Checks on Heating Systems and Mobility

Acea helps keep the level of emissions into city air under control both by checking civilian heating systems on behalf Municipality of Rome and through an efficient fleet of vehicles.

“Sanacaldaia” and “Caldaie sicure” Programmes

Acea Reti e Servizi Energetici SpA checks and inspects civilian heating systems on behalf Municipality of Rome to ensure they comply with legislation on limiting energy consumption.
According to current laws131, towns with over forty thousand inhabitants are obliged to check the effective maintenance and working conditions of heating systems in their territory.
These programmes are called Sanacaldaia (Healthy Boiler) and Caldaie Sicure (Safe Boilers): the former concerns Centralized heating systems exceeding 35 kW for heating uses and the latter concerns individual heating systems below 35 kW (so-called “independent” systems).
There are around 26,200 Centralized heating systems amounting to 8,566 MW, whereas “independent” heating systems in Rome amounted to around 632.000 with estimated power of around 6,000 MW. In view of the current trend not to install Centralized heating systems in new buildings, the number and figures concerning these have remained basically stable over the last few years whereas, although the number of independent systems is increasing, they however have little affect on the overall number of systems installed as they involve such small power levels.
An analysis of the fuels used in these systems illustrates that:

  • natural gas is used in 86% of systems exceeding 35 kW and in almost all independent systems (below 35 kW);
  • diesel counts for around 13% of fuel used in Centralized systems;
  • other fuels (mainly biodiesel, LPG, pellets) count for just 1% of the fuel used in Centralized systems. More specifically, LPG is more popular on the outskirts which is not served by the gas mains.

Chart 47 – DISTRIBUTION OF FUELS USED IN ROME (2009)

Chart 47 – DISTRIBUTION OF FUELS USED IN ROME (2009)

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131 Decree by the President of the Republic 412 from 1993 (amended through DPR 551/99, Legislative Decree 192/05 and Legislative Decree 311/06).

Chart 48 illustrates the general improvement in average fuel efficiency registered during checks on Centralized heating systems between 2002 and 2009, which was also due to ongoing inspections and relative stability in figures over the last three years.

Chart 48 – TREND IN CENTRALIZED HEATING SYSTEM EFFICIENCY (2002-2009)

Chart 48 – TREND IN CENTRALIZED HEATING SYSTEM EFFICIENCY (2002-2009)

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In-house Mobility

The Group tends to renew its corporate vehicle fleet in order to reduce emissions132 into the atmosphere. Over the last few years, the fleet has remained stable at around 2,450 vehicles, however latest generation vehicles have increased (euro 4) to replace “older” vehicles and, for the same reason, other vehicles still running in 2009 are due to be replaced in 2010. No important changes in nitrogen oxide (NOx) and carbon monoxide (CO) emission were therefore recorded in 2009 with respect to the year before, while CO2 emissions fell slightly due to a slight decrease in fuel consumption (diesel and petrol, see Table 83).

132See also Emissions and waste, as well as that illustrated in Emissions from Vehicles and Air Conditioning in the attached Environmental Accounts, page 19.