Your solar battery works even harder for you when you join the Battery Rewards Plan. Receive up to $600 a year in Prepaid Digital Visa Gift Cards when you choose to export to the grid during peak times. And that's on top of our Feed-in-Tariff of 4c/kWh. ^Prepaid Digital Visa Gift Cards are allocated quarterly and value varies depending on kWh exported in certain peak times. Earn a $10 gift card if you export between 1kWh and 50kWh and for every additional 50kWh an extra $10 will be added to the