Contact Energy

Contact Energy
Taupo - Wairakei
5 Months
Te Mihi

Contact Energy is one of New Zealand’s leading generators of geothermal electricity, generating around five per cent of New Zealand’s total energy from its geothermal operations in the Taupo region.

As New Zealand’s demand for energy continues to grow and concern about climate change increases, new sources of renewable energy are needed.

Geothermal energy uses the heat from deep inside the earth to generate electricity – it’s renewable, capable of generating large amounts of electricity and, unlike wind and hydro generation it does not depend on the weather.

Electricity produced from geothermal energy is always available, providing a vital role in a secure power supply.

The Te Mihi project is a $750 million programme of investments that safely and sustainably expands the use of the Wairakei steamfield. It includes the construction of a new power station, a bioreactor to remove hydrogen sulphide from cooling water discharged to the river, life extension work at the Wairakei geothermal power station and the drilling of production and reinjection wells.

Our brief was to put into service two recently drilled production wells designated WK123 and WK124 and install a separation system to supply steam and geothermal fluid to the Wairakei Power Station. This was a major upgrade of services to the Wairakei station that was originally commissioned in 1958.

Contact Energy - Wairakei


Cad welding and bonding of all equipment foundation pads
Design and installation of two lightning protection system including air receiver and 3 point ground earth
Installation of cable supports and ladder rack with peaked lids
Installation of Steel Wire Armoured (SWA) cabling to motorized actuator valves
Profibus ring communication network from PLC to all actuator valves for positional and alarm event monitoring
Installation of SWA cabling to all instruments and digital devices
Supply and installation of pressure, temperature, orifice plate flow transmitters, vortex flow transmitters, ultrasonic flow transmitters, radar level working as a flow transmitters
Fabrication of all instrument piping using Swagelok fittings
PLC documentation, site specific core wire identification and cable labeling systems
Site wiring of all actuators, temperature controls, level controls, pressure controls, flow controls
Extensive bonding system of all cable racks, instrument stands, foundation supports
Surface bonding of insulated cladding around steam pipes
Documented pre-testing of all cabling and instrumentation
Upgrade of existing two switchboards
Software testing of all actuator and instrumentation
Commissioning, calibrating, operator training and as built documentation

Request Support

If you require support please call our freephone number 0800 243 243 or fill out the support request form below.

(For urgent support you may wish to call us on 0800 243 243)

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