The Climate Minister promises he's focused on a 'credible' carbon credit market after yesterday's auction came up empty. 

Not one unit was bought out of 3.5 million available. 

Questions have been raised about the price of the credits and the gap between demand and supply. 

Minister Simon Watts told Mike Hosking that the Government's working on its emissions reduction plan alongside the trading scheme. 

He says they've been working hard to send a signal to the market on what the Government's intent is. 

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