Sustainability indicators

 2013 2012 Change 
ISO 14001-certified net efficient capacity (% of total)  94.0  92.6  1.4  1.5% 
Average efficiency of thermal plants (%)  39.8  39.9  (0.1)  -0.3% 
Total specific emissions of CO2 from net generation (gCO2/kWheq 391  418  (27)  -6.5% 
“Zero-emission” generation (% of total)  46.7  42.4  4.3  10.1% 
Injury frequency rate (1)  1.42  1.98  (0.56)  -28.3% 
Serious injury rate (2)  0.07  0.10  (0.03)  -30.0% 
Serious and fatal injuries at Enel  13  15  (2)  -13.3% 
Serious and fatal injuries at contractors  27  34  (7)  -20.6% 
Average hours of training per employee  39.8  44.8  (5.0)  -11.2% 
Verified violations of the Code of Ethics  27  41  (14)  -34.1% 
Enel Open Data

(1) The indicator is calculated as the ratio between the total number of injuries and the number of hours worked, in millions (INAIL standard).
(2) The indicator is calculated as the ratio between the number of days lost for injuries and the number of hours worked, in thousands (INAIL
standard).

The proportion of ISO 14001-compliant capacity was equal to 94.0% at December 31, 2013, an increase of 1.5% on the previous year. The rise reflects new certifications of the combined-cycle plant at Pego, the diesel plant on Ibiza, the combined-cycle plant at Marcinelle and new wind farms of Enel Green Power.

In 2013 the average efficiency of thermal plants was in line with that of the previous year.

The decrease in specific emissions of CO2 is attributable to increased renewables generation.

In 2013, 46.7% of Enel’s generation came from zero emissions resources, an increase of 10.1% on 2012. The increase is due both to the contingent improvement in water conditions in 2013 compared with 2012, with availability above the average for the last five years, and to the structural factor of the increase in renewables capacity during the year.

The 940 MW of new renewables capacity installed in 2013 confirm our commitment to expanding carbon-free generation, which will continue in the coming years.

The injury frequency and severity rates declined by 28.3% and 30.0% compared with 2012. The improvement is attributable to constant and intensive information, training and awareness-raising activities conducted in order to disseminate a culture of safety at all levels and to promote the adoption of safe behavior, as well as the ongoing implementation of measures to enhance workplace health and safety standards and management processes.

Serious and fatal injuries involving Enel personnel decreased by 13.3% compared with 2012, even though there were 6 fatal accidents involving Enel employees. Serious and fatal injuries involving the employees of contractors working for Enel fell by 20.6% compared with 2012, thanks to ongoing implementation of measures to enhance workplace health and safety in all stages of the tendering process.

The average hours of training per employee declined by 11.2% owing to the greater focus on specific segments of the workforce, although a number of large-scale projects were continued.

As regards the Code of Ethics, the number of reports received in 2013 was broadly in line with 2012, while verified violations declined.