Beijing's central Xicheng and Dongcheng districts have phased out coal-fired heating stoves, with over 29 thousand households now equipped with electric heaters.
The move aims to reduce emissions each year by an estimated 3 thousand tonnes of smoke, over 2600 tonnes of sulfur dioxide.
The capital city launched its coal-to-electricity transformation project in the year 2000.
Since then, over 300 thousand households in the two districts have switched over to electric heaters.
Nine coal retailers closed in the core areas in 2015.