The plant consists of nine
Wärtsilä 18V46-type gener-
ating sets with heat recov-
ery boilers on each and a
steam turbine. Each engine
has a gross electrical out-
put of 16. 5 MW; the steam
turbine has a gross electri-
cal output of 12 MW.
Siemens Energy
Simmering Power Plant, Austria
It is at times, easier for power station
owners to obtain approval to upgrade
a plant rather than to construct a new
plant on a greenfield site. Repowering
is an excellent concept for improving
the efficiency and flexibility of older
continued on page 30
time it may run as a peaking plant
when the country is no longer facing
power shortages.
Wärtsilä’s technology enables the
utilization of locally available fuel
with the highest possible efficiency to
ensure a reliable supply of power to
the grid. The plant’s life-cycle efficiency is rated at 45% for the lifetime
of the plant when running on heavy
fuel oil at site conditions. This level of
efficiency on low-cost fuel oil will
enable the generating costs to be very
competitive. Compared to an open-cycle plant with the same power output, the Attock plant has a better utilization of primary fuel, resulting in
lower specific emissions.
Globally, Wärtsilä operates 130 installations in 31 countries, supplying a
total of close to 4900 MW of power.
Wärtsilä O&M agreements are tailored to the needs of its customers for
added value. Under an O&M agreement, Wärtsilä takes care of the
recruitment, training and management of the O&M staff, to energy production, logistics and other services. A
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Editor’s Note: Continuing west to the
European region, Siemens presents a
repower project in Austria. The Sim-
mering1 steam power plant in Vienna,
Austria, is converted into a combined-cycle
power plant with district heat extraction.
MAN Diesel submits a CHP plant in
Bremen, Germany, delivering 4. 2 MW to
the national grid and 3. 6 MW thermal
power to a nearby refinery. The 7L35MC-
S engine is fired by crude palm oil fuel;
total plant efficiency in CHP mode has
been calculated to exceed 87%.
