Peter Dutton also declines to say whether he would back a further extension of household energy bill rebates if he wins coming electionFollow our Australia news live blog for latest updatesGet our breaking news email, free app or daily news podcastHundreds of thousands of households face higher power bills after the energy regulator proposed lifting benchmark prices by up to 9% in some regions.The move prompted the energy minister on Thursday to concede power bills were “too high” and urge users to shop around for the best deal, while the opposition branded the price rise a failure of Labor’s energy