ROI simulation model
Our return on investment (ROI) calculator helps you understand the financial benefits of your solar installation by analysing key factors that influence your return on investment.
Key components
1. Electricity cost analysis
- Current electricity costs
- Expected inflation rates
- Potential savings through:
- Self-consumption
- Feed-in tariffs
2. System performance
- Solar system capacity
- Expected energy production
- Seasonal variations
- System efficiency over time
3. Cost considerations
- Initial investment
- Maintenance costs
- Equipment replacement planning
- Battery replacement
- Inverter replacement
- Available incentives and rebates
4. Financing options
- Loan calculations
- Interest rate impacts
- Flexible repayment terms
How we calculate your returns
We use industry-standard financial metrics including:
- Net Present Value (NPV)
- Internal Rate of Return (IRR)
- Payback Period
- Total Lifetime Savings
For detailed information about our discount rate calculations, see our Discount Rate Guide.
Understanding your results
The calculator provides:
- Monthly savings projections
- Long-term financial benefits
- Break-even analysis
- Equipment replacement timeline
- Total return on investment
These projections help you make an informed decision about your solar investment.