Solar and battery rebates in Mandurah: what you can claim in 2026

Written and checked by the Energy Merchants desk · Reviewed 3 October 2026

This is the Mandurah guide. For every scheme in the state, see the Western Australia rebates guide.

Solar rebate in Mandurah

Mandurah has one of the highest shares of retirees in Western Australia, and a lot of homes use power during the day, which is the best case for rooftop solar. The state’s battery program matters more here than almost anywhere else in the country.

Mandurah (postcode 6210) is in STC zone 3, rated 1.382. Under the 5-year deeming period for 2026 installs, a 6.6 kW system earns 45 certificates (6.6 x 1.382 x 5, rounded down). At the roughly $38 to $40 spot range at the time of writing that is about $1,710 to $1,800 before any trader’s rate, and the deeming period falls to 4 years in 2027 and 1 year in 2030, with the scheme ending on 31 December 2030. Run your own size and postcode through the STC calculator, and confirm the zone for each street, since a few postcodes in the Peel region sit in different bands.

Battery rebate in Mandurah

The federal Cheaper Home Batteries Program covers CEC-approved, VPP-capable batteries from 5 to 100 kWh usable, with up to 50 kWh eligible, one per property, on new or existing solar. The STC factor is 6.8 per kWh at the time of writing, stepping down to 5.7 on 1 January 2027 and 5.2 on 1 July 2027. Since 1 May 2026 the first 14 kWh earns 100% of the factor, 14 to 28 kWh earns 60% and 28 to 50 kWh earns 15%, so a 10 kWh battery earns 68 certificates and a bigger battery earns less per extra kilowatt-hour. The WA Residential Battery Scheme is the state layer here and requires VPP enrolment; check Energy Policy WA for current amounts. Use the battery STC calculator and the battery STC pillar for the maths and the evidence rules.

What Western Australia adds

WA has no state panel rebate at the time of writing, but it does have a live state battery program: the WA Residential Battery Scheme, launched on 1 July 2025, which adds a rebate and an interest-free loan option on top of the federal discount. Third-party sources report that the battery must be an approved product, fitted by an accredited installer and enrolled in an approved VPP, and that the loan has an income threshold. We could not confirm remaining funding or current amounts, so check Energy Policy WA before telling a customer what they will receive. The WA page has the state detail. Federal STCs apply to eligible heat pump hot water; we found no separate WA hot water rebate. See the hot water STC page.

Network, export and approvals

Western Power runs the network for the south-west, and Synergy is the retailer. Western Power’s rules for new connections changed from 1 May 2026: third-party sources report that new installs choose between full export access, which requires remote disconnection capability, and a fixed 1.5 kW export cap, with inverters on AS/NZS 4777.2 Region B settings and CSIP-AUS communication. Systems installed before 1 May 2026 are reported as unaffected. Confirm the current rules with Western Power or Energy Policy WA before quoting.

Climate, roofs and typical systems

Mandurah has a Mediterranean climate: hot, dry summers with sea breezes and mild, wet winters. Salt air from the estuary and the ocean is a design issue, so corrosion-rated mounting and inverter housings are worth specifying. Housing includes canal-front homes, retirement villages, and large new estates in Lakelands and Meadow Springs. Flat sandy blocks mean few trees and little shading, so roofs are often well lit. Typical systems run 6.6 kW to 10 kW, and batteries suit households whose peak use is late afternoon and evening. Retirees often want a plain quote and a single point of contact for the battery and VPP paperwork.

Local and council programs

We did not find a City of Mandurah rebate on solar or batteries that we could confirm at the time of writing. Check the council and the Peel Development Commission for any community program, and do not promise a local amount without evidence.

Timing a job in Mandurah

Check the WA Residential Battery Scheme’s remaining funding and eligibility before the customer signs. The federal factor steps down to 5.7 on 1 January 2027 and to 5.2 on 1 July 2027, and the solar deeming period falls to 4 years in 2027. The January 2027 explainer covers what changes, and the installer guide to the battery program covers the paperwork. For the mechanism behind certificates, see the STC trading pillar, and for the wider picture start at the rebates hub.

Nearby pages

For the capital, see the Perth page; for the neighbouring south-west centre, see the Bunbury page. For the state rules, see the Western Australia page.