How does a solar system save me money?
A home solar system reduces your electricity bills in two primary ways:
Self-Consumption: Using the power you generate directly during the day avoids the cost of buying electricity from the grid at retail rates.
Feed-in Tariffs: Under the Distributed Energy Buyback Scheme (DEBS), Synergy pays you for excess electricity exported to the grid. As of July 2024, the peak export rate (3 pm to 9 pm) is 10 cents per kWh, incentivizing late-afternoon generation or battery discharge.
What are the “3 Ingredients” for a successful system?
A successful system relies on:
The Panels: High-quality panels suited for Perth’s intense UV and heat conditions.
The Inverter: The “engine” of the system; it must be robust enough to handle high workloads and Western Australian temperatures.
The Installation: Proper placement and wiring are critical to ensuring safety and long-term performance.
Is the “$0 Power Bill” a myth?
Yes, for most homeowners, a $0 bill is a myth. While solar can significantly reduce costs, you will still face fixed daily supply charges from Synergy. Achieving a near-zero bill requires a very large system, a high-capacity battery, and extremely disciplined energy usage
Why should I add a battery to my home?
Batteries allow you to store solar energy generated during the day for use at night. This is increasingly important in WA because:
It maximizes self-consumption during the expensive evening peak periods.
It provides a “buffer” against rising power prices, which are projected to increase significantly.
New technical rules from May 2026 will allow for larger aggregate inverter capacities (up to 30kVA), making larger battery integrations easier.
What rebates are available for batteries in WA?
The Western Australian government is launching a Residential Battery Scheme in July 2025. This scheme offers substantial rebates to help offset the upfront cost:
The rebate amount you receive is dependent on the size of your battery so it will differ based on what size battery you need. Be aware, the Government frequently drops the rate given so the longer you wait, the less rebate you’ll receive.
Can solar panels cause my roof to leak?
If installed incorrectly, yes. Common issues in Perth include:
Improper Sealing: Failing to use high-quality “Dektites” or flashing on tile or Colorbond roofs.
Structural Strain: Not securing mounting rails to the rafters can lead to roof sagging or tile breakage during high winds.
Blocked Drainage: Panels installed too close to roof valleys can trap debris, leading to water overflow and leaks during heavy Perth winter storms.
What happens if I need roof repairs later?
If you need to repair or replace your roof (e.g., a full roof restoration), the solar panels must be decommissioned, removed, and then reinstalled by a CEC-accredited installer. This ensures the system remains compliant with Western Power’s technical requirements and that your warranties stay intact.
Can I charge my Electric Vehicle (EV) with solar?
Absolutely. This is the most cost-effective way to “fuel” your car. By installing a smart EV charger, you can set the vehicle to charge only when your solar system is producing surplus energy, effectively driving on “free” sunshine.
Do I need a special permit for an EV charger in Perth?
Most residential EV charger installations in Perth do not require council permits. However, they must be:
1. Installed by a licensed WA electrician.
2. Compliant with AS/NZS 3000 wiring standards.
3. Reported to Western Power if the charger’s capacity exceeds certain limits.
Single-Phase vs. Three-Phase Charging
The speed at which you can charge depends on your home’s power supply:
Single-Phase: Standard in most Perth homes; supports up to 7kW charging (approx. 40km of range per hour).
Three-Phase: Common in newer or larger homes; supports up to 22kW charging (approx. 120km of range per hour).
If you have any questions not answered in this FAQs section, please contact us HERE