Incluye resumen ejecutivo. Be-Home is a start-up that aims to address the increase in electricity prices in domestic markets. To do so, it proposes the use of electric car batteries as household power sources at times when electricity is more expensive, with a modern system of bi-directional chargers. In addition, and in order to make a useful and efficient management, and to adapt to the consumer's behaviour, an application will be developed for which the user will pay a monthly fee that will allow him to reduce the monthly electricity tariff significantly.