The demand, encapsulated in a joint letter to the chancellor, will be seen as a reminder of the power of her party, and the fact that it is gearing up to fight an election next year against Merkel's coalition partners, the Social Democrats.
He said the steps to reduce emissions after 2012 should be made smaller, because the car industry in particular needed greater wriggle room.
“And the cruel fine regime must be removed,” he added.
Lower Saxony minister president Christian Wulff recently called for the entire EU climate protection packet to be delayed. His North Rhine-Westphalia counterpart, Jürgen Rüttgers, has called for the packet to be diluted.
Environment Minister Sigmar Gabriel, of the Social Democrats, said Merkel should take tighter control of her party. “It is amazing how backwards the Union is when talking about climate change. Sometimes one has the impression that the chancellor should go to Düsseldorf and Hanover more often rather than Washington, in order to explain how climate protection can create jobs.”
He said he wanted to keep to the European climate change packet, adding that there should be no exceptions or delays.