Future Housing Energy Efficiency Associated with the Auckland Unitary Plan

Abstract

Based on energy consumption of 200 Auckland sample houses, mean extra winter energy is a large portion (28.4%) of mean winter energy of Auckland sample houses. Mean total winter energy consumption is also a large portion (32.3%) of mean total annual energy consumption of the sample houses. Building thermal design for energy efficiency of Auckland housing should focus on building thermal performance under the winter climate conditions.

• This study uses relationships between winter energy consumption and building design data of the Auckland sample houses to estimate the future mean housing winter energy consumption associated with the Auckland Unitary Plan.

• The study uses the mean daily energy usage per unit volume (m3) of house indoor space (kWh/m3day) as the basic energy consumption unit because winter extra energy consumption is mainly related to indoor thermal conditions.