Audits according to old standard possible until August 2020
Of course, many companies currently have other topics on their agenda than the transition to ISO 50001:2018. This is why the International Accreditation Forum (IAF) has extended the transition period to 20th February 2022. This means, that it is possible to conduct audits based on the old standard (ISO 50001:2011) until the 20th August 2020. The original deadline was 20th February 2020. Whether this extension of the deadline will really help companies, is questionable. Most of the audits were postponed due to the coronavirus pandemic and can only be completed after 20th August anyway.
One sticking point: the KPIs
What changes will the transition to the new standard bring for the companies? In this blog post, I would like to report my personal experiences that I have gained during audits and those that I have exchangedwith my colleagues. One of my favourite topics in connection with the revision is the energy performance improvement. ISO 50001 requires that measurable results of energy efficiency or energy consumption in relation to energy use must be available in comparison to the energy baseline. Continuous improvement must be demonstrated by means of suitable energy performance indicators (EnPI) – and this is often the difficulty.
Not every KPI is an EnPI. The “Energy efficiency and energy management” Working Committee NA 172-00-09 AA has published Explanations on some issues of the new standard (in German) and dealt with the topic of EnPIs and energy performance improvement amongst other things. The identification of SEUs (significant energy uses), decrease in energy performance non-achievement of energy targets and the review of energy performance improvements, including the installation of cogeneration plants, are also examined in more detail. For companies that still have the audit ahead of them, this is certainly helpful reading. Accordingly, KPIs are only considered EnPIs if they are not distorted by significant influencing variables and are suitable for showing the actual energy performance. Furthermore, the text also clearly confirms that at least one EnPI is required for each SEU.
Regression analysis under discussion
The ISO 50006 guideline provides further possible approaches for the definition and quantification of relevant variables. The easiest way to determine the relevance of the relationship between energy consumption and a variable – for example temperature or production quantity – is to create a corresponding X-Y diagram including a trendline. In practice, this is unfortunately not always so easy to implement, as several variables may have an influence on energy consumption. The standard also mentions statistical models to show the relationship between energy consumption and relevant variables using linear or non-linear regressions.
Regression analysis is currently a hot topic, although there is often a lot of uncertainty and, logically, fear involved. Certainly the topic is not an easy one, but neither was the – implementation of ISO 50001 or its revision.
Gain insight step by step – and leverage savings potential
With this blog post, I would like to encourage you to embrace the topic and not to be put off. Rome was certainly not built in a day, and in the course of the analysis you will notice that some energy data or measurements are “missing”. This is quite normal and must be dealt with accordingly.
My experience has shown – and also I am still learning – that there often is more available data on the production side than can actually be processed in a first step. Issues such as interfaces or data quality will inevitably crop up as well – not to mention the Damoclean threat of resources.
Project Manager Energy Management
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