Renewable Energies

© B. Welker

The major characteristic of a renewable energy is the basic inexhaustibility of the energy source. While fossil and nuclear fuels are only finitely exploitable, the sun will continue to provide the Earth with energy in the form of solar radiation for another 5 billion years. 

The energy which can be obtained from renewable energy sources is sufficient to meet the world's current energy requirements three times over.
If the natural environment and the people who live in it are to be protected, a significant proportion of energy required in the medium to long term must be provided by renewable energies. Germany is focusing here on the sun (used for solar heat and solar power), wind, water, geothermal energy and biomass.

Renewable Energies currently meet around 3 % of Germany's primary energy needs and provide over 8 % of its electricity. German companies and research institutes are among the foremost in the world in many technical areas in the field of renewable energies. As an example, Germany is the leading export nation of wind farm technology. In no country on Earth are there as many wind farms as there are in Germany - one third of the world's wind energy is currently produced here.

144 information in Renewable Energies
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Feldtestanlage: Aufdachmontage der Kollektoren in Stetten, Bodensee
The system developed under the project combines an innovative hybrid collector with a heat pump, a latent storage unit and a combination stratified storage system. It saves more than 50% in primary energy and makes carbon-neutral heating possible.
The close-to-production prototype developed under the project makes specific use of the principles of physics to reduce “reverse thermosyphoning” and therefore requires no additional valves to monitor flow direction.
Mehr Durchblick durch Antireflexbeschichtung. Der untere Teil der Glasscheibe ist mit dem neuen Verfahren entspiegelt, dem oberen Streifen fehlt die Beschichtung.
Goal of a project supported by the Federal Ministry of Economy and Technology is to develop a suitable coating method for solar application. The companies Merck, Flabeg and the Fraunhofer-Institut for silicate research and solar energy systems are project partners. The newly developed anti reflection layer improves the light transmission of the non-reflection glass and enlarges the energy efficiency of thermal solar energy use up to 15%.
In a cooperating aminal husbandry and market fruit enterprise of the ecological agriculture fermentation gas is won by the application of a plant for the common fermentation of solid muck, liquid manure and clover. The nitrogen bound in the clover is utilized and circulated. With the planned biological gas facility the emissions are reduced by one ton ammonia and 20 t methane per year. Expand…
The results of the study demonstrate that from a climate perspective, low sulphur fossil fuels and biofuels offer a viable alternative to heavy fuel oil with a high sulphur content used in large diesel engines. No technical adjustments to the engines are required for biofuels. However the cultivation of the biomass must be sustainable so as to achieve positive climate impacts. Expand…
Keywords:  Großdieselmotor, Emission, biogene Kraftstoffe, Antriebstechnik More keywords , Fahrzeug
UN04 2012-08-01
In order to fulfil the 40 % reduction of CO2 emissions and the doubling of energy productivity laid out in the climate protection goals, BMBF brought together research and application-oriented approaches within the “Basic Research 2020+” funding programme. The projects funded focused primarily on increased energy efficiency, CO2 storage, fusion research and the development of renewable energy. ONLY AVAILABLE IN GERMAN.
Keywords:  CO2-Abscheidung und -Speicherung, Energieeffizienz, Klimaschutz
The geo-information system developed by the project facilitates close-to-reality evaluation of the climate protection potential provided by biogas feeding to the natural gas grid. The project also derived measurements for the activation thereof. Through feeding of biogas, the available biomass can be decoupled from the energy demand and a large proportion of the biomass potential can be tapped in a climate-friendly manner. Expand…
Keywords:  Energieversorgung, Biogas, Biomasse, Geographisches Informationssystem More keywords , Gülle
The project of the “ASKI” aims at installing a cogeneration plant, fueled with sewage digester gas originating from the central sewage plant at Ankara (Turkey). The project is unique in its kind and size within Turkey and demonstrates a reference object referring to economical and ecological optimised electricity supply. The project receives funding from the KfW.
Biomasseheizkraftwerk Pfaffenhofen: Kontrolle der Feuerung am Biomassekessel (Kesselvorderseite)
© BMU / Bernd Müller
In Pfaffenhofen, a town in southern Germany, a biomass-fired combined heat and power plant produces electricity from wood chips as well as from residual wood from sawmills, and in addition supplies the town with steam, district heat and cooling. The electricity it produces can cover the requirement of some 10,000 households. At the same time, the environmentally friendly power station supplies heat to up to 150 customers, among them a hospital, industrial plants, businesses, schools, the town hall and many households, via a 17 kilometre network. 80,000 tonnes of wood from the forests surrounding Pfaffenhofen, as well as wood waste from sawmills and the wood processing industry, replace about 24 million litres of fuel oil and spare the atmosphere some 65,000 tonnes of additional carbon dioxide annually. Pollutant emissions are kept at a low level by a flue gas treatment system installed downstream.
The Biomass Information Centre provides information for specific target groups about the thermal use of biogenous solid fuels. The overall goal is to increase the market share of biomass for the future in Germany and to cover the energy required with a environmentally and climate friendly as well as sustainable supply of power.
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WETEX 2014 - Water, Energy, Technology an Environment Exhibition

14 -16 2014, Dubai, United Arab Emirates
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FONA Research Area: Energy

Titelblatt Forschungsjahrbuch Erneuerbare Energien 2011

Forschungsjahrbuch Erneuerbare Energien 2011

Überblick über die Forschungsprojekte des BMU

Förderrichtlinien zum Marktanreizprogramm für erneuerbare Energien im Wärmemarkt

Am 11. März 2011 traten die neuen Förderrichtlinien des BMU mit verbesserten Förderkonditionen in Kraft.

Renewable energy sources in figures - national and international development

The publication describes the trends in renewable energy in 2012 and 2013 (update).