System and method for thermoregulating a swimming pool

A system including a heat production unit for heating water of a pool, an electrical connection, a photovoltaic and/or wind-powered renewable electricity generator, the system configured to switch between a mains mode and a renewable mode, a temperature sensor, and a control unit. When the system is in renewable mode and the current temperature is less than a predetermined maximum temperature, the unit controls the heat production unit to heat the water. When the system is in mains mode and the current temperature is less than a predetermined minimum temperature, the unit controls the heat production unit to heat the water. When the system is in renewable mode and the current temperature falls below the minimum temperature, the unit switches the system to mains mode. When the system is in mains mode and the current temperature rises above the minimum temperature, the unit switches the system to renewable mode.