Carbon Offset Calculator

See the environmental impact of your solar and battery system. Every kWh of solar energy used instead of grid power reduces WA's carbon emissions.

Your System

Solar System Size6.6 kW

3 kW6.6 kW (typical)15 kW

Battery Size10 kWh

No battery10-13 kWh (typical)30 kWh

Self-Consumption Rate70%

30% (no battery)70% (with battery)95% (large battery)

Your Annual Carbon Impact

4.5

tonnes CO2 avoided per year

205

trees planted equivalent

26,429

car km avoided

18.1

flight hours offset

Over 25 years, your system offsets

113 tonnes CO2

Equivalent to planting 5,136 trees

Based on WA SWIS grid emissions factor of 0.67 kg CO2-e/kWh, Perth average 5 peak sun hours/day (BOM), and 20% system derate. Tree equivalents based on USDA average of 22 kg CO2/tree/year.