Energy consumption

Energy consumption is an environmental aspect that is assessed and measured at all Ansaldo STS offices and production sites when the environmental aspects of work sites and the construction of civil and technological works are analyzed.

To meet its production and operating requirements in 2016, the group consumed a total17 of 121,929.5 GJ of energy. Compared to 2015, total consumption dropped by of 2,325 GJ (-1.9%), and this concerned both the production sites for 1,413 GJ (-4.3%) and the office sites for 912 GJ (-1.0%).

The consumption analysis in absolute value by energy source compared to 2015 reveals:

  • an Electrical Energy consumption reduction of 475 GJ (-0.6%) as the consequence of the 1,732 GJ decrease (-6.0%) recorded at the production sites and of the 1,257.3 increase (+2.2%) at the office sites, 37% of which is due to including the Spanish sites in the scope of the report; 
  • a reduction of Natural Gas consumption of 1,769 GJ (-6.6%), mainly due to its decrease recorded at the office sites (-8.4%);
  • a reduction of Diesel consumption of 807 GJ (-11.2%), also in this case due to its decrease recorded at the office sites (-995.6 GJ, equal to -13.9%); 
  • a reduction of Petrol and LPG consumption for haulage of 220 GJ (-8.5%); 
  • an increase in district heating use of 946.4 GJ (+39.1%).

The energy consumption trend of the three-year period 2014-16 at the production and office sites is illustrated in the following table.

                                           PRODUCTION SITES    OFFICE SITES  
Electrical energy (GJ) 29,2612 28,8343 27,1022 60,2918 56,3070 57,5643
Natural gas (GJ) 3,8673 3,7112 3,8889 16,8741 23,1382 21,1913
Diesel (GJ) 429 429 2.315 22,2914 7,1545 6,1589
District heating (GJ) - - - 2,9596 2,4176 3,3639
Petrol and LPG (GJ) 3.795 3.897 3.423 4.306 2,2637 2,0862
TOTAL [GJ] 33,5509 32,97811 31,5648 102,8475 91,2810 90,3646

In absolute terms, about 74% of total energy consumption is due to the 16 office sites and 26% to the three production sites. The percentage breakdown of consumption by type is shown in the chart below.

In 2016, the Energy intensity performance indicator showed a substantial reduction at production sites (-10.7%) due to the combined effect of the increase in hours worked (+7.2%) and the decrease in consumption (-4.3%). The indicator increased slightly (+1.8%) at the office sites. Both consumption (-1.0%) and hours worked (-2.7%) were down.

Considering Electrical Energy consumption only, the Electrical energy consumption per hour worked performance indicator in 2016 revealed a 12.3% reduction at the production sites due to the combined effect of both lower consumption (-6.0%) and the increase in hours worked (+7.2%) and a 5.1% increase at the office sites because of higher consumption (+2.2%) and fewer hours worked (-2.7%).

Within the overall reporting scope, the Energy intensity of buildings indicator, calculated on the consumption of electricity and natural gas for heating and district heating, showed a reduction at production sites (-4.8%) mostly due to the lower consumption of electrical energy (-6.0%), and an increase at the office sites (+6.7%).


Energy efficiency of Italian sites

Ansaldo STS concluded the project to reduce its energy use at its Italian sites in Genoa, Piossasco (Turin), Naples and Tito Scalo (Potenza) by 20% in 2016. The project was launched in 2010 with an analysis of energy consumption (electrical energy and gas for heating) over recent years and a future projection that showed an increase. As a result, the need arose to contain and reduce consumption and, consequently, reduce GHG emissions (CO2 in particular).

The types of steps to be taken as part of this project provide, for the Piossasco site, the replacement of much of the energy infrastructure which is obsolete (pipes, valves, lighting, etc.), while for the Genoa, Tito and Naples sites, the approach will focus more on rationalizing consumption (less lighting in offices, including when personnel are not present, turning off PCs and displays when they are not in use, etc.) on the basis of actual needs, with the replacement of certain plants with energy-saving oriented systems only where they are obsolete.

A total reduction in energy consumption at the Italian sites of 8.7% was reported between 2013 and 2016.

ITALIAN SITES2013201620132016201320162013201613/1620132016
Tito Scalo 6,670 5,691 2,984 2,430 - - 9,654 8,121 -15.9% 115 097
Piossasco 5,921 5,793 13,267 11,150 - - 19,188 16,943 -11.7% 085 075
Genoa 11,540 10,134 - - 2,424 2,880 13,964 13,014 -6.8% 082 077
Naples 7,852 8,073 2,138 2,054 - - 9,990 10,127 1.4% 103 105
TOTAL 31,983 29,690 18,390 15,634 2,424 2,880 52,796 48,204 -8.7% 092 084

Renewable energies

Ansaldo STS again acquired electrical energy consumption certificates for its Italian sites under the Renewable Energy Certificate System (RECS) in 2016. These certificates represent 1 MWh, and attest to the use of energy from renewable sources, which include, as defined by EU directive no. 2009/28: wind, solar, aerothermal, geothermal, ocean, hydraulic, waste-to-energy, landfill gas, residual gas from purification processes and biogas.

By acquiring and subsequently cancelling the certificates (the latter entails the withdrawal of the certificate from the market), Ansaldo STS demonstrates its commitment to environmental sustainability through its willingness to pay the positive difference with the price of electricity from conventional sources.

Since 2014, the Solna site has adopted an energy source mix that is totally renewable (wind power, hydro-electric and waste-to-energy).

Energy from renewable sources (all four Italian office sites + the Swedish office site in Solna since 2014) 6,332,424 6,399,993 6,513,346
% renewable sources of total 25.5% 27.1% 27.7%