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Perth · Fremantle
Battery storage solutions for Fremantle's coastal homes. Special considerations for salt air, wind, and heritage properties.
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W/m² irradiance
0 kW
Est. generation now
29.8 kWh
Avg daily yield
Household Type
Monthly Savings
~$206
Based on 6.6kW system, 70% self-consumption, 32c/kWh
Sun Hours
6 hrs/day
Annual average peak sun hours for Fremantle
DEBS Peak Window
3pm–9pm
Export at 10c/kWh during peak, 2c/kWh off-peak
Western Power Grid: Normal
No planned outages for Fremantle (6160). Network operating normally.
Backup Battery: Recommended
Southern metro suburbs have slightly above-average outage frequency. A battery with backup capability provides peace of mind during summer storms, which cause most unplanned outages in this zone.
85
SAIDI (min/yr)
1.1
Outages/yr
77
Avg duration (min)
Pass
ERA benchmark
Common outage causes in this zone:
Backup battery sizing for Fremantle:
With an average outage duration of 77 minutes (1.3 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.
Get accurate payback estimates with Fremantle's Synergy tariffs and WA battery rebate.
Start CalculatorFremantle's coastal location requires special attention to salt air corrosion and wind exposure. Choose batteries with appropriate IP ratings and corrosion-resistant enclosures.
Coastal-Rated Batteries:
Note: Indoor installation preferred for coastal areas to maximize lifespan.
Many Fremantle homes are heritage-listed or in conservation areas. Battery installations may require council approval and must be sympathetic to the property's character.
Installation Tips:
Fremantle is on Western Power's SWIS network with Synergy as the default retailer. Battery installations require Western Power approval.
Network Details:
5-7 kWh
Units, small cottages, couples. Daily usage 10-15 kWh.
10-13.5 kWh
Family homes, 3-4 bedrooms. Daily usage 18-25 kWh.
13.5-20 kWh
Large homes with pool/AC. Daily usage 25-35 kWh.
Up to $$1,300
$$130/kWh, 10kWh max eligible. Requires VPP participation.
Learn more →$3,000-$5,000
8.4 STCs/kWh at ~$39.9 each (Jan-Apr 2026), 6.8 from May 2026. Applied at point of sale.
Learn more →Get accurate payback estimates with Fremantle's specific tariffs, rebates, and coastal considerations.
Calculate My SavingsLast updated: March 2026
