General Information



Our Business Locations

With the WPI Corporate Office situated in Auckland, New Zealand, the main business production bases are:

  • The Karioi Pulpmill at Karioi, Ohakune, high on the Central Plateau of the North Island at the base of Mount Ruapehu.
  • The Tangiwai Sawmill at Tangiwai, Ohakune, three kilometres from the Pulpmill.

(Click on map to see a larger image)



WPI Pulp and Timber products are exported from Napier Port

Click HERE to view a time lapse video of WPI products being loaded at the port (links to Youtube video).

Forestry Stewardship Council® Certification (FSC®)

FSC is an international, non-profit association who is responsible for ensuring that forestry resources and associated lands are managed in a way that meets the social, economic, ecological, cultural and spiritual needs of present and future generations.

As an FSC certified company, Earnslaw One Ltd is actively involved in the use of environmentally friendly forestry management practices within the business. FSC certification means Earnslaw One's use of its forests has been inspected and that they do not illegally harvest timber or use genetically modified organisms.

WPI pulp and wood processing units have all been assessed and certified as meeting the requirements of ‘Chain-of-Custody’ requirements certified under the Forestry Stewardship Council.


WPI Pulp Chain of Custody Certificate SGSHK-COC-000943

Valid 1 March 2022 until 28 February 2027. Certified since 2002.

WPI Timber (Tangiwai) - SGSHK-COC-000941
Valid 1 March 2022 until 28 February 2027.  Certified since 2002.

For more information about FSC and the business obligations for certification click here

Our Environmental Policy

WPI is committed to meeting its environmental responsibilities through the identification of those elements that make up the commercial and processing operations of the company, and to reduce as much as practicable, any negative impact on the environment.

In particular we are committed to:

  • The minimisation of waste in all operations
  • The maximisation of the use of raw materials through recovery and reuse if possible
  • The promotion of efficient utilisation of energy
  • The minimisation of any harm to the environment occurring because of any emissions to air, water and land arising from our production processes
  • The maintenance of good forest management practices and the long term sustainability of our business forest resource
  • The recognition of social values and community standards in applying environmental initiatives

We encourage all of our employees to take responsibility for the maintenance of this policy and the monitoring of environmental performance.

Energy and Environmental Conservation

As a participant in the Energy for Industry partnership, WPI Pulpmill saw the building of a cutting edge 12MW heat generation plant at Karioi for drying pulp. It is fuelled by wood waste and 20,000 tonnes of partially dried pulp sludge. It provides the majority of WPI Pulpmill heat requirements and supports energy efficiency and environmental management through the reduction in LPG consumption and CO2 emissions of some 25,000 tonnes annually.

As a Major Electricty User, WPI  complies with the requirements of the Electricity Commission for a Security of Supply Participant Outage Plan (SOSPOP). The procedures outlined in the outage plan are those that may be taken in response to major generation shortages and/or significant transmission constraints. The WPI Particpant Outage Plan is available to view on the Major Electricity Users Group (MEUG) website.

NZ Wood

WPI is an active partner and member of the NZ Wood programme in New Zealand.

WPI fully supports and endorses this organisation's committment for the promotion and development of New Zealand's sustainable forestry, wood and wood based products.

Maintaining and enhancing the long term viability of the wood industry overall is vital to forest and wood processing industries.

For more information about NZ Wood click here