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District Heating

Policy and sustainability plan

Circular economy


Smartness in networks and services

People innovation

District Heating

To help reduce the environmental impact of the cities, paying close attention to air quality, implementing district heating and district cooling

KPI 2017 2018 2023 plan objective
Volumes served by district heating and district cooling (Mm3) 108 110 118
NOx avoided thanks to the extension of district heating (t/year) -138 -139 -260
CO2  avoided thanks to the extension of district heating (t/year) -181,136 -211,197 -350,000
Finalization of the decarbonisation project of the Brescia district heating system (105,000 tonnes of CO2 savings) - - start-up

Sustainable development goal


Make cities inclusive, safe, resilient and sustainable


Take urgent action to combat climate change and its impacts

Material issues

2018 performance


GW of electric capacity installed


MWt of installed thermal energy capacity in the waste-to-energy plants



MWe of installed electricity capacity in the waste-to-energy plants



MW installed photovoltaic capacity purchase of new systems (+65 GWh of annual production)



km of water supply replaced


Elecricity generated by type of source (2018)

* For non-hazardous waste, a renewable fraction of 51% was assumed (ref. Decree of the Ministry of Economic Development of December 18, 2008). As a result, the non-renewable fraction considered was 49%.


  • – Numerous activities for the monitoring and safety of dams.
  • Completed the activities of flexibility of the CCGT of Sermide and Ponti sul Mincio and started the process for the CCGT of Cassano.
  • 77% of Milan's electricity distribution network joints replaced to improve resilience.
  • IA system for the efficiency of gas preheating activities has been implemented in order to reduce gas consumption. –The first 30 km of the sewerage system for connection to the new Valtrompia purifier have been built.
  • A2A was awarded the tender for the gas distribution of te Municipality of Milan, investments in energy efficiency and modernization of networks.
  • Work on the new Nuvolera purification plant has been completed and will come into operation in 2019.
  • The design phase for the thermal storage tanks for district heating in Brescia has been completed.

2018 performance


CO2 emissions - Scope 1 - compared to 2017 (amounted to approximately 7,5 million tonnes)



the Group emission factor (equal to 380 g/kWh) compared to 2017



million tonnes of CO2 avoided thanks to the technologies used to produce energy



Group plants are subject to the Emissions Trading Scheme


Avoided emissions of CO2 and energy savings in energy processes


  • –The exit route from the use of coal in the city of Brescia has been started, thanks to numerous interventations, which will make it possible to start the first coal-free thermas season in 2022
  • 2 million tonnes of CO2 avoided thanks to the ESCO activities of Group companies
  • A2A district heating system permitted to avoid more than 210 thousand tonnes of CO2 in 2018, thanks to the elimination of individual private boilers

Discover the other actions of decarbonisation