This section is shown in Figure 3.1.3.
The firm must identify the energy source which crosses the documented boundary. According to SEP requirements (not required by the ISO 50001), industries must account for 95% of its energy sources. The energy consumption data for each energy source must be collected for the past and present usage. Other important information to be gathered involve collection of utility bills, utility tariffs, production data, weather data, operating hours for each equipment, equipment rating. The data should be gathered from a genuine source with calibration certification. The energy usage must then be roughly analyzed with respect to the production quantity and the weather data and hence future energy requirements must be roughly estimated. From the energy bills, operating hours and the rating of equipment average utilization and load factor must be estimated. Using the above data a Pareto chart can be made which will show the energy consumed by individual equipment in the process. Figure 3.1.4 shows the first part of energy review.