The Government's being warned inaction on climate change will cost them far more than trying to reduce emissions.

Just-released briefing documents for the new Government show .. rather than heading for the target of a five percent reduction on 1990 carbon levels .. by 2025 we're expected to make a 50 percent increase.

The Ministry for the Environment is pleading for significant change within the next year.

Paul Young from Generation Zero says it doesn't need to be difficult.

"There's a lot of land that we can plant forest on and that would be happening if we had a decent price on carbon.

"We can do a lot more in the transport area to encourage public transport."