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Environmental, social and governance indicators

201820172018-2017
Emission free production (% of total)49.143.35.813.4%
Total specific emissions of CO2 from net production (kg CO2/kWheq) (1)0.3690.411(0.042)-10.2%
Average thermal generation yield (%) (2)40.140.7(0.6)1.5%
Specific emissions of SO2 (g/kWheq) (1)0.750.84(0.09)-10.7%
Specific emissions of NOx (g/kWheq) (1)0.720.79(0.07)-8.9%
Specific emissions of dust (g/kWheq) (1)0.170.27(0.10)-37.0%
ISO 14001-certified net efficient capacity (% of total)9999--
Enel injury frequency rate (3)0.9431.199(0.256)-21.4%
Serious and fatal injuries at Enel (no.) (4)76116.7%
Serious and fatal injuries at contractors (no.) (4)1720(3)-15.0%
Verified violations of the Code of Ethics (no.) (5)3031(1)-3.2%

(1) Specific emissions are calculated as total emissions from simple thermal generation and co-generation of electricity and heat as a ratio of total renewables generation, nuclear generation, simple thermal generation and co-generation of electricity and heat (including the contribution of heat in MWh equivalent).
(2) Percentages calculated using a new method that does not include oil and gas plants in Italy that are in the process of decommissioning or are marginal among thermal plants. The figures also do not consider consumption and generation for co-generation at Russian thermal plants. The average generation yield is calculated on the basis of the number of plants and weighted by output.
(3) The indicator is calculated as the ratio between the total number of injuries and the number of hours worked, in millions.
(4) Serious injury: injuries with an initial prognosis, as reported on the medical certificate issued, of greater than 30 days, or with a confidential prognosis until the actual prognosis is released, or with an unknown prognosis that, based on an initial assessment by the company concerned, is expected to exceed 30 days. Once the official prognosis is released, the related injury is considered serious only if said prognosis exceeds 30 days. Should a confidential prognosis never be released or an unknown prognosis remain unknown, within 30 days of the event, the injury is to be deemed serious.
(5) The analysis of reports received in 2017 was completed in 2018. For that reason, the number of verified violations for 2017 was restated from 27 to 31.

The Enel Group has an environmental management system that covers nearly all of its operations (generation plants, grids, services, properties, sales, etc.). Preparatory activities for the certification of new plants and installations have begun.

In line with the goal of decarbonization by 2050, the new installed renewables capacity amounted to about 2.7 GW, mainly attributable to wind plants in the United States and solar plants in Mexico. Emission free production in 2018 amounted to around 49% of total generation, an increase compared with 2017 that was due to greater generation from hydroelectric sources thanks to an increase in water availability. Specific CO2 emissions declined by 10% from the previous year, going from 0.411 to 0.369 kg/kWheq, reflecting a reduction in absolute emissions as a result of a decline in thermal generation. The values for other specific atmospheric emissions decreased compared with 2017 by about 11% for SO2 and 9% for NOx , as well as dust (-37% on 2017) to thanks efficiency enhancement works at the Reftinskaya plant in Russia.

The averge thermal generation yield was virtually unchanged compared with 2017. Injury frequency rate for employees of the Enel Group was equal to 0.943 (down 21% on 2017). In 2018 there was 1 fatal accident and 6 serious accidents involving Enel personnel and 7a fatal accidents4 and 10 serious accidents involving the employees of contractors working for Enel. Reports of violations of the Code of Ethics numbered 144 last year. Following analysis, 30 have been classified as violations to date.