Samsung Semiconductor focuses on treating process gas and expanding
the use of renewable energy to
reduce carbon emissions at worksites. Each worksite estimates its annual greenhouse gas emissions, defines greenhouse gas mitigation tasks optimized to the manufacturing
process and develops and
implements reduction plans.

In 2020, Samsung Semiconductor mitigated approximately 7.091 million tons of greenhouse gas in total compared to the estimated emissions, thanks to 540 greenhouse gas
reduction projects, including
improving the process gas treatment facility efficiency, shifting to high-efficiency facilities and streamlining
the manufacturing processes. As a result, greenhouse gas emissions fell
by approximately 39%, compared to 2019.

To save electricity consumption,
we have been streamlining the manufacturing process, optimizing operations to reduce the number of main equipment testing, improving temperature conditions for auxiliary facilities and implementing high-efficiency facilities. For natural gas, we have been trying to use a lower amount of liquified natural gas (LNG) by recapturing waste heat with a cooling water system and heat exchangers, and adjusting air temperature and flow rate in outdoor air handling units.