Solar guide
Solar savings calculator
Estimate annual bill savings, export earnings and long-term financial benefit from solar panels.
Calculate solar electricity bill savings from self-consumption, electricity price and export tariff.
Use the main calculator
The full interactive calculator is available on the homepage. This page exists to explain the specific calculation topic in more detail and to help users understand the assumptions before making decisions.
Key assumptions to check
- Your average electricity price per kWh.
- Your local feed-in or export tariff.
- Average peak sun hours for your region.
- Roof orientation, pitch and shading.
- Installed cost after incentives or grants.