India takes significant step in HFC decision: US envoy

India on Thursday proposed an amendment to the United Nations' Montreal Protocol, which calls on countries to phase out their use of HFCs, gases used in refrigerators, air conditioners and insulating foams that are a highly potent form of greenhouse gas emissions.

India's amendment calls for a 15-year transition period for developing countries to phase down their use of HFCs in appliances.

India had for years opposed a phase-out of HFCs under the protocol, which focuses on curbing the use of ozone-depleting substances.

It has argued HFCs should be handled instead under the Kyoto Protocol, which places the responsibility only on developed countries to make greenhouse gas cuts.

Negotiations on a climate agreement to succeed the Kyoto Protocol have been more challenging, as countries disagree over how to share the burden of emission cuts. Over 190 countries will meet in Paris later this year to try to secure a deal after more than two decades of talks.

President Barack Obama and State Department climate change negotiators had long pressed India to agree to phase out HFCs under the Montreal Protocol, to which every country in the world is a member.

Obama discussed phasing-down HFCs with Indian Prime Minister Narendra Modi in a bilateral meeting in India in January.

The United States had already secured cooperation in 2013 from China to phase out HFCs under the Montreal Protocol after years of opposition.

Air conditioner and refrigerator use has been projected to grow by up to 20 percent per year in India, according to the Environmental Investigation Agency, putting it on track to surpass HFC consumption in the United States.

"It signals that they share our concern about the growth of HFCs and their impact on the climate system, are in agreement that the Montreal Protocol is the right forum in which to address this issue," U.S. envoy Todd Stern told Reuters in an e-mailed statement.

Durwood Zaelke of the Institute for Governance and Sustainable Development said the move will help the UN climate talks.

"It will build critical momentum for a successful outcome in Paris for the climate negotiations in December, and complement what is expected to be an agreement where all countries participate by pledging to attack climate pollutants at their own pace," he said.