Renewable energy
From Bio Energy
Bioenergy can always be considered as a form of renewable energy. Bioenergy, like solar energy, wind energy and hydro energy, originates from a renewable inexhaustible source. During their growth, plants and trees take CO2 from the air and with the conversion of biomass into electricity and heath, this CO2 is set free. By the utilization of vegetable material, no (extra) CO2 is added to the atmosphere. The generation of bioenergy is a continuus cyclical process of fastening and setting free of CO2, which fits into the natural cycle. The difference with the natural cycle-process is that we convert the fastened CO2 into renewable energy, while in nature, this follows the process of digestion and putrefaction.
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The Importance of Bioenergy
In the Netherlands, bioenergy is considered to be an important source of renewable energy for the next decades. Bioenergy is important for several reasons. The most important reasons are:
- fossil fuels are running out, and bioenergy, at an increased use of energy, can contribute to reducing this problem. It is expected that the use of energy in the world in 2020 will have increased with at least 50% and maybe even 100%, compared to 1990. The last 30 years, the use of energy as almost doubled. For this reason, the supplies of oil and gas may be running out within a few decennia. The supply of coals may be enough for the next 200 years.
- bioenergy can contribute to the reduction of CO2-push-out, and therefore also to the decrease of the greenhouse-effect. Except for the fact that coals, gas and oil are running out, the combustion of fossil fuels is the most important cause of the increased CO2-standard in the atmosphere (80% can be contributed to this). This increase of the CO2-standard is responsible, worldwide, for more than half of the so-called greenhouse-effect (heating-up of the earth). The subsequent possible climatic changes can have large consequences. Next to carbondioxide, there are several other so-called greenhousegases like methane (CH4), laughing-gas (N2O), ozone (O3) and the so-called CFK’s (chlorinated fluor carbons). The policy of the government is mainly aiming at pushing back the CO2, because this gas is the most important contribution to the greenhouse-effect.
Next to this there are several other arguments which plead for the further development of bioenergy, namely:
- Waste which is already present, can be applied usefully;
- Bioenergy can deliver a big contribution to the energy supply worldwide;
- From a financial point of view bioenergy is attractive (even at short notice) compared to other forms of renewable energy;
- Bioenergy can relatively easy fit in into the existing energy supply, because biomass can be kept as a solid or liquid fuel, and because one can partly use existing installations and technology, which are developed for fossil sources;
- The generation of bioenergy contributes to the Dutch economy. Projects deliver an important economic added value and contribute to the employment, among others in the agricultural- and forestry sector. Besides, the Netherlands can in certain technological areas act as a rolemodel, which can lead to a headstart for Dutch companies;
- The dependency of fossil fuels from other parts of the world makes it attractive to use alternative energysources as much as possible. By using locally available biomass-fuels, the import dependence of the energy supply is slightly decreased.
Currently the most important part of the energy still originates from fossil fuels. In the Netherlands, 90% of the electricity that is being used originates from coals-, petroleum- and natural gas power stations. In 2005 some 6% was from renewable sources and 4% is from nuclear energy.
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