关键词: 集中供暖, “煤改电”, “煤改气”, 空气污染治理

Abstract: The policy of “Coal-to-Gas/Electricity” is an important policy to deal with the haze pollution in the north of China in winter. From a theoretical point of view, the “Coal-to-Gas/Electricity” policy can significantly reduce the air pollution in the northern region during the heating period. However, in practice, due to the lag in“Coal-to-Gas/Electricity, there is a market failure problem with the “Coal-to-Gas/Electricity” policy. To this end, this article use the city's daily data to analyze the effect of the central heating and the “Coal-to-Gas/Electricity” policy on air pollution, so as to verify the effectiveness of the “Coal-to-Gas/Electricity” policy. The results show that the central heating has significantly increased the air pollution during the heating period, but the implementation of the“Coal-to-Gas/Electricity” policy has effectively reduced the air pollution, and it provides higher subsidies for cities with higher average air pollution and cities with light pollution. and the air pollution reduction effect is stronger for cities with higher subsidies, cities with superior average air pollution and light pollution, and provincial capital cities. In view of this, we should continue to promote the “Coal-to-Gas/Electricity” policy, cautiously carry out the “one-size-fits-all” of “Coal-to-Gas/Electricity”subsidy policy for clean heating, and establish a “Coal-to-Gas/Electricity” optimization policy with continued subsidies, considering the conditions in different cities and focusing on the transformation of key areas.

Key words: Central Heating, Coal to Electricity, Coal to Gas, Governance of Air Pollution