Impact of renewable energies on the operation and economic situation of coal fired power stations: Actual situation of coal fired power stations in Germany

Due to the fluctuating character of the renewable energy sources the demand of conventional power plants for flexibility is increasing. In the recent years, in Germany there has been a fast rise of production capacity of renewable energies, especially from wind turbines, photovoltaic installations,...

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Bibliographic Details
Published in:Frontiers in Energy 2017-06, Vol.11 (2), p.119-125
Main Authors: KRAUTZ, Hans-Joachim, LISK, Alexander, POSSELT, Joachim, KATZER, Christian
Format: Article
Language:English
Subjects:
Biomass
Coal
Coal-fired power plants
Corrosion
Demand
Durability
Economics
Electric power plants
Electricity generation
Energy
Energy Systems
Exchanging
Flexibility
flexible load operation
Fossil fuels
Full load
Impact analysis
Life expectancy
Life span
Maintenance
Markets
minimal load
Photovoltaics
power gradients
Power plant components
power plant maintenance
Power plants
Production capacity
Renewable energy sources
Renewable resources
Research Article
Revenue
Turbines
Wind power
Wind turbines
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Summary:Due to the fluctuating character of the renewable energy sources the demand of conventional power plants for flexibility is increasing. In the recent years, in Germany there has been a fast rise of production capacity of renewable energies, especially from wind turbines, photovoltaic installations, and biomass plants. The installed nominal power of wind turbines is actually (December 2016) 42 GW and of photovoltaic installations 40 GW. The renewable electric energy production in Germany is about 190 TWh/a, which represents a share of 33% of the yearly demand. The increased need for flexibility affects both the power gradients as well as the minimum load of conventional power plants. Due to this flexibility behaviour, conventional power plants are faced with problems concerning the durability of power plant components, corrosion, more maintenance effort and consequently the overall life expectancy. Another consequence of the increasing share of renewable energies is the decreasing full load operating hours, especially of coal fired and gas power plants. Along with decreasing revenues from the energy exchange market, coal fired power plants are faced with new economically challenges.
ISSN:2095-1701
2095-1698
DOI:10.1007/s11708-017-0468-4