2026 Australian Battery Market Update: CER Postcode Data & Rebate Impact

Published by Kratos Energy Research Desk | Source: Clean Energy Regulator (CER) Postcode Registry

The Clean Energy Regulator (CER) has published its latest quarterly postcode installation dataset, documenting small-scale battery adoption across Australia following the first year of the Federal Cheaper Home Batteries Program.

3 Key Highlights from the 2026 CER Report

• Suburban Battery Penetration Up 240%: Battery installations across NSW, Victoria, and the ACT increased by 3.4x year-on-year compared to pre-rebate levels.

• Average Installed Storage Grows to 11.2kWh: Australian households are moving away from entry-level 5kWh batteries, choosing 10kWh to 13.5kWh systems.

• Retrofits Overtake New Installations: Over 58% of battery installations in 2026 were retrofitted to existing rooftop solar systems.

Postcode Leaderboard: Top Growth Suburbs in NSW, VIC & ACT

CER Postcode Battery Growth Rankings:

 1. Postcode 2765 (Riverstone / Marsden Park, NSW) ──────► 1,840 kWh Installed

 2. Postcode 3029 (Hoppers Crossing / Tarneit, VIC) ────► 1,620 kWh Installed

 3. Postcode 2913 (Gungahlin / Amaroo, ACT) ─────────────► 1,410 kWh Installed

 4. Postcode 2560 (Campbelltown / Gregory Hills, NSW) ──► 1,280 kWh Installed

 5. Postcode 3977 (Cranbourne, VIC) ─────────────────────► 1,150 kWh Installed

"The combination of lower feed-in tariffs and federal battery discounts has permanently altered consumer economics. Homeowners no longer view batteries as an optional extra—they view them as essential financial risk management against rising grid energy costs." — Kratos Energy CTO