Consumption of materials
[GRI - 103-3],
[GRI - 301-1],
[GRI - 301-2],
The main materials used in production processes differ according to the business sector. For the Companies in the Environmental Business, the most important resources include incoming waste for the production of compost and electricity (waste-to-energy from pulper waste and SRF); Thermoelectric plants, managed by Acea Produzione, use fossil fuels (natural gas and diesel) to produce electricity. For the electricity distribution process, Areti uses the gas sulphur hexafluoride (SF6) in medium and high-voltage plants for its specific electrical and thermal insulation properties. The Companies in the water segment, use the chemical products required for process management, such as reactants for drinking water processing, the disinfection and treatment of wastewater. Finally, Acea Energia as well as the structures managing commercial activity for the Water Companies, whilst all committed to digitalisation of processes, all use paper for customer invoicing. Please see Table no. 64 and the Environmental Accounts for details of resources used by each area.
Table no. 64 – Type and consumption of materials by the main Group Companies (2021-2023)
| materials | u.m. | 2021 | 2022 | 2023 |
|---|---|---|---|---|
| incoming waste for composting and landfill | t |
249,867 |
556,003 |
637,020 |
| pulper | t |
99,730 |
97,796 |
82,217 |
| SRF | t |
307,391 |
289,550 |
294,174 |
| methane | Sm3 x 1.000 |
23,912 |
24,131 |
22,667 |
| diesel fuel | l |
646,730 |
883,290 |
260,756 |
| SF6 | t |
22.9 |
22.8 |
23.0 |
| various chemicals of water companies | t |
22,995 |
21,976 |
19,665 |
| paper | t |
341 |
320 |
312 |
Note: data on incoming waste includes waste at the Orvieto Ambiente landfill, waste entering the Deco and Ecologica Sangro landfills (both since 2022), and waste processed for the production of compost (sludge, green, OFMSW and other agrifood waste). Pulper and SRF for waste-to-energy are resources with a renewable component linked to the biodegradable fraction of the waste. In 2023, the renewable and biodegradable portions of pulper waste and SRF were respectively 44% and 47%. The net decrease in diesel consumption in 2023 is attributable to the Montemartini power station coming into operation. The SF6 data refer the total used Areti and Acea Produzione; data on paper use is associated with invoicing activities of the companies Acea Energia, Acea Ato 2, Acea Ato 5, Gori, AdF and Gesesa. Some values for the previous two-year period have been adjusted for consolidation.