Changing Efficiencies in Petroleum Energy Use in New Zealand

Abstract

The paper introduces the work of the Energy Efficiency and Conservation Authority relating to gas and petroleum usages, with the dual imperatives to gain technical and economic efficiencies; and to reduce greenhouse gas emissions. Factors inhibiting greater efficiency include current investments, competition for new investment capital, price structures, and public attitudes. The current usage of petroleum products is presented with trends in sectors. Current gas use, from our history of development, wastes resources and produces high carbon dioxide emissions. Alternative trends can gradually be imposed to improve efficiency and lower environmental effects. Particular opportunities are in substituting direct use of natural gas and cogeneration for gas-fired electricity generation. There is a continuing upward trend in transport fuel use. Changing utilisation efficiencies in various modes of transport are reviewed and compared with overseas trends. While some progress has been made, considerable further improvement is possible by implementing regulatory, behavioural, and technical changes. The rising diesel and petrol usage relating to CNG and LPG is of concern. Overall, improvements in energy efficiency in New Zealand do not compare well with most OECD countries, but there are some positive trends in a number of sectors. The scope for improved efficiencies in New Zealand from newer technologies is reviewed with respect to domestic, commercial, industry and transport sectors. Means are outlined for taking opportunities with today's technologies through changing attitudes, standards, improved design of buildings, improved industrial processes, and financial packaging.