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Perth · Mundijong
Solar and battery guidance for Mundijong homes in South-Eastern Suburbs. Sized battery options for 22-30 kWh daily usage.
What-if simulator. Drag the timeline + sliders to see how a system would behave on a typical Mundijong day. Weather + grid status update live when the APIs are reachable.
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W/m² irradiance
0 kW
Est. generation now
37.3 kWh
Avg daily yield
Household Type
Annual savings
$2,649
Monthly average
$221
Solar used at home
6,950 kWh/yr
Exported to grid
6,650 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
~$221
Based on 8kW system, 70% self-consumption, 32c/kWh
Sun Hours
5.1 hrs/day
Annual average peak sun hours for Mundijong
DEBS Peak Window
3pm–9pm
Export at 10c/kWh during peak, 2c/kWh off-peak
Western Power Grid: Normal
No planned outages for Mundijong (6123). Network operating normally.
Standard home
13.5–20 kWh
Large home
20–26 kWh
Retrofit option: AC-coupled retrofits suit established systems
Capacity ranges only — Find My Battery matches you to the specific brand and model that fits your situation.
Backup Battery: Recommended
South-east suburbs near the hills have moderately higher outage rates due to tree contact and storm exposure. Backup-capable batteries are worth considering, especially for homes with medical equipment or home offices.
95
SAIDI (min/yr)
1.3
Outages/yr
73
Avg duration (min)
Pass
ERA benchmark
Common outage causes in this zone:
Backup battery sizing for Mundijong:
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.
Statewide support
WA Battery Scheme
Capped at 10 kWh, Synergy customers
$1,300
up to
Federal STCs
13.5 kWh battery example. 6.8 STCs/kWh times ~$39.9
~$3,631
rebate
Interest-free loan
Available alongside the rebate for eligible households
$10k
up to
Rebates also apply to retrofit installations on existing solar.
Ongoing earnings
Synergy Battery Rewards
Up to 30 dispatch events a year, 2-6 hours each
30
events/yr
Event payment
Paid per kWh your battery exports during a dispatch event
$0.70
per kWh
Typical annual earnings
For a 10-13 kWh battery across 15-25 events at 70c/kWh
~$100-180
per year
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 →