Ngati Tuwharetoa Geothermal Assets is a wholesale steam and brine supply business currently supplying a mix of industrial customers in Kawerau (Kawerau industrial site pictured below).  To learn more visit our Geothermal business website:

Geothermal steam is the ideal process heat as it is:

  • Reliable, runs 24 by 7 all year
  • Produced locally, not reliant on long distance pipelines that can break down
  • Renewable, the heat source from the earth sustains heating the fluid in perpetuity
  • Low carbon, the CO2 emissions are approx. 25% of gas raised steam equivalent
  • Commercially attractive, we have a network of assets and existing customers ensuring that all customers gain benefit from our scale.

Our steam is currently used in the production of:

  • Dried timber, 2 international scale sawmills use geothermal for their timber drying
  • Kraft pulp, our steam is used along with biofuel in the production of kraft pulp in Kawerau
  • Tissue products, tissues, handy towels and toilet paper, dried using clean food grade steam created by heating clean water with geothermal steam
  • Dairy milk products
  • Electricity production.‚Äč 

If you would like to view our latest community report click the following link here.

Above: Putauaki


Above: Kawerau Industrial Site

We hold environmental permits (consents) to double our production from the Kawerau field.  We are looking for new customers.  We can provide a complete steam and brine supply service including:

  • Geothermal steam supply to the customer's door, from 5 to 15 bar
  • Geothermal brine supply to the customer's door, from 100 to 150 degrees C
  • Clean steam supply to the customers door, from 5 to 15 bar (Clean steam plant pictured below)
  • Condensate collection and re-injection
  • Brine re-injection

Using geothermal steam and brine for process heat and electricity generation is a permitted activity within the Kawerau District.  Kawerau is an ideal location for industrial processes due to:

  • The presence of existing large industrial businesses which has created strong support services, e.g heavy engineering, spares supplies,
  • Located on a rail line, only 100km from New Zealand’s largest deep water port (Tauranga)
  • Located on the off highway forestry road network that connects to over 200,000 hectares of sustainably managed plantation forest.
  • Available flat land zoned for Industrial use
  • Many industrial activities already deemed to be permitted activities  


Above: Clean Steam Plant