The final stage of the Plan-Do-Check-Act cycle involves reviewing the overall performance and the results of the EnMS, and taking all the necessary actions to ensure the system’s effectiveness and adequacy.
This is the stage where the energy management loop closes. All lessons learned through the previous steps should be fed back into the process and proactively incorporated into new projects and initiatives.
There will be cases where significant input into the system will be required (for instance, from senior management) and particular actions will be needed to drive a step change in the EnMS. The outcome of the ‘Act’ step should include any top-line changes to the energy policy document, the key characteristics of measuring an organisation’s energy performance (such as EnPIs) and the targets and objectives of the energy management process.
Importantly, the energy management process does not end at the Act stage. After the lessons learned have been fed back into the energy policy and other documents, the cycle begins again with Planning. The cyclical nature of this process is important not only for making further improvements to energy performance, but also for maintaining the improvements already achieved.