Testing and Reporting Thiess provides a comprehensive testing capability to clients and regularly reviews new products and technologies to determine their suitability for use in the Australian market and within client networks. This testing focuses on system design, functionality and standards compliance as well as comparative measures of whole-of-life cost. These outputs provide clients with valuable information that supports their product selection processes. Site Audits Thiess can provide site audits to review the operation of critical infrastructure and provide recommendations on improving efficiency and reliability. We can also provide recommendations on energy savings that can be achieved from emerging designs and technologies.

10 10 TECHNOLOGY SOLUTIONS Increasing electricity prices, the need for reliable energy supply and the push for reduced greenhouse gas emissions are driving the commercial demand for alternative energy solutions. Our multi-layered approach to evaluating emerging technologies and developing smart network solutions is delivering lower costs, a variety of delivery choices and a sustainable, lower carbon future. Smart Services Trialling technology, sharing expertise and overcoming obstacles to smart network technology is contributing to the delivery of a more efficient energy supply. Areas in which we are assisting regulated and non-regulated energy clients with smart network development include: Strategy and design Technologies and engineering services Field installation of technologies to facilitate smart network operations Intelligent network communication. We also have significant expertise in the development of network demand management strategies and their practical roll-out in the community. Our smart services in this area include: Assisting with regulatory test measurement and compliance under the National Electricity Rules Assessing demand management potential with end-user customers in targeted demand areas Undertaking end-user customer consultation and management. As energy and communications networks converge, we are uniquely positioned to help clients: Develop solutions for data acquisition over power networks Leverage existing information technology and communications infrastructure Ultimately develop integrated utility models.

11 11 Alternative Energy Solutions Thiess offers a range of highly-efficient renewable energy products and solutions. Our site designs optimise power, environmental controls and efficiency, and are customised to meet the specific needs of our clients. We recommend systems and products based on local conditions and the environment. This work involves product evaluations, testing, installation and monitoring to ensure fit-for-purpose application. We provide engineering, procurement and construction services including: Commercial solar solutions: on and off-grid solar generation solutions ranging from 100W remote power sites through to 100MW (and larger) solar farms Cogeneration and tri-generation plants: specialising in plants ranging from kW, we offer financial and energy analysis, planning, equipment selection, installation, commissioning and operation and maintenance service agreements Gas generators and turbines: gas-powered generation plant to replace diesel generators and reduce demand for electricity sourced from coal-fired power stations Hydrogen and methanol fuel cells: as an alternative fuel source, hydrogen and methanol fuel cells can be used to replace conventional gas generation. These systems provide greater energy efficiency, are silent and have almost no emissions, the only by-product being water Wind generation: the provision of small scale wind solutions to boost solar and diesel/gas generation at remote sites through to the construction of large wind turbines.

12 12 In Focus Mining region boost We constructed and energised a new 132kV tie line between the existing substation at Isaac Plains and the new substation at Broadlea in Central Queensland for Ergon Energy. Initially insulated at 66kV, the line is approximately 4.3 kilometres in length and supported by 35 pole structures varying in height from 12.5 to 38 metres. The scope of work also included installing new 132kV line entries into the Broadlea and existing Moranbah substations; erecting new poles for the 55-metre landing spans at Broadlea substation for the Moorvale and Carborough 66kV feeders; and stringing about 14 kilometres of optical ground wire in an underslung arrangement. At locations with inadequate clearance, the team installed the fibre optic connection underneath a Queensland Rail crossing using trenching and horizontal boring techniques. Proven gas capability Thiess services business entered the natural gas distribution sector in 2000 when we secured an operations and maintenance contract for the south and east areas of Melbourne with Multinet Gas Distribution. We were responsible for more than 8,500 kilometres of distribution pipe, 120 kilometres of transmission pipelines and more than 220 pressure regulators feeding more than 550,000 domestic, commercial and industrial customers. The contract services included first and emergency response, mains and services maintenance and repair, systems operations, cathodic protection, pipeline patrol and associated works to ensure the gas distribution network operated in a safe and reliable manner. Our business grew when we acquired Champ Constructions, a medium-sized gas construction contractor predominantly servicing the south and south-eastern regions of Melbourne and the Mornington Peninsula. We currently provide mains and services construction, and renewal services, for the three Victorian networks owned by SP AusNet, Multinet Gas Distribution and Envestra. Well-established relationships with global energy equipment providers enable us to realise new value and minimise risk.

13 13 A Healthy Injection As part of the $756 million redevelopment project at Sydney s Royal North Shore Hospital, Thiess construction and services businesses installed two 2MW cogeneration facilities to meet the base load energy demand of the new hospital, in addition to two 2MW diesel generators for emergency purposes. Heat recovered from the cogeneration facilities is being used to provide domestic hot water and heating for the hospital. Fully operational, Thiess services business is currently responsible for the operations and maintenance of the cogeneration facilities for a 28-year period. Thiess scope included: Feasibility studies during tender stage to validate the viability of the cogeneration facility Financial modelling to determine optimum plant size and pay back periods, and operations and maintenance costings Preparation of detailed specification Tendering and tender assessment Management of construction contracts. Methanol fuels Telstra backup supply In an Australian first, Thiess tested and installed a methanol reforming fuel cell at Telstra s Dixons Creek site in Victoria, providing a reliable, environmentally-friendly, emergency backup power generation solution. Frequent outages of the mains power supply to the site were beginning to affect service quality. Telstra contracted Thiess to upgrade power redundancy at the site and investigate a suitable alternative to the diesel generator being used for emergency backup. The methanol fuel cell s inbuilt reformer converts methanol to hydrogen when the system is operating, reducing the volume of highly combustible hydrogen on site. Working with the client, Thiess managed product testing, change management and implementation of the alternative fuel cell within Telstra s network.

14 14 In Focus Infrastructure safeguards pipeline Our team has designed and constructed critical energy infrastructure and equipment shelters to support the Telfer Gas Pipeline in Western Australia s Great Sandy Desert. The site s remote location presented key logistical challenges associated with deploying, testing and commissioning the equipment buildings. The installations have helped safeguard the ongoing viability and reliability of the sites through the application of power and environmental control technologies, including solar generation, DC fans, high efficiency rectifiers and gas generators. Turnkey solution improves rail safety The design, supply and installation of UPS at multiple sites has provided the Public Transport Authority of Western Australia with a high-availability solution to support signalling equipment and station services during mains outages. Thiess provided a turnkey solution for the client, which included equipment housing, power and cooling requirements. The solution improves the safety of the rail operations, ensuring critical signal equipment remains operational during periods when mains power is not available. Hybrid system speeds up communication The development of a solar/gas-powered hybrid system using a variable speed DC generator is supporting communications links to oil rigs off the north-west coast of Western Australia. Located in the Cape Range National Park more than 1,000 kilometres north of Perth, the use of solar panels has helped reduce emissions and minimise environmental impacts. The gas generators provide the base load during periods when the panels are not generating power. Thiess has gone on to install the solar/gas hybrid system at a number of sites around the country including Minilya in Western Australia, Wallaroo in South Australia and Homestead in Central Queensland.

15 15 A history of transmission and distribution testing and commissioning YEAR CLIENT PROJECT DESCRIPTION 2013 SP Ausnet 220kV / 66kV Transformer VRR upgrade project Morwell Terminal Station VIC 2013 UGL/SP Ausnet 220kV control upgrade project Yallourn PS Terminal Station VIC 2013 UGL/SP Ausnet 220kV CT Replacement Project West Melbourne Terminal Station VIC SP Ausnet 66kV circuit breaker replacement project Morwell Terminal Station VIC Lend Lease/Origin Mortlake Power Station 500kV Switchyard VIC Testing services for all works associated with the pre-commissioning and commissioning of the new VRR scheme Testing services for new control relays and RTUs associated with 20 x 220kV circuit breakers, as well as upgrades to metering and high speed monitoring within the terminal station Replacement of CTs for approximately 10 circuits, all of which had to be completed during tight outages due to the criticality of the terminal station within the network Successfully replaced all CTs without any unexpected outages or major issues Assisted UGL with similar projects at Ringwood and Glen Rowan Terminal Stations Testing services for all works associated with the pre-commissioning and commissioning of eight 66kV circuit breakers and associated CTs, as well as six new 66kV VTs Testing and commissioning services for the 500kV switchgear and associated protection for a new 500kV switchyard including factory testing of the protection scheme Monadelphous/ Power Water Corp Archer Zone Substation NT Testing included all 11kV and 66kV switchgear and transformers and associated protection and control Siemens/Transend Package B Zone Substation TAS Testing services from factory testing through to commissioning for the Package B project, which consisted of 4 major zone substation developments (110kV/22kV or 110kV/11kV) across Tasmania Energex Distribution Network QLD Provided contract labour hire for testers and tradesman for pre-commissioning and installation works on various projects across the network Powercor Distribution Network VIC Provided contract labour hire for testers and tradesman for project and maintenance activities

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