The World Bank seeks to play a bigger role in sustainable energy projects around the globe including experimental carbon capture and storage (CCS) research, Vice President Katherine Sierra said on Thursday.

Global emissions of the main greenhouse gas carbon dioxide will jump more than 39 percent by 2030 without new policies and binding pacts to cut global warming pollution, the top U.S. energy forecast agency said on Wednesday.

Nearly 200 nations are set to meet late this year in Copenhagen to hash out a new agreement to control greenhouse gases as the Kyoto Protocol expires in 2012.

Washington defended its plans to cut its greenhouse gas emissions as among the most ambitious in the world Tuesday as major economies meeting in Paris rallied around a Mexican plan to raise cash to fight climate change.

Top executives from companies likely to win from climate change policies demanded on Tuesday that governments turn away from fossil fuels when they sign a new climate pact, expected in December.

Global negotiations late this year need not specify greenhouse gas cuts for the United States and other rich countries, as long as they set the right note for later talks, a Chinese climate policy official said on Tuesday.

Europe should halt the construction of any more wind farms until it has further examined their impact on wildlife, landscapes and the value of nearby houses, a new anti-wind farm group said on Tuesday.

China won praise for moves to cap its surging greenhouse gas emissions at a meeting of major economies on Tuesday, even as Germany criticised the lack of progress towards a new United Nations climate treaty.

"China is very active," French Environment Minister Jean-Louis Borloo told reporters on the second day of the two-day meeting of 17 major emitters.

Industry needs financial backing to reduce carbon emissions and fight climate change, business leaders told a climate conference on Monday, drawing criticism that they put profits before the environment.

France and Germany suggested on Monday that rich nations should collectively guarantee deep cuts in greenhouse gases by 2020 while giving flexibility to laggards such as the United States to catch up later.

Tens of billions of dollars are likely to be needed to help poor nations curb greenhouse gas emissions and adapt to climate change under a new U.N. treaty, European Environment Commissioner Stavros Dimas said.