Underground Power Cable Laying Installation

Cape has successfully completed underground power cable laying installation projects in locations ranging from Perth’s CBD to remote mine sites and wind farms.

Western Power, Alcoa and BHP are just some of the companies that have used Cape on their power projects.

For Western Power, Cape completed the excavation, installation and backfilling works for two 132kV underground cable circuits. This is one of several completed projects in Perth’s CBD, which also included the installation of power to the new BHP building.

In South Australia, Cape successfully installed 65 kilometres of high voltage power and fibre optic cabling, connecting 55 wind turbines. Our unique ploughing installation method contributed to minimal disturbance to the surrounding livestock and natural vegetation.

Cape improved the reliability and capacity of the electrical supply to Rio Tinto’s Parabadoo asset. Our team supplied, installed and commissioned the high and low voltage power infrastructure to BHP assets at Port Hedland and Finucane Island. At Mumbida Wind Farm near Geraldton, Cape will complete the trenching, cable installation, backfilling and HV works that connect 22 wind turbines.

Cape has been supporting the Western Power UPP program for over 21 years since its inception 1996 and completed over 25 projects to date. This includes the installation of an estimated 7,000 streetlights, over 15,000 home connections and the installation of over 840 kilometres of underground power cable.

When it comes to your power projects, Cape will make sure you are connected.

View power projects

Rail Capacity Enhancement

Communications & Power Project: Rio Tinto & Calibre (Pilbara WA) The Rail Capacity Enhancement projects were part of Rio Tinto Iron Ore’s plan to expand its iron ore export capacity. Over eighteen months, Cape worked with the principal to upgrade the communications & signalling infrastructure along Rio Tinto’s existing rail network near Cape Lambert in […]

Parabadoo Mine Supply Upgrade

Power & Communications Project: Rio Tinto (Paraburdoo WA) The overall scope of works was to improve the capacity and reliability of the electrical supply to Paraburdoo assets, achieved through the replacement of the existing 11kV reticulation with a 33kV system. Scope also included the replacement of existing 11kV transformers with 33kV units of equal or […]

Floreat Underground Power Program

Power Project: Western Power (Floreat WA) In 2018, Cape was awarded two packages of work, as part of the Town of Cambridge’s $40 million underground power program – Floreat East and Floreat West, encompassing 1781 homes, 57km of horizontal directional drilling, removal of 965 power poles and the installation of 597 street lights. Cape has been supporting Western […]

Mumbida Wind Farm

Power Project: Leighton Contractors (Geraldton WA) Located approximately 40km south-east of Geraldton, the project included trenching, cable installation, backfilling and HV termination works for the connection of 22 wind turbines.

North Brown Hill Wind Farm

Power Project: (North Brown Hill SA) Cape successfully completed installation works at a wind farm located in North Brown Hill, South Australia using the company’s unique ploughing installation method. Our team installed 65km of high voltage power and fibre optic cabling, ultimately connecting 55 wind turbines. Minimal disturbance was caused to the surrounding livestock and natural vegetation, […]

132kV Interconnection Clarkson – PTA Nowergup Substations

Power Project: Western Power (Claremont WA) The scope of works included the installation of one 132 kV cable circuit and two communication ducts over a route distance of approximately 850 metres. Specifically: • Cable Installation – Directional Drilling and Open Trenching: 2 x 132 kV single core 400 mm2 copper conductor, XLPE insulated, copper tape and […]

Perth City Square Upgrade

Power Project: Western Power (Perth WA) This project consisted of excavation, installation and backfilling works of two 132kV underground cable circuits in flat formation from the cable termination structures located inside the Milligan Street Substation to the existing underground cable joints in the Northern side of junction between Milligan Street and Murray Street. Installed alongside […]

Wanneroo Road and Joondalup Drive Relocation

Power Project: Western Power (Sinagra WA) Cape has been engaged to install two 132kV circuits of underground transmission line as well as supply and construct foundations for transition poles as part of the Main Roads WA overpass bridge construction at the intersection of Joondalup Drive and Wanneroo Road.

132kV Feeder Joel Terrace

Power Project: Western Power (Perth WA) Cape undertook the task of installing three new feeder cables in existing conduits and extend the existing spare conduits by approximately 20 metres under the railway reserve between East Parade and Summer Street, East Perth.

PTA Airport Link Traction Power Supply Project

Power Project: Western Power (Maida Vale WA) In 2018, Cape secured a contract to energise the Public Transport Authority’s new Maida Vale Substation, as part of the Forrestfield Airport Link Project. Our team is installing approximately 3.5km of three phase underground cable, communications ducts and associated pits to create a new transmission line from the existing 132kV […]

Calleya 400HV Cable Installation

Power Project: Stocklands (Harrisdale WA) This project involved the construction and installation of: • Approximately 6.2km of 1 x 400mm2 HV feeder cable & conduit from Southern River Zone Substation to Pole termination of Warton road • 400mm2 HV cable joint bay • Cable joints to the feeder cable • HV straight joints • Sheath testing of […]

CBD Works – 2 Stages

Power Project: Western Power (Perth WA) Stage 1 included the installation of eight no. 150 diameter A15:B15 carrying 11kv feeder cable through the Perth city centre to supply the new BHP building. The cables were laid within eight conduits beneath the road pavement in a trench approximately 1.3m width and 1.2m deep. This project required close liaison […]

Claremont WTE-CTE 81 Relocation

Power Project: Western Power (Claremont WA) The scope of works for this project included: A section of the existing WT-CTE 81 overhead 132kV transmission line was moved underground and replaced between existing pole 49 (Eastern side of the alignment) and pole 57 (Western side of the alignment) Installation of one new cable transition structure, transitioning […]

Port Hedland Inner Harbour Project

Power Project: BHP Billiton & Calibre (Port Hedland WA) Located in the Pilbara region, Cape was engaged to supply, install and commission high voltage and low voltage power infrastructure to BHP Billiton assets in and around Port Hedland and Finucane Island. The scope included: 100km of LV cable 40km of HV cable 7 x switchgears […]

Jimblebar – RGP6

Power Project: BHP Billiton & Theiss (Newman WA) The project was located approximately 39km east of Newman and involved detailed earthworks, trenching, bedding, and backfilling of underground services as well as the installation of electrical and communications infrastructure. The scope included: 206,000 bcm of detailed earthworks 41km of Raw Water and Portable Water Pipelines 4km Oily […]

The Bluff Wind Farm

Power Project: ETSA (Jamestown SA) The installation at the Bluff Wind Farm situated in Jamestown, South Australia comprised 15,500mtrs of HV cable, 28,000mtrs fibre optic cable and 25,500mtrs earth wire connecting 25 turbines putting our EcoPlough with its unique ploughing method to work. This project was environmentally friendly with minimal disturbance to the vegetation and […]

Great Northern Highway Relocation

Power Project: Western Power (Muchea WA) Cape has been engaged to relocate distribution assets along Great Northern Highway to facilitate the completion of the Main Roads WA Great Northern Highway – Muchea to Wubin (Stage 2) Project. The scope includes approximately: 2.5km of underground cable, 1.6km of conduit, 18km of conductor and 116 new wooden poles […]

South Flank Piping & Electrical Package

Communications & Power Project: NRW (Newman WA) BHP’s South Flank deposit is located approximately 130 km by road north-west of the town of Newman, and approximately 8 km to the south of the Companys existing Mining Area C operation. Cape have been engaged by NRW to deliver piping and electrical packages as part of NRW’s […]