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A practical framework for narrowing down your battery options in Perth, WA.
Check the Clean Energy Council approved battery list
Required for DEBS export rates and Battery Rewards VPP
Confirm their accreditation on the SAA register yourself, and that they install the brand you pick
DC-coupled and all-in-one systems are usually the most efficient for a fresh install
AC-coupled batteries work with any existing inverter
In WA, adding a battery to an existing solar system counts as an alteration and can trigger whole-of-site compliance, so compare an AC-coupled retrofit against replacing your inverter with a hybrid. For many existing systems the sound path is replacing toward a DC-coupled / hybrid-inverter setup rather than expanding an AC-coupled one, avoiding future compliance limitations.
Enphase batteries are designed to pair with Enphase microinverters
Covers evening usage for low-consumption households (15-20 kWh/day)
Typical family home with evening + morning coverage (20-30 kWh/day)
High usage homes, pools, EVs, or backup requirements (30+ kWh/day)
A battery that's too large won't cycle fully, reducing lifespan and ROI. Use our calculator to find the optimal size for your usage pattern.
Sigenergy SigenStor, Fronius Reserva, Alpha ESS SMILE — can power entire home during outages
Most batteries - requires separate backup panel for essential circuits only
Some DC-coupled systems - battery only works when grid is available
Most warranties specify total energy throughput (e.g., 37.8 MWh). Calculate if this matches your expected daily cycling over the warranty period.
Typically 60-70% at end of warranty. Higher retention means better long-term value.
Check if the brand has Australian service centres and parts availability in WA.
Get a quote from an installer from our network that covers your area. You choose whether to act on it. No obligation.
Shortlisting from scratch? The desk indexes every CEC-approved model in solar batteries for Perth.