Close up of woman with app on mobile phone to measure household energy efficiency at home - shot in slow motion

woman app energy efficiency energy efficient meter smart appliance smart device smart technology mobile mobile phone phone cell cell phone smart meter technology gas electricity fuel indoors at home power energy consumption the internet r3d shot on red slow motion handheld connected saving money saving energy saving electricity saving gas reading bills the environment green issues monitoring display usage cost of living price women female one person person people close up focus on foreground