The municipality of Wüstenrot wants to be energy self-sufficient by 2020. The project "EnVisaGe - Development of a municipal plus-energy concept using the example of the municipality of Wüstenrot" is part of the EnEff:Stadt initiative and describes how, in addition to reducing primary energy use and CO₂ emissions (keyword "decarbonisation"), independence from energy imports can be achieved and local value creation strengthened.
This publication "Vision 2020 - The PlusEnergy Community of Wüstenrot" describes
the starting position of the community of around 6,500 inhabitants,
the key steps in the conceptualisation and implementation of the goal of energy self-sufficiency and
the results obtained by 2015 as part of the research project
As the energy transition will primarily be implemented in the municipalities, this publication is intended to provide valuable information that should inspire people to follow suit.
Bibliographic data:
Vision 2020 - The PlusEnergy community of Wüstenrot
by Dirk Pietruschka
2016, 139 pages, 97 illustrations,
11 tables, cardboard
ISBN 978-3-8167-9545-2
A recent study by the Energy Watch Group and the Finnish University LUT shows how the energy transition can be realised with 100% renewable energies in Europe. According to the study, greenhouse gas emissions would be reduced to zero before 2050 and there would be significant financial advantages compared to the conventional fossil-nuclear system.
Berlin, 22 October 2018: Vattenfall Energy Solutions, Gewobag and the energy storage start-up Lumenion are jointly piloting a new type of sector-coupled steel storage system at Bottroper Weg in Berlin-Tegel, which absorbs regional generation peaks from wind and solar energy in a grid-serving manner and later provides the renewable energy as heat and electricity in line with demand.
"With this pilot project, we want to demonstrate the particular technical and economic suitability of thermal storage systems for the effective utilisation of large quantities of wind and solar energy in a very practical way," says Alexander Voigt, founder and Managing Director of Lumenion. "Some of our team have been working with renewable energies for over 30 years and with energy storage systems for over ten years. Based on this experience, we made a conscious decision in favour of steel as a storage medium for the second phase of the energy transition, which is just beginning."
The Lumenion steel storage system stores "electricity peaks" for less than 2 cent/KWh in a cost- and space-efficient manner at up to 650° Celsius as heat, which can be converted back into electricity using a turbine unit if required - or used entirely as heat. As a co-founder of Solon, Q-Cells and Younicos, among others, Voigt has been successfully launching solar modules and storage systems on the market since the 1990s.
Hanno Balzer, Managing Director of Vattenfall Energy Solutions GmbH: "Decentralised systems and energy storage are key factors in the energy transition; heat is a particularly cost-effective form of storage. If the stored energy can then be utilised not only as heat but also in the form of electricity, that is a milestone. The high-temperature storage system brings us a big step closer to this!"
Karsten Mitzinger from Gewobag Energie- und Dienstleistungsgesellschaft adds: "The energy transition can only succeed if it is decentralised and based on partnership. As a housing industry, we are making our contribution to climate protection in our neighbourhoods. With this project, we are pleased to be able to demonstrate the good cooperation between energy supply companies, municipal housing associations and innovative start-ups. Only together can we master the major challenges of the energy transition."
In the Tegler pilot project, a 2.4 megawatt hour (MWh) storage block is being trialled for commercial use and transferred to regular operation. To this end, the unit will be integrated with an existing gas-powered CHP unit from Vattenfall Energy Solutions into the neighbourhood electricity and local heating supply of a 1970s apartment building owned by Gewobag. The storage system will temporarily absorb any power peaks that are not required and feed them into the heat supply later on as needed. In a second step, a reconversion into electricity is also planned.
Parallel to the construction of the pilot project, Lumenion is testing a 450 kWh prototype on the campus of the University of Applied Sciences (HTW) in Oberschöneweide. The HTW is supporting Lumenion with practical accompanying research in the development, testing and validation of data, as well as in the regulation and operational management of the innovative storage system.
In further projects, Lumenion storage systems with 40 MWh and even 1,400 MWh are to be created as the next milestones. These giga-storages can integrate existing and newly added large quantities of renewable electricity generation from wind and solar power into the existing grids in a particularly favourable, efficient and demand-oriented manner, thus enabling a significant acceleration of the energy transition.
Video report SWR Fernsehen RP (4:08 min.) from 24.1.2019: "Wohnbiotop muss Sanierung werden - Zukunft von Studierenden-Wohnheim ungewiss" (Residential biotope must be redeveloped - Future of student dormitory uncertain)
SWR film link: www.swr.de/swr-fernsehen/landesschau-rp/Wohnbiotop-muss-saniert-werden-Zukunft-von-Studierenden-Wohnheim-ungewiss,av-o1089451-100.html
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