Forest harvester FAQs

Why should I consider harvesting my wood residue for use as energy?

The use of wood energy is encouraged as it can provide economic and environmental benefits to your business and New Zealand as a whole. Find out more about the economic and environmental benefits of using wood as energy. 

What is my wood residue worth?

The value of your wood residue depends on the purchase price and your costs. Find out more about the value of wood residue on the Revenue from residue page. You can also calculate the value of your residue given your specific situation using our tools and calculators.

  • The wood residue recovery cost tool determines the delivered cost of wood residue for a complete recovery operation. For example: The delivered cost of residue would be $38.54/tonne if the purchase price is $10/m3, residue is hogged and stored for one month at the landing and then transported 50km on-highway.The log landing revenue recovery calculator estimates the amount of wood residue left at a landing site after a harvesting operation. For example: The volume of residue available at a landing would be 8.4% of the merchantable volume if hauler-based extraction is used, manual log making occurred and the crop was average quality. That is 46 m3/ha based on 550 m3/ha of merchantable volume.
  • The in-forest cutover residue calculator estimates the amount of residue left on the cutover after a harvesting operation. For example: The volume of residue available on a cutover would be 19.9% if hauler-based extraction is used and the crop is average quality. That is 109 m3/ha of residue left based on 550 m3/ha of merchantable volume.
  • The wood residue transport cost calculator determines the forest residue transportation costs using various transportation options. For example: The cost of transport would be $18.50/tonne if a semi-trailer with bin is used and transported 50km on-highway.
  • The wood residue supply curve tool generates supply curves showing the cost of wood residue versus volume extracted for a number of locations throughout New Zealand.

Who can use my wood residue?

Currently, most wood residue is used for fuel by the wood processing industry. Find out more about wood residue users on the Revenue from residue page.Q: Who will buy my wood residue?Energy contractors can purchase residue from forest growers and process it into fuel. They then sell the fuel to industries with a wood fuel demand, such as the wood processing industry. To find an energy contractor in your region contact the Bioenergy Association of New Zealand. Alternately,

Who will buy my wood residue?

Energy contractors can purchase residue from forest growers and process it into fuel. They then sell the fuel to industries with a wood fuel demand, such as the wood processing industry. To find an energy contractor in your region contact the Bioenergy Association of New Zealand. Alternately, residue can be purchased directly by an end user. Find out more about wood residue users on the Revenue from residue page.

What effect will removing wood residue have on site productivity?

If good forest management techniques are used the removal of wood residue will have no negative effect on your operations and can actually have advantages like increased landing/planting space and reduced risks of slips or fires. Find out more about the effects of removing wood residue in the Managing forests section.

How do I extract my wood residue?

The process of extracting and processing wood residue ready for use as fuel involves several steps including forest management and processing, drying, handling and storing the fuel. Find out more in the producing wood for energy section.