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Perth · Piara Waters
Solar and battery guidance for Piara Waters homes in South-Eastern Suburbs. Sized battery options for 22-30 kWh daily usage.
Quick answer
A typical Piara Waters home uses 22-30 kWh a day and suits 6.6-10 kW of solar with a 10-13.5 kWh battery. At current Synergy rates that setup saves about $2,500 a year, and the WA Battery Scheme covers up to $1,300 of the battery.
Sources: SBP suburb estimates · Synergy A1 33.26c/kWh · WA Battery Scheme · Piara Waters yield 1,650 kWh/kW
What-if simulator. Drag the timeline + sliders to see how a system would behave on a typical Piara Waters day. Weather + grid status update live when the APIs are reachable.
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W/m² irradiance
0 kW
Est. generation now
29.8 kWh
Avg daily yield
Household Type
Annual savings
$2,469
Monthly average
$206
Solar used at home
6,659 kWh/yr
Exported to grid
4,232 kWh/yr
Based on 6.6 kW solar × 5 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
~$206
Based on 6.6kW system, 70% self-consumption, 33c/kWh
Sun Hours
5 hrs/day
Annual average peak sun hours for Piara Waters
DEBS Peak Window
3pm–9pm
Export at 10c/kWh during peak, 2c/kWh off-peak
Western Power Grid: Normal
No planned outages for Piara Waters (6112). Network operating normally.
19,091
Solar systems
108.6
MW installed
5.7 kW
Avg system
Based on Clean Energy Regulator data for postcode 6112. WA has 580,796 registered solar installations totalling 3.33 GW, the highest per-capita rooftop solar adoption rate in Australia.
Data to July 2026. Licensed from the Clean Energy Regulator, Commonwealth of Australia under a Creative Commons Attribution 4.0 licence.
Standard home
10–13.5 kWh
Large home
20–26 kWh
Retrofit option: AC-coupled retrofits suit established systems
Capacity ranges only — Find My Battery shows you options for 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 Piara Waters:
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, 2-4 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.
Compare quotes from SAA-accredited local installers — you choose which to act on. No obligation, no pressure.
Tell us about your home and energy use. We connect you with verified WA installers covering Piara Waters for free, no-obligation quotes.
Get free quotes →AS/NZS 5139 clearance rules, garage vs outdoor walls, and what installers check on-site.
A step-by-step method covering evening usage and seasonal AC demand.
Activation events credit 70¢/kWh on top of DEBS exports, and signing up is a WA rebate condition.
