How much energy will it generate?

A 20kW system will generate around 16,000 kWh per year, a 50kW system will generate around 42,900 kWh per year. To put this into perspective, a standard family home consumes around 4500 kWh per year. Our predicted energy output is calculated using the government Standard Assessment Procedure (SAP). It takes into consideration the pitch of the panels, their orientation to the sun and the size and quantity of panels.