The 250 biggest polluters must either cut their emissions or buy credits to offset any above a baseline level, and they would again be allowed to buy from international markets.
But experts say it might be a moot point with Australian abatement among the cheapest globally, at about $15 a tonne.
While it is not clear yet which international markets Australian companies would access, at the moment the spot price of carbon credits is about $25 a tonne in New Zealand, $21 in the US and $34 in the European Union….
An excerpt from The West Australian