7144 (2026). Hon Dr Megan Woods to the Minister for Energy

Written Question

Published date: 18 Mar 2026

Metadata

Document type:	Written Question
Parliament number:	54
Question number:	7144 (2026)
Question asked:	03 Mar 2026
Member asking:	Hon Dr Megan Woods
Portfolio:	Minister for Energy
Minister replying:	Hon Simon Watts
Answer received:	12 Mar 2026
Status:	Question Answered
Reply type:	Reply
Document ID:	WQ_07144_2026
Document guid:	602efa2d-9780-4c5d-a6a7-4654090eb5fc

7144 (2026). Hon Dr Megan Woods to the Minister for Energy: What are the expected payback periods for solar-only systems versus solar-plus-battery systems by region, based on the latest data available?

Hon Simon Watts: EECA estimates payback period for solar systems can be from 7-12 years for the average household. As batteries are still relatively expensive, they can increase the payback period. This can vary by region based on factors such as sunshine hours and electricity usage.