The role of bioenergy to meet the renewable energy target for New Zealand Dr. Per S. Nielsen
Introduction The NZ energy sector is in-efficient Electricity is to a large extend used to cover space heating and hot water demand
Introduction Waste Minimisation Strategy National Energy Efficiency and Conservation Strategy The Climate Change Policy Renewable Energy Target
NZ Waste minimisation Strategy By 2003 all territorial local authorities have instituted measurement programmes to identify existing organic waste quantities, and set local targets for diversion from disposal By 2010 the diversion of commercial organic wastes from landfills to beneficial use will have exceeded 95% By 2005 full cost charging policies are established and cleanfills comply with guidelines
Climate Change Policy Reduce average GHG emissions to 1990 levels between 2008-2012. In 2001 the energy sector contributed 39% of NZ’s GHG emissions (31 Mtons CO2 eq) The waste sector contributed 5% or 2.3 Mtons CO2 eq.
Renewable Energy Target Renewable energy target 30 PJ/year in additional energy (basis 2000). This is an increase from 133.5 PJ/year in 2000 to 163.5 PJ/year in 2012.
Organic waste in NZ
Where does it go?
Avoided CH4 emissions
Fossil fuel substitution
Fossil fuel substitution
Fossil fuel substitution
Fossil fuel substitution
Fossil fuel substitution
Conclusions 13.7 Mtons of organic Another 40-50 PJ per year potentially available. Replacing use of electricity has the highest CO2 benefit Utilising the more “difficult” organic waste streams also help avoid emission of CH4 from landfills.