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Energie der Zukunft

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Today about 80 % of our energy needs are still covered by fossil fuels Nuclear energy supplies an additional 11 % So the share of renewable sources of energy above all water power amounts to less than 10 % at present The combustion of fossil energy sources is known to generate CO2 Worldwide about 36 billion tons yearly Besides other greenhouse gases such as ozone, methane or hydrogen carbon dioxide contributes considerably to the greenhouse effect Since the 19th century the share of CO2 in our atmosphere has been dramatically increasing In 2008 already 385 shares of CO2 in every 1 million of particles – that is 385 ppm – were measured Nuclear energy, too, poses problems for the future Besides possible acci- dents, it pollutes the environment with its radioactive waste for thousands of years to come Whereas fossil and nuclear sources of energy will be used up during the next 50 to 1000 years (depending upon the kind of energy and the scenario) renewable energies are virtually inexhaustible because they are constantly regenerated by solar energy The concept of sustainability becomes more and more significant Ecological sustainability requires us to treat our natural environment with consideration It is precisely in energy consumption that climate protection is of the essence so as to preserve nature and environment for the following generations Economic sustainability is to protect energy resources from short-term exploitation The structure of the energy industry, too must provide a solid and lasting basis for acquisition and wealth Social sustainability, finally, supports the development of societies in which, for example, care is taken that resources are distributed fairly among generations For several years the so-called ecological footprint has been considered an indicator of such sustainable use It provides information on the surface area you need in whichever country to keep up your present lifestyle lastingly The ecological footprint is measured in “global hectares” In order to determine it, the most various data from the fields of nutrition, mobility, the domestic sphere are considered as well as goods and services that are claimed by the individual In comparisons the industrialised countries with their lavish consumption habits perform badly The average American, for example leaves a huge ecological footprint of 9.4 hectares with 4.5 hectares, a German still lives the high life In contrast, a man in India only needs about 0.7 hectares that is almost modest With impressive, even frightening effect, the worldwide calculation of the ecological footprint makes us aware of the following Our earth has only got 1.8 global hectares’ room for every individual but to day one human already claims 2.2 hectares on average which means that we do not only live on credit on our planet but even reduce our substance constantly Obviously, there is a lot to be gone The necessity for saving energy is increasingly being recognized There are two main arguments in favour of it First of all, we are increasingly becoming aware that an unrestrained use of energy damages our health and environment more and more for example with exhaust fumes, noise and greenhouse gases and even global climate change Secondly, a lack of availability of certain energy forms or sources, especially under the conditions of our market economy leads to higher energy prices More energy transparency would be helpful For this, more data on energy flows and the resulting costs should be available to everyone The real costs arising in the production of goods should become clearer or the “polluter pays” principle more firmly enforced Today the costs for health hazards, destroyed biotopes accidental oil spills, nuclear disasters or climate damage are not included in the energy prices but are borne entirely by the companies concerned From this point of view we must admit: energy is offered at too low a price! Energy supply has grown historically That means the demands for climate protection environmental protection sustainability assured supply necessary today cannot be realised with the help of our old technologies There can be no doubt that the future belongs to renewable energies The sun with its “clean energy” is given more and more priority Solar cells or solar panels utilize its rays without any noxious waste products, combustion residues or greenhouse gases such as CO2 polluting our environment Renewable energies meet the demand for sustainability

Video Details

Duration: 6 minutes and 36 seconds
Country: Germany
Language: German
Genre: None
Views: 127
Posted by: manfredwolf on Apr 30, 2010

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