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Perth · Mundaring
Solar and battery guidance for Mundaring homes in Eastern Hills. Sized battery options for 20-28 kWh daily usage.
What-if simulator. Drag the timeline + sliders to see how a system would behave on a typical Mundaring day. Weather + grid status update live when the APIs are reachable.
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W/m² irradiance
0 kW
Est. generation now
36.2 kWh
Avg daily yield
Household Type
Annual savings
$2,428
Monthly average
$202
Solar used at home
6,205 kWh/yr
Exported to grid
6,995 kWh/yr
Based on 8 kW solar × 5.1 sun hours × Perth derate, with a 10 kWh battery offsetting peak-rate Synergy A1 usage and exporting the surplus at DEBS peak/off-peak rates. Real savings depend on your specific tariff plan, usage pattern, and installation — an installer confirms the final quote.
Monthly Savings
~$202
Based on 8kW system, 70% self-consumption, 32c/kWh
Sun Hours
5.1 hrs/day
Annual average peak sun hours for Mundaring
DEBS Peak Window
3pm–9pm
Export at 10c/kWh during peak, 2c/kWh off-peak
Western Power Grid: Normal
No planned outages for Mundaring (6073). Network operating normally.
Capacity ranges only — Find My Battery matches you to the specific brand + model that fits your situation.
Backup Battery: Recommended
Eastern suburbs have average reliability. The mix of established and new infrastructure means outage frequency varies by street. Backup-capable batteries add resilience during summer storm season.
88
SAIDI (min/yr)
1.2
Outages/yr
73
Avg duration (min)
Pass
ERA benchmark
Common outage causes in this zone:
Backup battery sizing for Mundaring:
With an average outage duration of 73 minutes (1.2 hours), a 5 kWh backup-capable battery is typically sufficient to maintain essential loads (lights, fridge, internet, medical equipment). For whole-home backup during longer outages, consider 10-13.5 kWh with backup capability.
WA Battery Scheme: Up to $1,300 (capped at 10kWh, Synergy customers)
Federal STCs: ~$4,500 for a 13.5kWh battery (8.4 STCs/kWh × ~$39.9, Jan–Apr 2026)
Interest-free loan: Up to $10,000 available
Rebates also apply to retrofit installations on existing solar.
Programme: Synergy Battery Rewards
Events: Up to 30/year (2–6 hours each)
Payment: $0.70/kWh exported during events
Annual earnings: ~$100–180 for a 10–13kWh battery (15–25 events × 70¢/kWh)
VPP enrolment is mandatory for the WA battery rebate from May 2026.
Upload your Synergy bill on BillWise to see exactly where your money goes and how much you could save with solar + battery.
Analyse your bill on BillWise →