Arno's EnergyIdeas (10)
Renewable Energies in Germany 2007
Among the renewable energy sources, apart from water and wind power a variety of other renewable energies. are used in Germany in 2007. The usage of renewable energies has increased, compared to the previous year by over 15% to 31.4 million tons SKE. Their share in the primary energy consumption rose from 5.54% to 6,6 %. In the total consumption of renewable energies, the biomass in their Different manifestations was involved with three-quarters in 2007. Especially important was the use of biomass for electricity and heat supply, with a share of 17%. The proportion of wind energy amounted to 15.4%, that of hydropower around 8%.
While clearly the biomass dominated for heat provision (with a good 93%) and certainly with the transport fuels, the structure of the electricity supply balanced The wind energy contributes to have around one-third. Until now, of secondary importance to the renewable energy sources are solar and geothermal energy.
Source: Arbeitsgemeinschaft Energiebilanzen e.V. |
Interesting are also the published values for photovoltaic at the electricity production (2.5%) and the decline of bio ethanol for transport fuel of 8.8% in 2006 to 7.9% in 2007.
Now the question: Why are not more stationary fuel cell systems in operation now, which, because of their electrochemical effectiveness are preordained for both, electricity and heat production? And, depending upon construction and billing methods, produce almost equal amounts of thermal and electric power. With an intelligent network these fuel cells systems can be connected to the virtual power plants and used for direct heating and/or air conditioning of buildings. These units already are working in pilot plants today, but at this time with natural gas as primary energy source and reformers for the production of hydrogen.
The goal must be, to create the decentralized production and use of direct solar (organic)-hydrogen. This will reduce both the dependency on imported primary energy, as well as the cost of electricity, heat and fuel. This also means a drastically change in the current electricity system to entirely new qualities.
Then you can also drastically reduce the high losses in the current process for the production and distribution of electricity and their cost. This is a valuable target, technically feasible already now, the question is: Who will start in coping his challenge? At the moment, everyone has the chance to do so.
Date: 01.04.2008
Links to news:
http://www.ag-energiebilanzen.de/
https://www.hydrogenambassadors.com/background/renewable-energies-in-germany-2007.php |