EXCELLENCE in energy management is very important for the energy efficiency movement globally. The closely watched Energy Efficiency 2017 report produced by the International Energy Agency (IEA) says: "The application of energy management systems, which provide a structure to monitor energy consumption and identify opportunities to improve efficiency, is growing, driven by policy and financial incentives.
"The number of certifications for ISO 50001 - a global standard for energy management developed by the International Organization for Standardization in 2011 - grew to nearly 12,000 in 2015, 85 per cent of which were in Europe.
"Early evidence suggests that companies that are implementing ISO 50001 or similar standards can achieve annual energy and financial savings of over 10 per cent and other benefits including improved management of other production inputs," the report adds.
This year's winner of the EENP award for Excellence in Energy Management, BASF South East Asia, attained the ISO 50001 certification in 2017. Another recipient for Best Practices (Honorable Mention) - GSK, also received the Excellence in Energy Management award in 2011.
This year's recipient of the Best Practices award, Globalfoundries Singapore Pte Ltd, was the recipient of the Excellence in Energy Management award in 2013. This shows that continual progress is achievable with structured energy management.
"GFS is very pleased to once again be recognised with the EENP Award as the company completed another impressive energy efficient project. The GFS team challenged the conventional manufacturing process method all these years and adopted a positive change and a shift in paradigm to invoke disruptive and innovative change," says K C Ang, senior vice president & general manager of Globalfoundries Singapore Pte Ltd (GFS).
The company's award winning project involves switching from hot to cold water for post chemical de-ionised (DI) water rinse, which is a low carbon innovative process. In the wafer fabrication process, chemicals were used extensively to clean wafers. Traditionally, hot DI water generated by diesel fired boilers was used to rinse off the chemicals. This resulted in high diesel consumption.
To reduce diesel consumption, Globalfoundries explored the use of cold DI water for rinsing. Through rigorous engineering evaluation, chemical rinsing with cold DI water proved to be equally effective and efficient without affecting the functionality and reliability of the end products. Hence, the company implemented the process change to switch from using hot DI water to cold DI water. With the use of cold DI water, the hot DI water use was significantly reduced.
This resulted in the saving in the use of energy as well as the diesel consumption of 6,821 litres of diesel fired per day, achieved an annual energy reduction of 24,897 MWh which lead to an annual carbon emission reduction of 6,875 tonnes CO2 equivalent. As a result of these efforts, the company was able to decommission the diesel fired boilers in December last year.