Energy and Solar Calculator
Calculate your daily, monthly, quarterly and yearly energy costs with solar.
Enter your solar system details, electricity rates, and usage patterns to see your energy costs and savings.
Time Windows & Rates
Add time windows that cover the full 24 hours. Windows must not overlap and usage % must total 100%.
| Start | End | Rate ($/kWh) | Usage % | |
Per-Window Breakdown
| Window | Hours | Rate | Solar % | Solar | Usage | Battery Δ | Grid Import | Cost |
Per-Window Visual
Solar
Usage
Grid Import
Cost Breakdown
| Period | Usage (MWh) | Solar Offset (MWh) | Grid Import (MWh) | Cost Before Discount | Discount | Cost After Discount |
Savings Summary
Yearly Cost Without Solar:
Yearly Cost With Solar:
Yearly Savings:
Feed-in Tariff Income (Yearly):
Net Yearly Cost:
End-of-Day Battery SoC:
