It involves a simple review of utility bills, a quick walk-through of the facility followed by interviews with facility personnel. This preliminary audit potentially helps in understanding some of the easily noticeable problems in the facility.
This analysis includes, in addition to the initial walk-through, a detailed energy analysis, solutions, and life cycle costs for each measure. It also covers potential changes to operation and maintenance procedures and a list of possible capital-intensive rules that require more analysis
This level involves large capital investment projects that require intensive data collection, measurements, energy modeling, and large-scale implementation. This analysis is typically for projects that involve long term implementation and detailed project life cycle requirements