Solar Tools & Calculators
Use our free tools to understand solar costs, savings, and suitability for your home. All calculators use current Australian data and current government rebate assumptions.
Popular Solar Calculators
Rebate & STC Calculator
Calculate your federal Small-scale Technology Certificate (STC) rebate and state-specific incentives.
Estimate federal STC value and separate rebates, battery support, loans, and VPP offers so quote discounts are easier to understand.
Key Features:
- Federal STC estimate
- Current state support prompts
- Loans separated from rebates
- Eligibility reminders
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
Check whether a quote looks low, fair, or high using broad market bands and quality checks.
Paste quote details, spot missing inclusions, and copy a checklist before speaking with an installer.
Use Tool →Feed-In Tariff Comparison
Estimate export value and compare the full energy plan before chasing the highest feed-in rate.
See monthly and annual export value, then check usage rates, supply charges, and time-of-use rules.
Use Tool →Solar In Your Location
Location-specific solar costs, sunlight, rebate context, and quote checks.
Compare major city and regional guide pages without relying on unverified installer rankings.
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 Support
Federal STCs are usually already in the quote. Other support should be checked separately.
Annual Savings
Savings depend on self-consumption, tariff structure, export value, and system design.
Payback Period
Payback estimates are only useful when the installer explains assumptions clearly.