A constitutional law expert has warned the Federal Opposition's promise to repeal the carbon price could cost taxpayers millions of dollars.
Opposition Leader Tony Abbott has pledged to scrap the laws, saying he will "oppose in Opposition and repeal in government".
But Professor George Williams says the carbon trading scheme will be well entrenched by the time the laws can be repealed in 2016.
And he says only the High Court will be able to rule if Mr Abbott can scrap the laws without paying compensation to companies which have made investments under the clean energy laws.
http://www.abc.net.au/news/2011-10-18/carbon-tax-repeal-could-cost-billions/3576874Greg Combet stood in the Parliament only a couple of weeks ago and said with a small smile, "He won't be able to".
Looks like he knows what he's doing.