Each year, an estimated 6.5 million deaths are linked to air pollution and the number is set to increase significantly in coming decades unless the energy sector takes greater action to curb emissions, the International Energy Agency (IEA) said in its World Energy Outlook (WEO) special report which was released today.
Noting that emission was continuously declining in industrialised countries, the study said while in China, recent signs of decline are consolidated, emissions are generally on the rise in India, Southeast Asia and Africa as the expected growth in energy demand "dwarfs" the policy efforts related to the air quality.
"Each year an estimated 6.5 million deaths are linked to air pollution with the number set to increase significantly in coming decades unless the energy sector takes greater action to curb emissions.
"Premature deaths from outdoor air pollution are projected to rise from 3 million today to 4.5 million by 2040, concentrated mainly in developing Asia," the IEA report said.
IEA strategy based on existing energy technologies and policies can cut 50 per cent of pollutant emissions, the fourth-largest threat to human health, by 2040.
Highlighting the links between energy, air pollution and health, the study also identifies contributions the energy sector can make to curb poor air quality, the "fourth-largest threat" to human health, after high blood pressure, poor diets, and smoking.
"In the central outlook of the WEO special report, growing attention to this issue and an accelerating energy transition post-COP21 puts global emissions of these pollutants on a slowly declining trend to 2040.
A recent OECD report had said that air pollution could
cause 6-9 million premature deaths by 2060, with India and China facing threat of maximum number of such mortalities.
A clean air scenario demonstrates how energy policy choices backed by just a 7 per cent increase in total energy investment through 2040 produce a sharp improvement in health.
"Under such a scenario, premature deaths from outdoor air pollution would decline by 1.7 million in 2040 compared with our main scenario, and those from household pollution would fall by 1.6 million annually," the report said.
The study said energy production and use - mostly from unregulated, poorly regulated or inefficient fuel combustion - are the most important man-made sources of key air pollutant emissions - 85 per cent of particulate matter and almost all of the sulphur oxides and nitrogen oxides.
It said millions of tonnes of these pollutants are released into the atmosphere each year from factories, power plants, cars, trucks, as well as the 2.7 billion people still relying on polluting stoves and fuels for cooking (mainly wood, charcoal and other biomass).
Overall, it said that the extra impetus to the energy transition means that global energy demand is 13 per cent lower in 2040 than otherwise expected and of the energy that is combusted, three-quarters is subject to advanced pollution controls, compared with only around 45 per cent today.
