Everyone is talking about the big task of climate protection. The German government makes up the precursor concerning the reduction of CO² in comparison to other countries.
The big German electricity concerns hold climate congresses and like mentioning climate protection, above all to have a justification to run their nuclear power plants longer than planned and earn the money for it.
But talking alone does not help anymore. If we really want to avoid the worst, we have to act now and change our power supplies completely.
What will the future of energy look like?
Efficiency as a precondition:
Renewable energies and cogeneration of heat and power can only replace nuclear and coal-fired energy completely, if the energy consumption in general decreases.Numerous studies have shown that the energy consumption could be halved by 2050.
Due to the law of renewable energies, 12 per cent of the electricity is produced by wind, sun, water or biomass. Within the last years this sector started booming. The capacity of wind engine has risen by 20 per cent each year. By 2020 the renewable energies have to make up at least 20 per cent of the produced energy. The German nuclear power plants could be replaced by renewable energy. The BUND emphasises that the extension of renewable energies has to be ecologically worthwhile and compatible with the nature.
The “Naturstiftung David” of the BUND Thuringia shows in its projects how to use solar energy in sports clubs.
Support of cogeneration of heat and power
The highest efficiency in power generation can be achieved by cogenerating heat and power. The power plants generate electricity and heat for the heating of their buildings or industrial processes simultaneously.
The possible potential can be seen beyond the borders: While Germany uses cogeneration only in 11 of one hundred cases, in the Netherlands and Finland it goes up to 40 per cent, and in Denmark it is even 50 per cent.
Gas-fired power plants as an interim solution
Most of the coal-fired power plants are more than 40 years old and have to be decommissioned. But then there will be a gap that can only be filled with renewable energies and cogeneration in ten, maybe 20 years. Gas-fired power plants are an agreeable solution for the transitional period. They produce about 350 g of CO² per kWh of electricity – which is less than half in comparison to the emissions of coal-fired power plants. In sum we will not need more natural gasoline if the quality of thermal insulation increases.