Despite China's booming economy, many poor individuals continue to use traditional stoves that burn low-grade solid fuels like charcoal and coal. Such stoves generate high levels of indoor air pollution that cause dire health problems, especially in women and children. These health concerns include asthma, bronchitis, and heart disease. By 2030, a new study predicts, nearly a quarter of the rural population and one-sixth of city dwellers could still be using such stoves. However, with a relatively small per capita investment, the study suggests, those values could drop to zero.
The study, led by Brijesh Mainali of the Royal Institute of Technology in Stockholm, Sweden, appears in a special issue of the American Institute of Physics' Journal of Renewable and Sustainable Energy (JRSE) that focuses on emerging energy trends in China.
Mainali, who has been working in the field of rural energy for the past 15 years, along with senior researcher Shonali Pachauri and researcher Yu Nagai both from the International Institute for Applied Systems Analysis in Vienna, Austria modeled cooking fuel and stove choices in both rural and urban Chinese populations. Choices were modeled to depend on standard economic variables such as income, technology costs, and fuel prices, along with some variables unique to developing countries such as inconvenience costs.
The analysis revealed that, under a business-as-usual scenario, 24 percent of the rural and 17 percent of the urban population might still depend on solid fuels in 2030. For an annual cost of just $2.39 per person, the researchers found, universal access to modern fuels could be achieved by that date in urban areas. Providing such fuels to rural areas would cost substantially more an estimated $10.75 per person but, Mainali notes, "the associated reductions in the adverse impacts on health and emissions of greenhouse gases, as well as general improvements in socio-economic welfare that are likely to accompany any access policies, justify such investment." Once there is access to modern fuels, he says, "the change that it brings to lives and society also changes prosperity levels and thus, in the long run, the required subsidies could be phased out or reduced."
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"Analyzing Cooking Fuel and Stove Choices in China Till 2030", Journal of Renewable and Sustainable Energy