energy auditnoun [ C ]
ukusENVIRONMENT, SOCIAL RESPONSIBILITYan examination of a building to find out how much energy is being used in it and if changes could be made in order to use less:
After a two-day energy audit of his factory, his $2.5 million business was declared "energy inefficient."
A home energy audit is the first step to assess how much energy your home consumes.