607GWh
renewable energy produced
equivalent to the consumption
of 182 thousand families
-16%
carbon footprint
for energy production compared
to 2015, aiming at -23% by 2022
2.3
million
tons of greenhouse gas avoided
Thermal energy produced
MWh 2016 2017 2018
Waste-to-energy plants (51% renewable) 62,463 79,783 71,231
Geothermics 71,733 63,535 75,382
Combustion of puification plant biogas 4,294 5,985 6,808
Total renewable sources 138,490 149,304 153,422
Cogeneration 174,272 179,250 172,721
Cogeneration operated as a service 153,222 80,873 81,004
Total cogeneration 327,494 260,123 253,25
Thermoelectric power stations 231,607 216,055 280,361
Waste-to-energy plants (49% non-renewable) 60,013 76,655 68,438
Total traditional sources 291,620 292,710 348,799
Total 757,604 702,136 755,949

 

Thermal energy produced from renewable sources increased by 3% in 2018 following an increase in the energy from geothermal sources (over 11,800 MWh compared to 2017, +16%). The share of energy produced has decreased: from cogeneration (-4%) – due to the lower number of hours of operation of the Imola Casalegno plant as mentioned above – and from the waste-to-energy plants (-11%).

Total net thermal energy produced by the Group’s plants increased by 8%, mainly due to the increase in production from thermal power stations (+64 thousand MWh).

Thermal energy produced from renewable sources was 20.3% of the total in 2018, slightly down compared with 2017, due to the lower production of total energy by the waste-to-energy plants, with consequences on the renewable share of this source. This reduction is only partly offset by the already-mentioned increase in the production of geothermal energy. 34% generated using cogeneration, a high energy efficiency system. Together, the two categories account for 54% of the electricity produced. The energy recovered from waste-to-energy transformation for the share exceeding 51% is 9.1%.