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CSR Ratings

Recognition for our lasting performance

Information relating to the labor, environmental and social aspects of Mersen’s business is verified by an independent third party, responsible for ascertaining that the pertinent CSR information has been disclosed and for verifying its accuracy. Full details are provided in the Group’s Universal Registration Document.

The efforts made by the Group over the last decade to formalize, improve and consolidate its approach to sustainable development have been recognized by several independent organizations.


In 2022, Mersen received a rating of AA (on a scale of AAA-CCC) in the MSCI ESG Ratings assessment. This is a further improvement to the previous ratings "A" in 2021 (from "B" to "AA" in 4 years). That places the Group within the top 3% of its company peers and top 4% of all French analyzed companies. 

The use by Mersen of any MSCI ESG research LLC or its affiliates (“MSCI”) data, and the use of MSCI logos, trademarks, service marks or index names herein, do not constitute a sponsorship, endorsement, recommendation, or promotion of Mersen by MSCI. MSCI services and data are the property of MSCI or its information providers and are provided “as-is” and without warranty. MSCI names and logos are trademarks or service marks of MSCI.

Mersen MSCI ESG Ratings assessment.


For the 2nd consecutive year, Mersen is awarded an EcoVadis golden medal for its commitment to sustainable development, with a score of 72/100.

The Group ranks among the top 3% companies in its sector assessed by EcoVadis.

Mersen Ecovadis Golden medal

Voluntary, transparent and recognized engagement

The Group reports to the Carbon Disclosure Project, a not-for-profit charity that measures the environmental performance of large companies and their strategy on climate change and water security on behalf of corporate investors with more than USD 106 trillion in assets.

More information: Mersen demonstrates environmental transparency by disclosing through CDP

Carbon Disclosure Project logo Mersen