The group's energy consuption

The Group's energy consumption

Total direct and indirect energy consumption amounted to about 12,300 TJ, an increase of about 2% compared to 2017. The increase was due to the increase in direct consumption (Table no. 58) – which involves the use of primary sources for the operation of the production system – in particular the energy produced by the hydroelectric power plants, the CAR power plant in Tor di Valle and, to a lesser extent, also by the waste-to-energy plants, almost entirely offset by the decrease in indirect consumption, which includes the losses that occur in the Rome electrical grid, attributable to the transformation and transport phases (Table no. 59). The latter, in fact, have fallen by about 5%, thanks mainly to lower consumption of public lighting due to the numerous replacements of traditional lamps with LED systems, but also thanks to a slight decrease in technical losses of the grid (-3%) and a decrease in global electricity consumption for the distribution of potable/non-potable water.

It should also be pointed out that, for the second year running, the electricity consumption of the main companies, and in particular consumption linked to waste management plants, the distribution of drinking and non-drinking water, purification and consumption for the work sites, for a total of approximately 422,000 GWh, was certified as coming from renewable sources (certification by means of the Guarantees of Origin - GOs). (Table no. 59).
Trends in energy consumption intensity indices are shown in Table no. 60.

TABLE NO. 58 - DIRECT ENERGY CONSUMPTION OF THE MAIN COMPANIES IN THE GROUP (2016-2018)

(*) The figures for diesel consumption for road transport in 2017 and 2018 include Aquaser heavy vehicles
NB: The energy produced by the Group plants and fed into the network is illustrated in the Environmental Accounts (Products - Energy Segment).

TABLE NO. 59 - INDIRECT ENERGY CONSUMPTION OF THE MAIN COMPANIES IN THE GROUP (2016-2018)

Table NO. 60 - ENERGY INTENSITY INDICES (2016-2018)

Energy consuption outside of the group

Since 2015, Acea has been monitoring energy consumption outside the Group along the supply chain using specific questionnaires. In December 2018 the questionnaire was sent to more than 100 suppliers, the most representative in relation to the orders value for the year. Thanks to the results from 37 of those contacted (equal to 29% of the total Acea expenditure for the procurement of goods/services and works), their total energy consumption was estimated at approximately 318,676 GJ.