Roof solar calculator
Size a system for your roof, and test the numbers.
Find the site, select or draw the roof, then adjust tilt, tariff, costs and incentives. Everything recalculates as you go.
Mapping your site…
No site selected. Search above, or enter a roof area to model a Sydney site.
System size-
Yearly generation-
Year-1 value-
Simple payback-
Monthly generation (kWh)
-
Cumulative return
Net of upfront cost after incentives
System
| Roof area modelled | - |
| Modules | - |
| Module area | - |
| Specific yield | - |
| Used on site / exported | - |
| CO₂-e avoided per year | - |
Financials
| Installed cost (ex GST) | - |
| STC incentive | - |
| Net cost | - |
| Year-1 electricity value | - |
| 25-year value | - |
| 25-year net benefit | - |
Indicative screening result only. Battery storage, demand charges and network export limits are covered in the engineering assessment.