Sustainability indexes
The company's performance in social, environmental and good governance issues has enabled it to take leading positions in the main sustainability indices. Our inclusion in these indices highlights the efforts made in terms of corporate responsibility and information transparency, and has led us to receive external recognition for our positive performance in these areas.
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| Logo | Indices | Evaluation | Year included |
| Dow Jones Sustainability Indexes | Once again a world leader in the Gas Utilities sector in 2019, the third year in a row | 2004 | |
| FTSE4Good | Once again a world leader in the Multiutilities sector for the second year in a row | 2001 | |
| Euronext Vigeo World 120 Euronext Vigeo Europe 120 Euronext Vigeo Eurozone 120 | We maintained the score awarded by the agency Vigeo Eiris in 2018, which evaluates companies every two years | 2013 | |
| MSCI ESG Rating MSCI Global Climate Index MSCI ESG Leaders Index | We once again achieved the highest rating (AAA) | 2014 | |
| ESG Corporate Rating | In the top 20% of the sector | 2014 | |
| ESG Rating | One of the top 5 utilities companies evaluated | 2017 | |
| ESG Corporate Rating | A world leader with the top rating thanks to its actions to combat climate change | 2009 |