Lancey Energy Storage designs and produces Lancey, the first smart electric heater equipped with a battery and a native energy management system (EMS). By fine tuning heating to user's needs and storing cheap off peak electricity to power the radiator during peak periods, it is up to 50% cheaper to run than other electric space heaters. Furthermore, it is beneficial to the environment. Thanks to its battery that charges during off peak hours to power the radiator during peak hours, Lancey heater almost never consumes electricity during peak demand, when its production releases more CO2. When a rooftop photovoltaic installation is installed, the EMS and battery of Lancey heaters enable to maximize its auto-consumption rate. Furthermore, Lancey heater’s battery can be used to provide flexibility services to the electricity network, that are increasingly needed with the development of renewable energies.