This proposal aims to carry out works for the energy upgrade of the AETHLION indoor gym of the Municipality of Andravida Kyllini with the aim of reducing its energy requirements and saving energy The proposed act will contribute to the improvement of the energy efficiency of the building and the use of renewable energy sources The energy upgrade of the AETHLION indoor gym will be done to reduce the energy consumption required for its proper operation will consolidate the environmental consciousness of the citizens and will reduce the cost of its operation