28929 (2026). Scott Willis to the Minister for Energy
Written Question
Published date: 27 Jul 2026
28929 (2026). Scott Willis to the Minister for Energy: Further to Reply 20052, how many insulation grants does EECA expect to make to Decile 5, 6, and 7 homes over the next four years, and at what cost in each year?
Hon Simeon Brown: I am advised that EECA estimates that it will make 8,400 retrofits at a total cost of $15.5 million in Deciles 5, 6 and 7 in the 2026/27 year. This is based on the below analysis:
EECA has budgeted to achieve 21,000 overall insulation retrofits in the 2026/27 year. Approximately 40% of these retrofits will take place in Deciles 5, 6 and 7 (this estimate of 40% is based on historical trends. The actual figure will depend on overall market response to the programme and EECA's primary focus remains on delivery into deciles 8-10).
Based on 25/26 delivery:
Average overall cost of an insulation installation is $3,700 (excl gst). This translates to $1850 when a 50% grant is applied.
40% (Deciles 5, 6 and 7 ) of 21,000 is 8,400 retrofits
8,400 retrofits x $1850 =$15.5mil in 2026/27