•Total processing scale of 4,500 tons/day, with 3 × 500 tons/day + 3 × 500 tons/day + 2 × 750 tons/day of Mitsubishi-MARTIN reverse-acting mechanical grate furnaces from Japan.•National AAA Level Waste-to-Energy Project.•Waste-to-Energy Project recommended by four ministries, including the Ministry of Housing and Construction, for reaching international advanced level.•Excellent demonstration project of urban domestic waste treatment in Guangdong Province.•Excellent environmental protection demonstration project in Guangdong Province.•Exterior design with the concept of diamond carbon molecular structure.