ESOS or ISO 50001?

John Mulholland

Phase 2 of ESOS is already underway (6 December 2015 to 5 December 2019). Some companies are considering using an Energy Management Systems (EnMS) certified to ISO 50001 as a route to compliance. To take this route certification needs to be held on the compliance date of 5th December 2019. This may seem some time away but in EnMS terms it is closer than you think.

There are 5 steps to achieving certification to ISO 50001:

Step 1 EnMS Gap Assessment (2 weeks)

This is a sensible idea to assess the current energy management practices against the requirements of ISO 50001.

Step 2 EnMS Building (6 to 8 weeks)

This is where a tailor-made EnMS is built and geared to your organisation.

Step 3 EnMS Population (5 to 10 weeks)

Here the EnMS is populated with data to demonstrate current practice and compliance. Any gaps identified in Step 1 should be addressed at this stage.

Step 4 EnMS Operation (26 to 52 weeks)

This is where the EnMS is run for 6 to 12 months with internal audits and at least one management review.

Step 5 EnMS Certification (10 weeks)

Here an accredited certification body will conduct Stages 1 and 2 certification. The two stages are usually separated by six weeks. Stage 1 is an assessment by the certification body to see if the EnMS is in a state of readiness. If Stage 2 is successful, certification is usually issued in about 4 weeks. Certification lasts for three years, subject to surveillance audits.

So if a company embarked on this process in January 2018 the timeline would be approximately:

Stage Completion Date
Step 1 EnMS Gap Analysis End of January 2018
Step 2 EnMS Building End of March 2018
Step 3 EnMS Population End of June 2018
Step 4 EnMS Operation (assume 9 months) End of March 2019
Step 5 Certification End of June 2019

So the whole process typically takes 18 months. Therefore in order to complete the journey and have certification by 5 December 2019, it is important to start the journey by May 2018.

Of course some originations will take longer or may complete the process faster depending on how well organised they are and current energy management practices.

So you have between now and end of May 2018 to make a decision.