Solar Design Brisbane

Energy Usage

The right solar system size for your Brisbane property depends on how much electricity you use each day. Most households in Brisbane use around 25 kWh per day, whilst energy efficient homes can reduce this to roughly half.

Before installing solar it is often a good investment to first look to reduce your energy consumption where possible. This can be done through improved insulation, and energy efficient appliances.

Typical energy usage per person per day in Brisbane:

Low (Efficient)

~5 kWh

Medium (average)

~10 kWh

High (intensive)

~15+ kWh

Note: Actual usage varies depending on property size, building efficiency, climate, and appliances.

Daily Energy Usage: 25 kWh (~$0/month)

5 kWh 100 kWh

Electricity Cost

$ /kWh

Sell Price (FiT)

$ /kWh

Self Use %

%

lightbulb Note: These are simplified estimates. For detailed tariff inputs and advanced calculations, use the full Photonik app.

Solar System Sizing

A 6.6kW solar system would typically cover your average daily electricity consumption. Optimal sizing ranges from 9.9kW to 13.2kW to accommodate daily and seasonal generation variations.

A 6.6 kW system in Brisbane generates approximately 29.1 kWh daily on average, with seasonal variation from 3.72 kWh/kW/day in June to 4.87 kWh/kW/day in October.

Solar System Size: 6.6 (0 kWh/day)

1 kW 20 kW

lightbulb We recommend 6.5 - 8.7kW, generating 50 - 100% more than you use.

A 6.6 kW system in Brisbane can generate approximately 0 kWh annually based on local sun conditions.

Solar & Energy Savings

Calculate Heat Pump & EV Savings

Electrify your home by replacing gas heating, petrol vehicles, and other fossil fuel appliances with electric alternatives powered by clean solar energy. This delivers significant additional financial savings and substantial carbon emission reductions. Our calculator helps you compare costs and model the financial impact of switching to electric appliances and vehicles.

Calculate Electrification Savings

How Solar Reduces Your Electricity Bills

The calculations below show how your electricity bills change with solar. Your Old Bill of - per month (- annually) is calculated from your total energy consumption multiplied by the grid electricity rate. Your New Bill of - per month (- annually) accounts for solar generation, the percentage you use directly (self-consumption), remaining grid consumption, and feed-in credits for excess energy exported to the grid. This results in monthly savings of - (- annually).

Calculating...

Old Bill (Before Solar): Monthly: - | Annual: -

New Bill (With Solar): Monthly: - | Annual: -

Monthly Savings: $ 0 | Annual: $0 | Bill Savings: 0%

Monthly Savings

$ 0

Annual savings: $0 | Bill Savings: 0%

Battery Storage Brisbane

Solar Battery Sizing

A 6.6 kW solar system without battery storage achieves around 50% self-sufficiency in Brisbane, with 50% still coming from the grid. Adding a 10 kWh battery increases energy independence to approximately 86% annually, reducing grid reliance to 14%.

Accurate battery savings and ROI require the full Photonik design platform for comprehensive calculations.

Battery Size: 5 kWh

0 kWh 30 kWh

lightbulb Tip

A 5kWh battery will make you about 0% self sufficient.

Energy Self Sufficiency Calculator*

Calculating...

*Note: This calculator provides simplified battery self-sufficiency estimates. For accurate per-hour simulations that account for solar generation patterns, consumption timing, battery charging/discharging cycles, and efficiency losses across all seasons, use the full Photonik design tool.

Panel Placement Tool Brisbane

This is a simple panel placement tool that lets you quickly estimate panel count for a single roof area. Try Photonik for advanced features:

Multiple panel groups
Custom roof angles
Panel orientation

Shade loss calculations
Panel selection (1000+ models)
Full integration with our design tool

Loading panel placement tool...

EV Charging & V2G Brisbane

Electric Vehicle Charging with Solar

Charging your electric vehicle with solar power is one of the most cost-effective ways to fuel your car. In Brisbane, solar-powered EV charging can reduce your transportation costs significantly compared to grid electricity or petrol.

Vehicle-to-Grid (V2G) technology allows your EV battery to act as additional storage for your home, providing backup power and helping balance grid demand. This emerging technology can further maximize the value of your solar and battery investment.

When planning your solar system, consider your EV charging needs. A typical EV uses 15-20 kWh per 100km, so daily charging can add 5-15 kWh to your energy requirements. Our full design tool can help you plan a system that accommodates both your home and EV charging needs.

Solar & Battery System Cost Brisbane

Understanding Solar & Battery System Costs

Solar installation costs in Brisbane start at approximately $7,661 for a 6.6 kW system, with a 10 kWh battery bringing the total to around $12,904. Payback periods for solar-only installations average approximately 5.1 years, whilst battery storage extends payback but significantly improves energy independence.

The cost breakdown shows estimates for equipment costs, installation labour, and applicable taxes. Adjust system size and battery storage to see how it affects total investment and payback periods.