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Wärtsilä: IEA finds combustion engines competitive in enabling wind and solar energy

Wärtsilä Corporation, Press release, 14 May 2014 at 10 am EET

Internal combustion engines (ICEs) are a promising technology for supporting
wind and solar energy, a new report by the International Energy Agency (IEA)
finds. Comparing different sources of flexibility for power systems, IEA says
gas-fired ICE power plants are "very mature technology" and "cost-competitive
to OCGTs" (Open Cycle Gas Turbines). Commenting on the alternative
technologies, IEA notes that "growth in ICE plants actually exceeds that of
turbine-based technologies". The findings were published in IEA's Energy
Technology Perspectives 2014.

According to IEA, the key asset of engine-based generation is fast starting
and ramping capability. Quick reaction time is key to follow the output of
wind and solar as closely as possible.

International Energy Agency also mentions high efficiency at part-load. The
part-loading efficiency penalty at 30 per cent load is zero for combustion
engines and about 32 per cent for turbine-based plants. Furthermore, one of
the advantages is fuel compatibility. Combustion engines provide additional
fuel security, because they can operate on any liquid or gaseous fuel,
including biofuels.

Wärtsilä's power plants have a long track record of supporting renewables.

"There are other technologies out there but what led us to the decision to
pick the Wärtsilä's was that they start very quickly and are efficient
units," says Mark W. Schwirtz, President of the consumer-owned utility Golden
Spread Electric Cooperative in Texas, USA. This 170 MW unit is used to
wind-balancing and shaving peaks in electricity demand. The capability of
starting in 30 seconds and ramping to full power in just 5 minutes is needed
for both tasks.

The system-level value of agile generation is demonstrated in a recent white
paper by Wärtsilä and Energy Exemplar. Replacing 5.6 GW of planned turbine
capacity with combustion engine plants in California would result in 4-6 per
cent savings in electricity bills and annual reductions of 450 000 metric
tons of carbon emissions. Savings add up from avoiding inefficient
part-loading of gas turbine plants.

Link to the white paper

Wärtsilä Power Plants in brief

Wärtsilä Power Plants is a leading global supplier of flexible baseload power
plants of up to 600 MW operating on various gaseous and liquid fuels. Our
portfolio includes unique solutions for peaking, reserve and load-following
power generation, as well as for balancing intermittent power production.
Wärtsilä Power Plants also provides LNG terminals and distribution systems.
As of 2014, Wärtsilä has 56 GW of installed power plant capacity in 169
countries around the world.

For further information please contact:

Jussi Laitinen
Communications Manager
Wärtsilä Power Plants
Tel: +358 50 4042006

Wärtsilä in brief

Wärtsilä is a global leader in complete lifecycle power solutions for the
marine and energy markets. By emphasising technological innovation and total
efficiency, Wärtsilä maximizes the environmental and economic performance of
the vessels and power plants of its customers.

In 2013, Wärtsilä's net sales totalled EUR 4.7 billion with approximately
18,700 employees. The company has operations in more than 200 locations in
nearly 70 countries around the world. Wärtsilä is listed on the NASDAQ OMX
Helsinki, Finland.

Wärtsilä Newsroom


This announcement is distributed by NASDAQ OMX Corporate Solutions on behalf of NASDAQ OMX Corporate Solutions clients.
The issuer of this announcement warrants that they are solely responsible for the content, accuracy and originality of the information contained therein.
Source: Wärtsilä Oyj Abp via Globenewswire


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