welcome to the biogas website

Welcome to the Biogas in New Zealand web-pages. These pages will provide you with all you need to know about Biogas in New Zealand including where to go for advice on developing a biogas resource, a "Who's Who" of Biogas experts in New Zealand and what the current regulations governing biogas use and production are. This site also links to several government website-sites where there are extensive additional resources.

This site is presently under construction with new information added frequently. Please contact us with suggestions.

what's new?

what is biogas?

Biogas is a mixture of mainly methane and carbon dioxide with very small amounts of hydrogen sulphide and other impurities. The methane content can range from 50% to 80% (on a volumetric basis).

Biogas is commonly produced by anaerobic digestion of wet organic waste. This occurs in municipals wastewater and sewage treatment plants, industrial operations that have liquid wastes containing organic material, and on farms where animals are kept or held in a small area, such as pig or poultry farms. Anaerobic digestion is essentially a continuous process so it requires a reliable continuous feed of material. The digestion can occur in purpose built sealed containers or in covered ponds.

Biogas is a source of renewable energy.

Typical composition of biogas
Matter
%
Methane, CH4
50 - 75
Carbon dioxide, CO2
25 - 50
Nitrogen, N2
0 - 10
Hydrogen, H2
0 - 1
Hydrogen sulphide, H2S
0 - 3
Oxygen, O2
0 - 2

what are we doing?

  • The Bioenergy Association of New Zealand (BANZ) has formed a dedicated Biogas Interest Group (BIG) where Members of the Association with a specific interest in biogas can find out more and discuss issues with those in the same sector. The Group takes the lead on activities and initiatives relating to biogas including articles, research and workshops.
  • Some details about the Biogas Interest Group (BIG) are available here, while further details on the Group's activities are available to BANZ Members via the Members Only Area.
  • Download the BANZ Biogas Strategy prepared by the BANZ Biogas Interest Group here

 

Who's who in NZ biogas

Profiles
Click here for more.....
 
 

Information

These pages are maintained by the Biogas Interest Group (BIG). The Biogas Interest Group is one of the 4 Interest Groups established by the Bioenergy Association of New Zealand. Further details on BANZ are available on the BANZ website.