STMicroelectronics - Switzerland

STMicroelectronics - Switzerland

Claim To Fame: 

ST is committed to reducing its energy consumption and associated carbon footprint through energy efficiency and conservation programs along with the purchase of CO2-free and renewable energies. ST carefully monitors and anticipates changes in the energy market to mitigate business exposure to climate change.

Organisation Type: 
Large Enterprise
Main benefits & Achieved Results : 

"Saving Energy at our sites"
Optimizing processes and replacing or upgrading equipment are important means of improving energy efficiency. Our energy teams are constantly analyzing options to implement energy-related upgrades or optimization to drive down usage.
A good example is the energy management efforts undertaken at ST Rousset (France), where the energy-saving activities implemented over the last five years have had an impressive result. While production has increased by 32%, absolute electricity consumption at the site has decreased by 2.3% and gas consumption by 15%. In 2016, ST Crolles (France) carried out a range of different actions. The 20 programs identified included an equipment retrofit, optimization of air conditioning, and the replacement of a preheat exchanger supplying ultra-pure water. This achieved a total electricity saving of 4.7GWh during the year.

"Monitoring usage"
We have put a rigorous and detailed monitoring in place to keep our energy consumption under control. Close analysis of energy usage in our processes and facilities highlights possible areas for improvement. It enables us to fine-tune settings and maximize energy efficiency by eradicating waste and delivering only what is needed precisely when it is needed. As an example, ST Crolles (France) signed a contract with its plant facilities services supplier with a commitment to saving energy. Through smart monitoring done remotely by the supplier, who provided real-time data analysis and decision-making, the site
has been able to identify opportunities to maximize equipment efficiency and to save 2.3GWh in 2016.

"Introducing new equipment"
When optimizing processes or upgrading equipment is not sufficient to reduce energy consumption, replacing old equipment is an alternative. For example, in our Muar site (Malaysia), the installation of a new, more efficient, and reliable consolidated cooling water system resulted in an annual energy reduction of 2.9MWh.

Presentation of the initiative: 

At ST, we minimize our energy consumption and associated carbon footprint by implementing energy-efficiency and conservation programs. We also maximize our purchase of CO2-free and renewable energies. In addition, we work with external stakeholders to carefully monitor and anticipate developments in the energy market and to mitigate business exposure to climate change.

For nearly 20 years, ST has been decreasing its energy usage, reducing its costs and gaining efficiency through continuous upgrades of its existing equipment and manufacturing processes. ST is committed to reducing its office-related energy consumption through improvements and installation of more efficient lighting, system controls, cleanroom heating, ventilation and air conditioning. All ST Front-end sites are certified ISO 500011 since 2013.ST sites also raise employee awareness and engagement through regular energy conservation campaigns and site events.

Commitments for the future & other relevant information: 

- Continually improve energy efficiency at equivalent production level (kWh per production unit) through process and facilities optimization, conservation and building design.

- Yearly increase by 10% the quantity of green energy used by the Company.

- By 2016, ensure that 90% of calls for tenders from US$200k include criteria on energy efficiency and use of CO2 emission-free and/or renewable energy regarding facilities and site services.

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