Solar Tools & Calculators
Use our free tools to understand solar costs, savings, and suitability for your home. All calculators use current Australian data and 2025 government rebate rates.
Popular Solar Calculators
Rebate & STC Calculator
Calculate your federal Small-scale Technology Certificate (STC) rebate and state-specific incentives.
Find out exactly how much you can save upfront with government rebates. The STC rebate alone can save you $3,000-$6,000 depending on your system size and location.
Key Features:
- Federal STC rebate calculation
- State-specific rebates (VIC, SA, QLD)
- Total upfront savings
- Eligibility checker
Solar Power Calculator
Estimate electricity generation, savings, and payback period for your specific location and usage.
Get detailed projections of how much electricity your solar system will generate and how much money you'll save over 20 years.
Key Features:
- Annual generation estimates
- Monthly savings breakdown
- Payback period calculation
- 20-year financial projections
Battery Calculator
Determine if adding battery storage makes financial sense for your home.
Analyze whether battery storage will provide enough savings to justify the cost, including backup power benefits.
Key Features:
- Battery sizing recommendations
- Financial analysis
- Backup power duration
- State battery rebates
Additional Solar Tools
Price Explorer
Compare solar system prices across different quality levels and brands.
Understand what you should pay for different quality solar systems and avoid overpaying.
Use Tool →Feed-In Tariff Comparison
Find the best electricity retailer rates for selling excess solar power.
Compare feed-in tariff rates across retailers to maximize earnings from your solar system.
Use Tool →Solar In Your Location
Location-specific solar information, rebates, and installer recommendations.
Get detailed information about solar performance and incentives in your specific area.
Use Tool →How to Use These Tools
Follow this recommended order to get the most accurate picture of your solar investment
Start with Rebates
Calculate your upfront savings with the Rebate Calculator
Calculate Savings
Use the Solar Power Calculator for detailed financial analysis
Consider Extras
Explore batteries, pricing, and location-specific information
Understanding Solar Economics in Australia
Upfront Rebates
Federal STC rebate reduces system cost immediately. Amount depends on system size and location.
Annual Savings
Typical yearly savings on electricity bills plus feed-in tariff payments for excess power.
Payback Period
Time to recover investment through savings. After payback, enjoy 15+ years of free electricity.