Energy Efficiency Analysis and Practical Saving Tips

Assessing energy efficiency starts with choosing indicators and understanding the data behind them. This article introduces Energy Efficiency Indicators, and suggests ways to organise data when investigating energy-saving opportunities in industry.

Questions to clarify

• Does the analysis cover the whole plant or a particular process?
• Do the energy and production figures cover the same reporting period?
• How have the product mix, shift pattern or downtime changed?
• Which data are directly measured and which are estimated?

Using the reference effectively

Start with a small scope for which reasonably complete data are available. Prepare a monitoring table and record operating conditions. When an indicator changes, investigate the reasons before concluding that equipment performance has improved or deteriorated.

List energy-saving ideas and screen them for feasibility, investment requirements and verification methods. Evaluate a measure's results only when suitable data are available from before and after implementation.

Reference document

The link below opens a document on energy efficiency indicators. Use it as a reference for developing an analytical approach; specific measures should be selected based on a survey of the facility.

• Guidance on energy efficiency applications