John Key will attend the climate change leaders conference at Copenhagen.

Mr Key made the announcement today following wide-spread criticism from the Green Party and environmental lobby groups.

"I have reassessed our position and taken advice from our negotiating team. I have decided that on balance it makes sense for me to be there for the leaders' meeting," Mr Key said.

He said while it is unlikely a binding agreement will be achieved at the summit, because other leaders will be present, he has decided to attend.

"We go to Copenhagen with a settled emissions trading scheme on the books, a credible mid-term emissions target, and talented and knowledgeable representation at the negotiations in the form of ministers Tim Groser and Nick Smith.

"Important decisions may be made in Copenhagen and it is important that I am there alongside other leaders so New Zealand has input at the highest level," Mr Key said. Read more.

Credit: www.nzherald.co.nz