Senator WILLIAMS (New South Wales—Nationals Whip in the Senate) (14:16): Mr President, I have a supplementary question. I refer the minister to the fact that without the carbon tax, Grain Products Australia paid 18.4c a kilowatt hour and the carbon tax has added 2.1c per kilowatt hour. This has resulted in an 11.5 per cent increase in their electricity charges. Can the minister explain why Grain Products Australia is already suffering an increase that is greater than the 10 per cent increase predicted by the government?