More specifically:
The quantity of energy purchased and used by
the Group came exclusively from non-re-
newable sources and stood at 38,062 TJ,
dropping by 8.5% from the previous year. This
reduction was the result of the restriction by
85% in the use of fuel oil and its replacement
by natural gas as the primary fuel in all our
subsidiaries, in combination with the reduction
of the consumption of natural gas in the En-
ergy sector.
Similarly, the quantity of energy produced by
the Group stood at 31,437.7 TJ, declining
slightly (by 1.8%) from 2012, as a result of the
declining trend in the aggregate demand for
electricity in Greece, coupled with the increase
in the installed capacity of RES power plants
(mainly Photovoltaics) and with changes of a
regulatory nature in the operation of the
wholesale electricity market.
As a result, the quantity of energy exported
by the Group to the National Grid dropped by
12.5% to 15,100 TJ. Of this total quantity,
71.3% and 2.5% was contributed from the
Thermal Plants (IPPs) and RES-based plants, re-
spectively, of PROTERGIA S.A., with 28.7% ac-
counting for the electricity produced by the
Combined Heat and Power (CHP) plant of
ALUMINIUM S.A.
The total indirect consumption of energy rose
to 16,979 TJ, up 29% from 2012. This quan-
tity came from non-renewable sources, with
electricity accounting for 56% and the ener-
gy from steam accounting for 32% of this to-
tal quality, with the remaining 12% repre-
senting other consumption sources, mainly nat-
ural gas and fuels.
Finally, in what regards the quantity of primary
energy used to produce electricity and steam,
the Metallurgy & Mining sector consumed
11,678 TJ of Natural gas. The Public Power
Corporation (PPC) S.A. consumed 801.54 kt
of lignite in total, up 3% from its consumption
in 2012, in order to supply the Group with
electricity which was consumed almost entirely
(99.7%) by ALUMINIUM S.A.
24
TOTAL CONSUMPTION
OF ENERGY PURCHASED (TJ)
Natural gas
Fuel oil
Diesel oil
Petrol
2012
39,023.6
2,457.5
92.3
11.3
2013
37,590.0
357.0
107.9
6.7
TOTAL CONSUMPTION OF SECONDARY
ENERGY FROM RENEWABLE SOURCES (TJ)
Hydropower
Solar
2012
1.2
2.1
2013
4.4
1.4
To manage energy efficiently, the aluminium production line is supplied with electricity by the High-Efficiency Combined Heat
and Power (CHP) Plant, which uses natural gas as combustion fuel to produce electricity and two heat recovery boilers pro-
ducing high-pressure steam from the exhaust gases to drive one steam turbine. This initiative led to the abolition of the Ener-
gy Department which until now was serving this purpose. In energy terms, this initiative means a direct reduction in the annu-
al consumption of fuel oil by 150,000 tons, a quantity that corresponds to 6,028,500 GJ approximately. An additional pos-
itive effect of this initiative is the fact that the electric power which this plant supplies to the National Grid is now used to sub-
stitute the power which under the previous scheme would be obtained from lignite combustion. On the basis of the data pre-
sented in the Environmental Impacts Study for the plant, it is estimated that this initiative will lead to reduced carbon dioxide
emissions at the national level.
The company’s initiatives for the conservation of electricity (work quality checks, daily and weekly checks of alumina quality,
mobilisation-sensitisation of the personnel involved, optimisation of parameters, swift identification of problem-prone basins,
improvements in equipment and methods etc.), resulted in a specific consumption of 13,338 kWh/t of Alumina – one of the
best among all aluminium production plants.
During 2013 the systematic efforts for the conservation of energy were continued through initiatives for the refurbishment of
equipment in production departments. The implementation of these initiatives resulted in energy savings of 1.16 TJ and also helped
achieve the individual targets which had been set for a 5% reduction in direct and indirect consumption as of 2012.
Given the activity of the company’s power plants, savings in primary energy are not possible. Nevertheless efforts are made to
ensure that this energy is used in the best possible way, employing the best methods available, such as the use of high-tech, high-
efficiency wind turbines.
The company's goal is for its natural gas fired thermal power plants to remain within the high-efficiency end of the output curve
and to maintain the maximum possible efficiency and availability rates throughout the year.
TOTAL ENERGY
PRODUCED (TJ)
Fuels
Thermal plants
Heat
RES
2012
14,354.2
13,472.0
3,810.2
386.4
2013
14,547.7
11,141.2
5,365.7
383
TOTAL ENERGY
EXPORTS (TJ)
IPP
CHP
RES
2012
13,033.2
3,870.4
386.4
2013
10,763.2
3,954.6
383
TOTAL INDIRECT ENERGY CONSUMPTION
FROM NON-RENEWABLE SOURCES (TJ)
Electricity
Steam
Natural gas
Petrol
2012
9,282.2
3,810.2
0.0
1.2
2013
9,566.3
5,365.7
2,042.0
0.4
ENERGY CONSERVATION INITIATIVES
Metallurgy
& Mining
Sector
Construction
& EPC Projects
Sector
Energy
Sector
