Energy audit is a study to establish the quantity and cost of each form of energy input to a building, site or organization over a given period. This could include evaluation of the end use and would include any on-site generation.
Energy survey is a technical investigation of the control and flow of energy in a site, building or process. It should aim to identify cost-effective energy saving measures.
Energy saving can be obtained from the following:
- Building construction facade, wall and roof
- Mechanical and electrical installations
- Operation of M&E
- Maintenance method