India would reject a deal to combat climate change that includes a pledge for the world to wean itself off fossil fuels this century, a senior official said, underlying the difficulties countries face in agreeing how to slow global warming.

Almost 200 nations will meet in the French capital on November 30, to try and seal a deal to prevent the planet from warming more than the 2 degrees Celsius that scientists say is vital if the world is to avoid the most devastating effects of climate change.

To keep warming in check, some countries want the Paris agreement to include a commitment to decarbonise -- to reduce and ultimately phase out the burning of fossil fuels like coal, oil and gas that is blamed for climate change -- this century.

India, the world's third largest carbon emitter, is dependent on coal for most of its energy needs, and despite a pledge to expand solar and wind power has said its economy is too small and its people too poor to end use of the fossil fuel anytime soon.

"It's problematic for us to make that commitment at this point in time. It's certainly a stumbling block (to a deal)," Ajay Mathur, a senior member of India's negotiating team for Paris, told Reuters in an interview this week.

"The entire prosperity of the world has been built on cheap energy. And suddenly we are being forced into higher cost energy. That's grossly unfair," he said.

Mathur said India, whose position at climate talks is seen by some in the West as intransigent, was committed to the 2 degrees ceiling as a long-term goal and was confident a deal would be reached.

But he said Prime Minister Narendra Modi's government wanted an agreement that required countries like India to do more over time as they become wealthier, rather than an "ideology-driven process" committing everyone to ending carbon usage.

India also wants to see rich nations' pledges to cut greenhouse gas emissions subjected to tougher reviews than those of developing nations, and Mathur warned against an "external penal regime that will only turn people back".

India, whose 1.2 billion people produce far lower emissions per capita than the world average, in October committed to slow the rate of growth in its carbon output by a third over the next 15 years.

While the pledge was welcomed by some environmentalists, others worry that India's huge population and rapid industrialisation mean heavy future use of carbon will tip the balance in the global fight against climate change. - Reuters