Guidelines for Energy Checks and Analysis

Since 2012, energy specialists from ACWUA members attended regional workshops and seminars and they were exposed at the international water fairs IFAT in Munich and at Berlin Wasser to share experiences about solutions to enhance energy performance:

  • Enhance energy efficiency and energy use
  • Reduce energy consumption
  • Reduce energy bills of water/wastewater utilities , e.g. through flexible pumping hours 
  • Produce energy from renewable resources, e.g. wind, sun, biogas, hydropower etc.

Some selected papers and presentations are available from the section Regional seminars and conferences.

The following management instruments can be applied to save or to optimize energy in water and wastewater utilities:

  • Energy Management Systems (EnMS after ISO 50001) [see right column for more details]
  • Energy Checks: Assessment of the energetic inventory of components, installations or the whole infrastructure in relation to key performance indicators (e.g. DWA-A 216)
  • Energy Analysis: Detailed survey and evaluation of the past and present energy consumption, assessing the significant areas of use to prioritize optimization measures including considerations of cost efficiency (e.g. ISO 50001, or DWA)
  • Energy Audit: Systematic inspection and analysis of energy use and energy consumption of a site, building, system or organisation with the objective of identifying energy flows and the potential for energy efficiency improvements and reporting them (e.g. EN 16247).

The Task Force Energy Efficiency agreed to develop regional ACWUA «Guidelines for Energy Checks and Energy Analysis» [see right column for more details] and to get additional hands-on exposures on Energy Management Systems (EnMS) [see section«Library» for more details] applied in German water utilities.

A German consulting company with experience in developing such generic guidelines was engaged and delivered a final draft in October 2014 after a peer review with the Task Force members and German water-energy experts. These draft guidelines will be tested during December 2013-March 2015 in Tunisia and Morocco in water supply utilities.

It is planned to revise the guidelines and amend them with examples to guide the practitioners in ACWUA utilities to conduct energy checks and energy analysis. After another round of peer reviews, the final guidelines will be submitted in October 2015 to ACWUA for approval.

The file Introduction to the guidelines for energy checks and energy analysis [see right column] gives an overview on the process, the scope of the guidelines, the general approach for an examination of energy situation, the stepwise approach to improve energy efficiency, required internal and external expertise, and the operation plan for energy checks.