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Energy efficiency in end usage

The Electricity and Gas Authority (AEEG) introduced Energy Efficiency Allowances (TEEs) for the first time in 2004 as a means of encouraging energy savings in the end usage of gas and electricity. TEEs measure the tonnes of oil equivalent (toe) saved as the result of initiatives taken by companies working in the energy field. Each year A2A obtains TEE recognition thanks to the heat produced by cogeneration and the energy recovery in certain plants in the Milan area (Famagosta, Cassano d’Adda and Sesto San Giovanni) which feed the district heating networks and determine a reduction in the consumption of natural gas on end usage.
A calculation model was introduced in 2011 as a means of quantifying the fuel saving associated with the powers stations responding to the high-yield requisites. For the plants responding to those requisites it is possible to calculate the tonnes of oil equivalent of the natural gas saved which correspond to an equal number of White Certificates (WCs) issued by the Energy Services Operator (GSE).
In 2011 the Monterosso (Bergamo) plant, whose district heating network spreads across the local area adjacent to the cogeneration plant, gained access to this incentive by having the energy saving associated with high-yield cogeneration recognised.
A2A also works in heat management by running heat plants of which it is not the owner, with the aim of optimising the supply of heat to ensure climatic comfort in the various environments. Energy saving measures on these plants relate to the replacement of traditional boilers with condensation boilers and the adoption of thermostatic valves at the premises of local users.

The A2A Group also takes initiatives to reduce electricity consumption by its own plants and at its own locations. For example over the years the subsidiary Aspem has achieved an improvement in the electricity used by the Varese aqueduct by rationalising the criteria used in managing the lifting plants, as well as by gradually introducing inverters and replacing pumps with better yields. There was a reduction in specific electricity consumption of 21.1% between 2006 and 2011.

Measures have been taken at the Cassano d’Adda (Milan) thermoelectric power station to reduce electricity consumption for lighting: the halogen and incandescent lamps have been replaced by low consumption equipment and by led lighting systems. In addition, dimmer switches have been installed that allow for the lights to be switched on automatically only during the hours this is necessary and steps have been taken to increase staff awareness about limiting waste. The graph shows the reduction in measured electricity usage and the corresponding reduction in indirect CO2 emissions.
Measures to improve lighting efficiency have also been taken at the Monfalcone (Gorizia) thermoelectric power station and at the cogeneration plant in Via Rossi in Varese, where sodium light sources and dimmer switches have been introduced.

ELECTRICITY CONSUMPTION FOR THE INTEGRATED WATER SERVICE KWh/m3 (ASPEM)

ELECTRICITY CONSUMPTION FOR THE INTEGRATED WATER SERVICE KWh/cm (ASPEM)

CASSANO D’ADDA THERMOELECTRIC POWER STATION - ELECTRICITY CONSUMPTION FOR LIGHTING AND INDIRECT EMISSIONS OF CO2

CASSANO D’ADDA THERMOELECTRIC POWER STATION - ELECTRICITY CONSUMPTION FOR LIGHTING AND INDIRECT EMISSIONS OF CO2