Senator AYRES (New South Wales—Minister for Industry and Innovation and Minister for Science) (14:52): Thank you, Senator Grogan. It's a very good question indeed, and I'm sure you didn't want to provoke those opposite, who sort of ping around on these questions, perhaps from embarrassment. If only we could have an embarrassment power electricity system. You're right, Senator Grogan. The Australian Energy Regulator has been very clear. Unreliable coal power stations drive electricity costs higher. Those old plants, 24 out of 28 of whom announced or brought forward their closures while those opposite were in government, who did nothing about it, shut down without warning, requiring the use of fast but expensive gas peaking power stations. Just yesterday, on one day, there were three gigawatts of unplanned coal power outages, making electricity more expensive for households and industry. It's not just the Australian Energy Regulator. Rio Tinto has been clear that the coal power from AGL Bayswater is too expensive after 2028. That's why we are building new generation—15 gigawatts added to the grid since we were elected and 20 gigawatts in the pipeline. We are delivering hundreds of thousands of home batteries, which make bills cheaper for Australians and help support our grid. Opposition senators interjecting— The PRESIDENT: The constant interjections, particularly from you, Senator Canavan, but not you alone, are incredibly disorderly. Senator McKenzie: From the National Party. The PRESIDENT: Senator McKenzie, once again you have to have the last word. Minister Ayres deserves to be heard in silence. If you can't give him that respect, leave the chamber. Senator AYRES: 'Deserves' was very generous indeed, President, but I will take that, absolutely. The fact that the National Party want to drag Australia back to that policy gibberish, and these guys aren't prepared to stand up to them— Senator McKenzie interjecting— Senator McDonald interjecting— The PRESIDENT: Minister Ayres, please resume your seat. Once again, Senator McKenzie and Senator McDonald, your constant running commentary is completely out of order and it's disrespectful to me, just after I've had to sit the minister down to bring you to order, to start up again. I'm serious. If you can't be quiet, leave the chamber. Senator AYRES: Where is the courage of the modern Liberal Party? Where is the consistency? Where is somebody who is prepared to stand up in an effective way to this extremist takeover— (Time expired) The PRESIDENT: Senator Grogan, first supplementary?