Siemens 2013 Annual Report Download - page 18

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Balanced energy mix
Generating power while
minimizing resource use
and environmental impact
Expected increase in capacity
from new power plants, 2013 – 2030 (in gigawatts)
The future of power generation will depend on achieving a bal-
anced energy mix. One key focus will be to expand the use of
renewables. As the leading provider of offshore wind turbines,
we’re playing a vital role here. For example, we built the world’s
largest offshore wind farm, the London Array, off the coast of the
UK. The installation’s 175 turbines are now generating enough
power to supply about 500,000 British households with green
electricity.
Flexible, high-efficiency fossil-fuel power plants will also be needed
to ensure reliable power supplies. The most efficient fossil-fuel
power plants are state-of-the-art combined cycle plants, whose fuel
consumption per kilowatt-hour is about one-third less than the
average figure for the world’s gas-fired fleet. Even greater efficiency
can be attained using combined heat and power plants, which gen-
erate both electricity and heat in the form of steam or hot water.
The net efficiency of the gas-fired cogeneration plant that we’re
now building in Düsseldorf, Germany is expected to exceed 61%.
When the thermal energy that will be diverted for district heating is
also included in the equation, overall fuel utilization efficiency
increases to 85%.
Combined CycleCombined Cycle OtherOther
Source: SiemensSource: Siemens
NuclearNuclear HydroHydroSteamSteamSimple CycleSimple Cycle Wind & SolarWind & Solar
China 1,584
13%13% 6%6%31%31% 12%12% 29%29% 9 %9 %
EU 813
14%14% 5%5% 2%2% 49%49% 23%23%
2%2% 5%5%
USA 697
36%36% 1%1% 25%25% 26%26%
2%2%
8%8% 2%2%
India 671
9%9% 44%44% 8%8% 20%20%
5%5% 13%13%
1%1%