Electricity consumption is constantly increasing due to the rapid growth of the population and economy. Technologies are generally developed on the generation side to balance increased energy consumption and flex power systems accordingly. However, in recent years, there has been an increase in research on power systems flexibility on the consumption side, especially by the prosumers (electricity generating and consuming customers). In addition to the increase in energy consumption, increasing energy costs cause consumers to do these researches. Electricity consumers are turning into economically motivated “prosumers” who can not only consume electricity but also generate and store electricity. In this study, a method proposal will be made for drinking water suppliers to switch to the producer-consumer position. This study proposes a method for drinking water suppliers, especially those that consume electrical energy to move into the prosumer position. Afterwards, an energy management system design that will manage the consumption and production balance for these actors, reduce energy consumption and reduce maintenance costs will be proposed with the main lines.