The deregulation of the energy markets, the development of renewable technologies and the prosumer economy have significantly increased the competition and have caused the emergence of new actors on the market. Unlike most other customer engagement software, Lerta achieves high levels of detail and personalization of recommendations and messages through the breakdown of energy consumption of individual appliances (how much energy was consumed on a dishwasher, heating, air conditioning, etc.) based on a single measuring point (Intelligent counter).