energy audit
inspection, survey and analysis of energy flows for energy conservation in a building, process or system to reduce the amount of energy input into the system
en-US/ˈɛnɚd͡ʒi ˈɑdɪt/
en-GB/ˈɛnəd͡ʒɪ ˈɔːdɪt/
inspection, survey and analysis of energy flows for energy conservation in a building, process or system to reduce the amount of energy input into the system