Based on: 25 kWh/day usage · 8 kW solar · 5 kWh battery · typical tariffs

Solar & Battery Savings in Brisbane & QLD Get quotes from local installers

Design solar and battery systems for Queensland using Photonik's professional design platform. Queensland leads Australia in cumulative solar installations with over 1.1 million systems, representing 27% of all Australian installations. Approximately 50% of detached homes have solar systems, reflecting the state's excellent solar potential and generous feed-in tariffs.

Solar Energy Savings in Queensland

How Solar Reduces Your Electricity Bills

The calculations below show how your electricity bills change with solar.

Calculating...

Based on: 25 kWh/day usage · 8 kW solar · 5 kWh battery · typical tariffs

Adjust these amounts in the next section

Old Bill (Before Solar): Monthly: 181.0 | Annual: 2166.0

New Bill (With Solar): Monthly: 66.0 | Annual: 794.0

Monthly Savings: $ 114.0 | Annual: $1372.0 | Bill Savings: 63%

Monthly Savings

$ 114.0

Annual savings: $1372.0 | Bill Savings: 63%

What drives your savings in Queensland

Queensland's high solar irradiance — particularly in inland and northern regions exceeding 5.5 kWh/m²/day — drives strong system output year-round. Retail rates of 28–32c/kWh make self-consumption the primary savings lever, as standard feed-in tariffs have fallen to 5–8c/kWh. Battery owners can access wholesale export pricing, earning significantly more during peak demand periods. With over 50% of detached homes already having solar, afternoon wholesale prices can drop low (good for battery charging) while evening peaks reward stored exports.

Your usage & system size Queensland

Energy usage & tariffs

Energy consumption patterns in Queensland reflect the state's subtropical and tropical climate, with higher cooling needs during hot, humid summers. The average Queensland household uses between 20-30 kWh per day, with Brisbane and coastal properties typically consuming more during summer months for air conditioning. Energy-efficient properties throughout Queensland often use significantly less through modern insulation, efficient air conditioning systems, and smart home technologies.

Before installing solar, consider reducing your energy consumption through improved insulation and energy-efficient appliances. This is particularly valuable in Queensland, where high solar generation potential means reducing consumption can significantly lower the required system size and improve returns, especially given the state's generous feed-in tariffs.

Daily Energy Usage: 25 kWh (~$181.0/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.

Representative flat export rate (feed-in tariff). What you earn per kWh of surplus solar exported to the grid. Your actual rate depends on your provider, plan, and time of day.

See how export rates work →

Estimated at 75% of the retail grid rate. A battery lets you store daytime solar and export during expensive peak hours, so each exported kWh is typically worth more than a flat feed-in tariff. Real returns depend on your time-of-use tariff and battery efficiency.

See how export rates work →

Solar system size

You'll need around 6.6kW of solar to match your average consumption in Queensland. We recommend sizing between 9.9kW and 13.2kW for optimal results, accounting for daily and seasonal variations. Queensland enjoys excellent solar potential, with Brisbane averaging around 4.5-5.0 kWh/kW/day annually, amongst the highest in Australia, with consistent generation throughout the year.

A 9.9 kW system in Queensland generates approximately 43.7 kWh daily on average, with seasonal variation from 3.72 kWh/kW/day in June to 4.87 kWh/kW/day in October. Queensland's exceptional solar irradiance, combined with generous feed-in tariffs (especially in regional areas) and competitive installation costs, makes solar particularly attractive for homeowners across the state.

Solar System Size: 8 (35 kWh/day)

1 kW 20 kW

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A 8 kW system in Queensland can generate approximately 12888.0 kWh annually based on local sun conditions.

Battery storage

With solar-only (no battery), a 9.9 kW system provides approximately 50% self-usage in Queensland, depending on your consumption patterns, drawing 50% from the grid. Adding a 10 kWh battery increases energy independence to approximately 86% annually, reducing grid reliance to 14%. Battery storage is valuable in Queensland, allowing you to store excess daytime generation for evening use and maximising the value of your solar investment, especially as feed-in tariffs vary by retailer.

Standard flat-rate feed-in tariffs have fallen below retail rates in most states, but homeowners with batteries can now access wholesale export pricing through certain retailers and virtual power plant schemes. During peak demand periods (typically 4–8pm), wholesale rates can reach 20–40c/kWh or higher — fundamentally changing battery payback compared to a fixed feed-in tariff. For accurate battery savings and ROI calculations specific to your state and retailer, use the full Photonik design tool.

Battery Size: 5 kWh

0 kWh 30 kWh

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

The sweet spot for most households is 5 – 13 kWh — larger batteries add independence but with diminishing payback, especially where feed-in tariffs are low.

System Pricing & Payback for Queensland

Use the full Photonik solar planning and design platform to model a complete system for your home — including detailed costs, equipment options, and financial returns.

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For a quick price guide, see the Australia solar calculator.