6,502
people hired
thanks to the induced employment
generated by Hera in 2017
78
million euro
Investments in innovation and
digitalization. 13 projects in smart city,
circular economy and 4.0 utilities
75%
of reused soil
in projects implemented in 2016
and 2017

Emissions of nitrogen oxides and carbon dioxide from the 12 district heating plants, increased by 7.7% and 10.2% respectively compared to 2016, due to the higher production at the Barca plant in Bologna, which has been renovated and became operational again at the beginning of 2017.

In 2017, the district heating plants produced a total of 687 GWh of electricity and thermal energy, up 3.5% compared to 2016. Plant maintenance, production and network management optimization, as well as integrated management of the source portfolio, enabled savings of 3,588 toe, 10.6% more than in 2016. In one of the major systems such as Ferrara, for example, a 20% saving in terms of nitrogen oxides and tons of CO₂ emissions was achieved compared to 2016, as more use was made of WTE renewable energy sources rather than traditional boilers due to the upgrade measures on the exchange section within the WTE (installation of second exchanger, in collaboration with HeraTech s.r.l.).

The ratio between emissions and the energy produced provides a measure of specific emissions. In 2017, 179 grams of nitrogen oxides were emitted for each MWh of electricity generated (-4.1% compared to 2016) and 184 grams of carbon dioxide for each kWh (-0.4% compared to 2016).

Atmospheric emissions generated by district heating
t 2015 2016 2017
Nitrogen oxides 106.4 114.2 123.0

The data refer to the thermoelectric power and cogeneration stations that power district heating (source of emission factors for NOx: Corinair 2004 for boilers and data from manufacturers for cogenerators). Data does not include Imola’s power plant shown below.

Considering the concentrations of nitrogen oxides, carbon monoxide and particulates, the concentrations of the atmospheric emissions of the cogeneration plants for district heating were 55% of the limits set by the plant authorizations (67% of the limits for nitrogen oxides, 31% for carbon monoxide and 3.0% for particulate).

Atmospheric emissions generated by district heating (2017)
t Nitrogen oxides
Bologna 65.0
Ferrara 5.9
Forlì-Cesena 29.5
Imola-Faenza 2.2
Modena 19.0
Ravenna 1.3
Total 123.04

The data refer to the thermoelectric power and cogeneration stations that power district heating (source of emission factors for NOx: Corinair 2004 for boilers and data from manufacturers for cogenerators). Data does not include Imola’s power plant shown below.