Tetsuya Maekawa served JAESCO, which just celebrated its 20th anniversary in May 2019, as one of the board members for several years, and now he is playing his role of the head of the International Affairs Committee of JAESCO. He joined TEPCO in 1979, since then he has been working in the demand side of electricity, or in the field of energy efficiency. Based on his technical background of building engineering, he joined various projects to promote the energy efficiency of buildings.