Unjustified developments of renewable energy sources: the danger to be lured into a trap (II) (1)
Antanas Ðutas 2013 07 02
This part of the article is related to the negative consequences of rapid growth of renewable energy sources (RES) in Germany, and to potential renewable energy developments in Lithuania.
According to the data of ENTSO-E, the share of electricity produced in Germany from gas, coal, including other polluting power plants, has increased from 60 to 67 percent. This was due not to the reduced power generation from RES but to the reduced volumes of electricity generated in nuclear power plants (from 23 to 17 percent). Thus, reduced share of nuclear power and the necessity to replace one electricity production method by another (more polluting) is directly related to the increased air emissions. Due to time inconsistencies RES generated electricity cannot replace nuclear power, thus the ones polarising the above two types of electricity production are not right.
What Lithuania can learn from Germany? Since Lithuania is lagging behind Germany’s economy (including geographical aspects), our country shouldn’t repeat Germany’s road since there is no time for experiments.
There is one RES development scenario which could be (according to authors) more beneficial for Lithuania than power plant developments. According to this scenario, Lithuania can produce not only the required heat output but also one-third of its electrical needs from biofuel.
The Aved¸re power plant (Denmark) which can fire gas, oil, and biomass(wood pellets, straw)is often presented as an example of green energy. The Aved¸re2plant is especially effective: its power utilisation has already reached 94-96 percent, and thermal power exceeds 500 MW. According to the green energy advocates, the blocks built in Vilnius and Kaunas could help solve heating problems in the above cities and provide for generation of large amounts of electrical power.
The Danish declare that they burn biofuel in Aved¸re(2nd block); the total thermal power of the power station reaches 900 MW. About 80 percent of fuel consists of gas, coal and fuel oil, whereas wooden pallets and straw are used to “dilute” the fuel oil. The Aved¸repower plant is near the sea, thus transportation of various fuels does not cause any problems. In Vilnius and Kaunas fuel delivery could be a major obstacle.
Today our task is to develop a reliable power system based on knowledge and tested energy production, transmission and consumption methods. Later we could think about the experiments and more risky innovative solutions. For that it is necessary to redirect our thermal facilities to biofuel production facilities (where it is economically and socially feasible); whereas revision of the basic power production methods (power plant in Elektrënai) and implementation of new and economically feasible methods (new nuclear PP) should be considered in the power production sector.

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