|Energy consumption, savings and budgets need to be expressed in terms that the accounts function can recognise and deal with.
Weekly data collection gives faster feedback to production departments on how to improve. For plastics processing, it is best to use ‘kg’ as a reference for the production volume but it is also possible to use ‘parts’ or any other convenient measure of production provided the product mix doesn’t vary greatly. Recording kWh/kg as a process efficiency measure on a monthly basis will lead to inaccurate conclusions due to the effect of production volume changes.
The PCL can also be used to provide a model for energy budgeting. Use the forecast sales volume to produce a forecast production volume (in kg) and use the PCL to predict the energy usage. This links energy use directly to the sales budget and to the accounting system. Integrating energy use into the accounting system is a vital element of controlling energy costs.
The PCL can be used to assess a site’s performance:
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