Solar Design Melbourne

Energy Usage

Your daily energy consumption determines the optimal solar system size for your home in Melbourne. Whilst typical Melbourne households consume 25 kWh daily, homes with good insulation and modern appliances often use far less energy.

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 Melbourne:

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 solar system sized at approximately 6.6kW would cover your typical daily energy needs. For best results, size your system between 9.9kW and 13.2kW to account for fluctuations in solar output throughout the day and year.

A 6.6 kW solar array in Melbourne delivers approximately 27.8 kWh daily, with generation varying seasonally from 3.23 kWh/kW/day in June up to 4.80 kWh/kW/day in February.

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 Melbourne 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 Melbourne

Solar Battery Sizing

With solar-only (no battery), a 6.6 kW system provides approximately 50% self-usage in Melbourne, depending on your consumption patterns, drawing 50% from the grid. A 10 kWh battery storage system can raise your energy independence to approximately 86% annually, lowering grid reliance to 14%.

The full Photonik tool provides detailed battery savings and return on investment 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 Melbourne

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 Melbourne

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 Melbourne, 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 Melbourne

Understanding Solar & Battery System Costs

A 6.6 kW solar system in Melbourne is priced at approximately $7,661, whilst adding 10 kWh of battery storage increases the total investment to around $12,904. Solar-only systems typically pay for themselves in around 5.2 years, whilst adding battery storage usually extends payback whilst increasing energy independence.

Pricing includes equipment, labour, and taxes. Use the sliders to adjust system size and battery capacity, observing how changes impact total cost and payback.