METHOD AND ENERGY MANAGEMENT SYSTEM FOR OPTIMAL USE OF SOLAR ENERGY

The present invention provides a method for optimal use of solar energy in a building. The method comprises measuring the amount of local solar energy generation, monitoring energy consumption in the building, and monitoring the difference between the energy consumption and the generated solar energy, resulting in the available energy level (EA). The method furthermore comprises, upon monitoring that the available energy level (EA) is below a predetermined threshold (ETH) for at least a predetermined time duration (TSET), sending a signal from the gateway to a first electric or electronic appliance for activating the first electric or electronic appliance, the predetermined threshold (ETH) and the predetermined time duration (TSET) being programmed in the gateway. Further, the present invention also provides an energy management system for controlling solar energy usage of at least one electric or electronic appliance in a building.