For many years Aquamax has assisted Contact Energy and other geothermal operators with their scheduled turbine maintenance. Steam from natural geothermal fields is heavy in minerals, particularly silica which over time form strong deposits on turbine rotating and stationary blading. These deposits degrade the performance of the turbine and must be removed periodically. For over 15 years we have assisted Contact Energy descaling their turbines getting involved with several projects every year. We utilise our ultra-high pressure (40,000 psi), low flow rate equipment which has the cutting power to remove the silica build-up but also allows operators safe flexibility of movement to ensure high productivity and access to detailed areas.


Contact is New Zealand’s largest producer of geothermal electricity operating five geothermal power stations located in central North Island.

Charley Beagle is responsible for maintaining a wide range of highly specialised plant, turbines, pipeline and general infrastructure at Contact Energy.

A regular challenge is conducting annual shuts to perform essential maintenance on generating equipment. Every hour of downtime comes with significant opportunity cost so planning and reliability is critical.

Health and safety management is of utmost importance. In addition to observing good practice, Aquamax operators are keen to work with plant supervisors to initiate improvements.

Customer Outcomes

  • All deposits removed and contained
  • Much of the work conducted indoors and in-situ
  • Plant downtime minimised
  • Superior process without damage to equipmente
  • Reliable, professional and safety conscious team
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  • "Aquamax have done an outstanding job for us. Our panel beater is delighted with the start point he has to work from. I’d have no hesitation in recommending Aquamax to other motorsport enthusiasts."
    Brian Stokes
    Rally Driver
  • "The Aquamax team were a pleasure to work with and have delivered a highly controlled hydrodemolition process."
    Rod Gray, Southern Region Manger
    Concrete Solutions™ Ltd
  • "We’ve used Aquamax for 15 years on our annual shuts. I continue to be impressed with their project planning, health and safety management and the quality work delivered for us."
    Charley Beagle, Asset Manager
    Contact Energy
  • "We were faced with a very challenging project. I was very impressed with the Aquamax team, project management, and quality of the job."
    Craig Ross, Managing Director
    NSB Protective Coatings
  • "After many hours of frustration approaching sandblasters to strip my 26 ft alloy catamaran, Aquamax came in and provided a top notch service. Following my call, I had a price same day and then the team came in as promised, worked hard and completed the whole project in a day. The resulting surface finish was excellent enabling me to press on quickly with the rest of the project. Highly recommended.”
    Jason Roxburgh, Director
    Enhance Roof Coatings Ltd
  • "I have used Aquamax numerous times and nothing is an issue. Very professional and easy to deal with"
    Jon Price, Road Marking Manager
  • "Aquamax has provided a very efficient and accurate result to any work requests"
    Paul Baird, Road Marking Supervisor