WARSAW, Poland (AP) — The U.N.'s chief climate diplomat on Monday urged the coal industry to diversify toward cleaner energy sources and leave most of the world's remaining coal reserves in the ground.


On the sidelines of a U.N. climate conference, Christiana Figueres told dozens of CEOs of coal companies meeting at Poland's Economy Ministry that their industry needs to change radically to curb emissions of heat-trapping gases that scientists say are warming the planet.


"The world is rising to meet the climate challenge as risks of inaction mount, and it is in your best interest to make coal part of the solution," Figueres said.


The coal event was seen as a provocation by climate activists, who used a crane to reach the ministry's roof, where they unfurled banners criticizing Poland's — and the world's — reliance on coal and other fossil fuels.


Police used another crane to take them down, as panelists at the coal summit said that the people in the room, not the people on the roof, have the possibility to change the coal industry.


The World Coal Association, which organized the event, said it was meant as a contribution, not an alternative, to the U.N. climate talks.


Poland generates some 90 percent of its electricity from coal and Economy Minister Janusz Piechocinski said coal must be a part of talks on reducing CO2 emissions.



"You cannot have a low-emissions energy transformation without talking about coal," because it's the second-biggest energy source in the world," he said.


Coal accounts for less than 30 percent of the world's energy supply but more than 40 percent of energy emissions, according to the International Energy Agency.


Figueres, who was criticized by some climate activists for attending the conference, noted coal's role in economic development since the industrial revolution but said it's come at "an unacceptably high cost to human and environmental health."


She said aging, high-polluting coal plants must be closed and new plants should implement technologies that allow for emissions to be trapped before they are released into the atmosphere. But to bring down CO2 emissions to levels that would avoid dangerous levels of warming, most of the existing coal reserves must be left in the ground, she said.


"Some major oil, gas and energy technology companies are already investing in renewables, and I urge those of you who have not yet started to join them," Figueres said.


While coal emissions have declined in the U.S. they are growing fast in China and India to meet the energy needs of their fast-growing economies.


Coal industry officials say significant emissions reductions can be achieved by improving the efficiency of coal-fired plants. But in the long term analysts say expensive carbon-capture technologies need to be implemented to make the deep cuts required to slow climate change.


___


Associated Press writer Karl Ritter contributed to this report.



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  • Power Plants


    2011 Greenhouse Gas Emissions (in millions of metric tons of <a href="http://www.epa.gov/climatechange/glossary.html#C" target="_hplink">carbon dioxide equivalent</a>): 2,221 Number of Reporting Facilities: 1,594 (<a href="http://ghgdata.epa.gov/ghgp/main.do" target="_hplink">Data courtesy of the EPA</a>)




  • Petroleum And Natural Gas Systems


    2011 Greenhouse Gas Emissions (in millions of metric tons of <a href="http://www.epa.gov/climatechange/glossary.html#C" target="_hplink">carbon dioxide equivalent</a>): 225 Number of Reporting Facilities: 1,880 This sector includes offshore petroleum and natural gas production, onshore petroleum and natural gas production, natural gas processing, natural gas transmission/compression, natural gas local distribution companies, underground natural gas storage, liquefied natural gas storage, liquefied natural gas imp/exp equipment and other petroleum and natural gas systems (<a href="http://ghgdata.epa.gov/ghgp/main.do" target="_hplink">Data courtesy of the EPA</a>) (Photo by KAREN BLEIER/AFP/Getty Images)




  • Refineries


    2011 Greenhouse Gas Emissions (in millions of metric tons of <a href="http://www.epa.gov/climatechange/glossary.html#C" target="_hplink">carbon dioxide equivalent</a>): 182 Number of Reporting Facilities: 145 (<a href="http://ghgdata.epa.gov/ghgp/main.do" target="_hplink">Data courtesy of the EPA</a>)




  • Chemicals


    2011 Greenhouse Gas Emissions (in millions of metric tons of <a href="http://www.epa.gov/climatechange/glossary.html#C" target="_hplink">carbon dioxide equivalent</a>): 180 Number of Reporting Facilities: 458 This sector includes adipic acid production, ammonia manufacturing, flourinated GHG production, HCFC-22 prod./HFC-23 dest., hydrogen production, nitric acid production, petrochemical production, phosphoric acid production, silicon carbide production, soda ash manufacturing, titanium dioxide production and other chemicals (<a href="http://ghgdata.epa.gov/ghgp/main.do" target="_hplink">Data courtesy of the EPA</a>)




  • Other


    2011 Greenhouse Gas Emissions (in millions of metric tons of <a href="http://www.epa.gov/climatechange/glossary.html#C" target="_hplink">carbon dioxide equivalent</a>): 126 Number of Reporting Facilities: 1,377 This diverse sector includes underground coal mines, food processing, ethanol production, universities, manufacturing, military, use of electrical equipment, electronics manufacturing, electrical equipment manufacturers and other. (<a href="http://ghgdata.epa.gov/ghgp/main.do" target="_hplink">Data courtesy of the EPA</a>)




  • Waste


    2011 Greenhouse Gas Emissions (in millions of metric tons of <a href="http://www.epa.gov/climatechange/glossary.html#C" target="_hplink">carbon dioxide equivalent</a>): 103 Number of Reporting Facilities: 1,593 This sector includes municipal landfills, industrial landfills, wastewater treatment and solid waste combustion (<a href="http://ghgdata.epa.gov/ghgp/main.do" target="_hplink">Data courtesy of the EPA</a>) (Photo by George Frey/Getty Images)




  • Metals


    2011 Greenhouse Gas Emissions (in millions of metric tons of <a href="http://www.epa.gov/climatechange/glossary.html#C" target="_hplink">carbon dioxide equivalent</a>): 115 Number of Reporting Facilities: 297 This sector includes aluminum production, ferroalloy production, iron and steel production, lead production, magnesium, zinc production and other metals (<a href="http://ghgdata.epa.gov/ghgp/main.do" target="_hplink">Data courtesy of the EPA</a>) (Photo by Spencer Platt/Getty Images)




  • Minerals


    2011 Greenhouse Gas Emissions (in millions of metric tons of <a href="http://www.epa.gov/climatechange/glossary.html#C" target="_hplink">carbon dioxide equivalent</a>): 98 Number of Reporting Facilities: 362 This sector includes cement production, glass production, lime manufacturing and other minerals (<a href="http://ghgdata.epa.gov/ghgp/main.do" target="_hplink">Data courtesy of the EPA</a>)




  • Pulp and Paper


    2011 Greenhouse Gas Emissions (in millions of metric tons of <a href="http://www.epa.gov/climatechange/glossary.html#C" target="_hplink">carbon dioxide equivalent</a>): 44 Number of Reporting Facilities: 230 This sector includes pulp and paper manufacturers and other paper producers (<a href="http://ghgdata.epa.gov/ghgp/main.do" target="_hplink">Data courtesy of the EPA</a>)