HTW Berlin: Only in the year 2150 completely regenerative energy
Published
The EEG is supposed to achieve the goals of the Paris climate summit. But at the rate of expansion to date, according to a study by Berlin's HTW, we will have to wait until 2150 for Germany to switch completely to renewable energies.
It is not news that the implementation of the climate turnaround will not proceed without effort. Based on the expansion progress of energy systems for renewable energies from the years 2000 to 2015, Volker Quaschning from the Berlin University of Applied Sciences has calculated in the so-called "sector coupling study".how long it would take for Germany to obtain 100 per cent of its energy from renewable sources. He arrives at the year 2150.
"Paris goals practically impossible"
"This makes it practically impossible to meet the Paris targets. Either the political leaders lack the necessary expertise or they do not intend to comply with the climate protection agreement at all," says Quaschning.
"We need to expand wind and solar energy three to six times faster than planned by the federal government," Volker Quaschning specified the results of his research group Solar Storage Systems at HTW Berlin: onshore wind power would have to be expanded by 6.3 gigawatts net per year instead of 2.8 GW gross, as envisaged in the EEG 2016. In the case of photovoltaics, as much as 15 GW would be required annually instead of the 2.5 GW envisaged in the EEG.
At www.greenpeace-energy.de/presse you will also find a fact sheet with key results of the HTW study and additional calculations by Greenpeace Energy on the need for long-term storage (wind gas / power to gas) in the context of sector coupling.
Press release from 20 June 2016 by Greenpeace Energy eG and Prof. Dr. Volker Quaschning, Renewable Energies Course, Berlin University of Applied Sciences
with a focus on solar energy, neighbourhood concepts and funding
The BUND yearbook Ökologisch Bauen & Renovieren (Ecological Building and Renovation) published by the Bund für Umwelt und Naturschutz Deutschland (BUND) helps by making owners fit for discussions with the house bank, architect, energy consultant and craftsmen. The guidebook, which will be available from November, shows what can be done and how: Based on numerous house portraits, the annual compendium helps the reader to find out which measures, building materials and technologies are most suitable for their own project.
Written in an understandable way and clearly presented, with many examples and suggestions, the 244-page "BUND Yearbook 2019 - Ecological Building and Renovation" offers an all-round service for builders and renovators. The booklet offers six topics: basics/planning, model houses, green around the house, building envelope, building services and interior design. Furthermore, state funding opportunities are presented. With in the focus this time quarter concepts for less surface consumption and more togetherness stand. In addition, long-term experience with solar thermal energy and innovations in photovoltaics and solar power storage.
sdg21 comment: There is no comparable publication for the low costs. For this one must accept that a not insignificant part is occupied by advertisements, which are however thematically relevant. Strongly contradictory is however the request of the BUND to reduce the surface consumption, but then in the booklet almost throughout only examples of single-family houses to show. The few sustainable quarters, multi-storey residential buildings or housing estates are almost lost. The title "Neighborhood Concepts" promises more than the publication actually delivers.
The 244 A4-page handbook can be purchased at a price of 8.90 Euros at major kiosks, station bookstores and BUND offices.
Or (plus 2.00 Euro shipping costs) can be ordered from the publisher: Target marketing, Gerberstr. 5f, 70178 Stuttgart, Tel. 0711/96695-0, bestellungen@ziel-marketing.de.
The complete yearbook or individual articles are also available as an e-paper via the publisher's website www.ziel-marketing.de.
In the context of the Green Deal, the EU's tightened targets on the path to climate neutrality envisage a reduction in CO2 emissions of 55% by 2030 and 100% by 2050. Against the background of these tightened parameters, the question arises as to the impact on the energy transition in Germany. Based on its energy system model REMod, Fraunhofer ISE has calculated the consequences of the new EU targets for the expansion of renewable energies in Germany and now presents the results in a short study.
In February 2020, Fraunhofer ISE presented the study "Pathways to a Climate-Neutral Energy System - The Energy Transition in the Context of Societal Behaviour", which investigated the influence of societal behaviour on possible transformation paths of the German energy system towards an almost complete reduction of energy-related CO2-emissions in the year 2050. The calculations carried out with the REMod energy system model were based on the targets set by the German government at the time of preparation, i.e. a reduction in German CO2-emissions by 55% in 2030 and 95% in 2050 compared to 1990.
In response to the tightening of the European targets from 40% to 55% by 2030, which has now been implemented as part of the European Green Deal, the Institute has recalculated. The transformation paths for Germany considered in the February study were revised with a view to reducing Germany's CO2-emissions of 65% in 2030 and complete climate neutrality of the energy system in 2050. The scientists from Freiburg recalculated all scenarios of their study from February (reference, insistence on conventional technologies, unacceptance of large infrastructure measures, sufficiency). As an additional aspect, they added an investigation of the sensitivity for import prices of green hydrogen and synthetic fuels. The short study mainly considers the reference scenario in order to be able to go into more detail on the changes caused by the target tightening. However, the study also identifies corridors for the expansion of a variety of technologies that can be derived from different scenarios. In the case of photovoltaics and wind, annual additions of 10-14 GW and 9 GW respectively are required by 2030 in order to achieve sufficient CO2-free electricity for Germany.
"The update of our energy end-use study shows that achieving the climate protection targets, even with a greater reduction in greenhouse gas emissions than previously assumed, is feasible from a technical and systemic point of view, albeit with greater efforts," says Dr Christoph Kost, head of the Energy Systems and Energy Economics Group and author of the short study. "A target tightening of energy-related CO2-emissions leads to a higher direct or indirect use of renewably generated electricity in the consumption sectors. This in turn requires a much greater expansion of wind and solar power generation facilities." Furthermore, the short study shows that the expansion of fluctuating renewable energies requires a strong expansion of system flexibility.
If we want to achieve a reduction in CO2emissions by 65% by 2030, battery-electric vehicles must account for 30-35% of passenger transport in the mobility sector, for example. In a climate-neutral energy system by 2050, conventional internal combustion engines will be virtually eliminated from passenger car transport as well as from freight transport.
"Heat pumps - used in households or to supply district heating networks - must become a key technology for heat supply with immediate effect," says Institute Director Prof. Dr. Hans-Martin Henning, summarising the results for the building sector. With a view to the CO2-avoidance costs, he adds: "The tightening of the target used here leads to an increase in CO2-avoidance costs. However, these depend to a large extent on the development of final energy demand."
Link to the study "Pathways to a climate-neutral energy system - The energy transition in the context of societal behaviour", February 2020, update December 2020:
In his lecture, Prof. Dr. Henning Austmann addressed the need for cultural change, even beyond the culture of living and building. Technology and politics have hardly been able to achieve any significant progress - let alone the necessary success - in recent years. A rethink and a cultural change are therefore needed so that climate change does not destroy existence on earth.
The lecture recording was made in the context of the symposium "Herbstforum Altbau" in Stuttgart on 21.11.2018.
When the economy is in a bad way, SMEs are often the first to suffer. They can hardly get any more money. This was very extreme during the economic crisis of the 1930s. And that's why some companies founded the WIR Bank in 1934.
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The EEG is supposed to achieve the goals of the Paris climate summit. But at the rate of expansion to date, according to a study by Berlin's HTW, we will have to wait until 2150 for Germany to switch completely to renewable energies.
