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Sustainable Development Goal

Sustainably manage forests, combat desertification, halt and reverse land degradation, halt biodiversity loss


Circular Economy



Implement actions to reduce water consumption in capture and distribution processes, reduce water dispersion and improve the quality of water returned to the environment

KPI 2020 2022 2026 2030
Population equivalent served by treatment (M) 0.6 0.7 1.1 1.9

Performance 2020


renewable percentage (hydraulic, renewable fraction of waste, biogas, solar, wind) of the total of electricity produced 
(+ 6 p.p compared to 2019)


million of tonnes of waste treated in Group plants


smart water meter were installed by A2A Ciclo Idrico


incidents of high and critical severity monitored

Efficient management of Group infrastructures


  • Completed works on two new treatment plants in the Brescia municipalities: San Paolo and Offlaga (for a total of 14,000 equivalent inhabitants)
  • Start of the sites for the construction of the new plants for the treatment of OFMSW (Organic Fraction of Municipal Solid Waste) and the production of compost and biomethane at Lacchiarella (Mi) and Cavaglià (BI)
  • Acquisition of the Group's first wind farm (8,2 MW), located in Campania, and start of the procedures to authorize the installation of electrochemical storage systems for a portfolio of projects of around 60 MW to be built at sites it owns
  • A2A Calore e Servizi entered into an agreement with the REA DALMINE industrial plant, owned by Greenthesis Group, which provides for a 50% increase in the heat available in the district heating network of the city of Bergamo  
  • Completed, on the Milan electricity network, the plan to improve the resilience of electricity grids against the extreme events related to the climate change replacing more than 10,000 joints 

Performance 2020


million m3 of Group wastewater treatment capacity


controlls per million m3 of water supplied


samples taken (-16% compared to 2019)(*) 

(*) The reduction in the number of controls was due both to a decrease in the number of analyses carried out due to the Covid-19 emergency and to the elimination of some parameters no longer found in primary waters


parameters analyzed  (-22% compared to 2019)(*)

(*) The reduction in the number of controls was due both to a decrease in the number of analyses carried out due to the Covid-19 emergency and to the elimination of some parameters no longer found in primary waters

Purifcation performance

  2018 2019 2020
COD 94% 92% 90%
BOD 98% 97% 96%
Nitrogen 65% 68% 69%
Phosphor 79% 77% 74%



  • Completed work on the new treatment plant in the Brescia municipality of San Paolo, capable of serving 6,000 equivalent inhabitants
  • Completed work on the Offlaga treatment plants with a nominal capacity of 8,000 equivalent inhabitants
  • Upgraded the the San Gervasio treatment plant through the installation of a new modular treatment line with MBR technology with a capacity of 1,200 equivalent inhabitants
  • Start of work on the construction of the Valtrompia district treatment plant, which will make it possible to overcome the problem of European infringements for the municipalities in the area that are not covered by the treatment service

Performance 2020


sites analyzed


sites with potential interference with the system of protected areas


sites where it's possible to carry out an intervention because they correspond to areas subject to protection, of high ecological value and with the possibility of intervention to improve the ecosystems


  • Concluded the analyses of the potential interference of the A2A Group's activities with the system of protected areas, namely with sites belonging to the Natura 2000 Network, IBA (Important Bird and Biodiversity Area) areas
  • Developed a "relevance index" to measure the degree of potential interference that the activities could have on the ecosystems, due to the proximity and peculiarities of the habitats present in the protected areas


Group sites and activities with interference on protected areas

  number of directly interfering sites/networks activities performed interfering area surface/interfering network stretch length type of protected areas
Sites 4 hydroelectric production 1,005 km2 Natura 2000 network IBA National network (EUAP)
Networks 3 distribution of gas/electricity 289 km Natura 2000 network IBA National network (EUAP)




Our concept of sustainability

Find out about A2A Sustainability delving into
the different dimensions of our model