QUESTIONS WITHOUT NOTICE

Senator AYRES (New South Wales—Minister for Industry and Innovation and Minister for Science) (14:12): Australians are the biggest adopters of solar technology on their rooftops because it's in the interests of their electricity bills. It's saving them thousands of dollars every year. And do you know the other thing that, as it turns out, we're big adopters of?

Batteries? Tens of thousands of batteries are being installed every month. The PRESIDENT: Senator Canavan, second supplementary?