|thousands of tonnes||2015||2016||2017|
|Waste-to-energy plants and biomass plants||1,390.3||1,336.3||1,305.4|
|Compost and stabilization plants||455.3||388.2||379.4|
|Stabilization, and chemical and physical treatment||1,141.6||1,154.2||1,000.5|
|Third party plants/Other plants||1,887.2||2,675.8||2,792.8|
The data refer to plant inflow waste. Duplication may therefore be included. Some of the waste treated in selection plants, for example, may be disposed of in landfills following selection. The outgoing waste from plants, which has therefore been included among the final-use plants, was subtracted from the quantities treated in the separation plants.
Waste treatment is slightly down, by 1.0%, compared to 2016. As far as landfills are concerned, the increase in quantities is due to the expansion of plant availability in the Ravenna areas, as a result of the permits we obtained. The reduction in waste treated in the waste-to-energy plants is mainly due to the different scheduling of plant shutdowns and scheduled maintenance. The decrease in quantities in sorting plants is mainly due to a different classification of some plants as inerting and chemical-physical plants. The decrease in quantities for the inerting and chemical-physical plants is due to the reduction in landfill leachates due to the lower rainfall and to a different representation of some plants in this category (as mentioned above). Lastly, the third-party plants/other plants sector benefits from the acquisitions of the Aliplast Group and of the plants branch of Teseco Srl.
In 2017, the Group’s landfills and waste-to-energy plants always complied with the quantitative limits on incoming waste set by the individual Integrated Environmental Authorizations for each plant.
|Bologna (FEA) waste-to-energy plant||93%||93%||93%|
|Ferrara waste-to-energy plant||95%||97%||98%|
|Forlì waste-to-energy plant||87%||95%||94%|
|Modena waste-to-energy plant||95%||94%||95%|
|Ravenna waste-to-energy plant||100%||100%||98%|
|Rimini waste-to-energy plant||99%||100%||99%|
|Pozzilli waste-to-energy plant||100%||98%||95%|
|Faenza (Enomondo) waste-to-energy plant||93%||100%||100%|
|Weighted average on thermal power||95%||97%||96%|
Given that in 2017 the waste-to-energy plants indicated in the table treated quantities of waste substantially in line with the authorized quantities, and given the calorific value of this waste, the average percentage of the thermal capacity was 96%. This means that in 2017 the plants were used at 96% of their potential.