Multiple commissioning decided for Freiburg's "Metzgergrün" quarter
Published
In a team with the architects Dietrich|Untertrifaller, the office Ramboll Studio Dreiseitl won the multiple commission from Freiburger Stadtbau GmbH for the Metzgergrün quarter. The estate is to change significantly over the next ten years and develop into a contemporary quarter with around 500 apartments, without losing its original character. The jury praised the design as follows: "This urban composition of residential courtyards, socio-spatial centre, high-quality and differentiated usable open spaces, new interconnections and correct pathways has the potential to create a model and future-oriented quarter."
Since January 2017, building owners who have a residential building constructed and certified in accordance with the requirements of the DGNB have the opportunity to receive a grant for construction support from KfW. This covers 50 percent of the eligible costs up to a maximum of 4,000 euros per building project.
The grant is linked to the KfW product "Energy-efficient construction and refurbishment" and can relate to various services within the scope of DGNB certification, such as auditor services, specialist planning and the performance of measurements of indoor air quality or air tightness.
The parliament of Bremen wants to oblige the use of solar energy on all new and existing buildings in Bremen and Bremerhaven. Whenever the roof surface is completely renewed, they are to be equipped with a solar system in the future. This is photovoltaics and, if necessary, also solar thermal energy. The Senate is currently examining the latter.
According to the solar roof cadastre, the potential is a theoretical peak output of 1,550 MW and an annual electricity generation of 1,410 GWh. If the steel industry is excluded, this corresponds to about 40 % of the current electricity consumption in the state of Bremen. The municipal housing associations should serve as pioneers of solar energy use with tenant electricity and realise corresponding model neighbourhoods.
According to Solarserver.de, this makes Bremen the Hamburg, Baden-Württemberg and Berlin the fourth federal state to tackle a solar obligation.
In December 2020, the German Timber Industry Association (HDH) launched the "Initiative for Climate Protection in the Timber Industry". The aim is to support the industry companies in the necessary reduction of CO2 emissions. The initiative is now being further developed into an innovation cluster.
"We started with the claim to offer companies CO2 accounting and to accompany them to certified climate neutrality," says HDH CEO Denny Ohnesorge. "The response has been overwhelming: more than 40 companies have joined the initiative so far. We quickly realised that this can only be a first step. Climate neutrality is good, but further reducing energy consumption in processes and thus saving energy and greenhouse gases is even better. The best energy is the energy that is not consumed.
Under this motto, an Erfa group is to be established within the framework of the cluster and concrete ideas and measures are to be developed with the participation of consultants, service providers and science. This promotes the transfer of knowledge in this subject area and helps the companies to identify further CO2 saving opportunities in all operational areas, to introduce process innovations and to initiate corresponding projects. The innovation cluster will start with three online seminars for all interested parties:
1st CO2 balancing: 08.11.2021, 15-16 hrs
2. climate strategy for companies: 06.12.2021, 3 - 4 p.m.
3. sustainable mobility concepts for companies, 13.12.2021, 3 - 4 p.m.
The HDH is supported by the Gesellschaft für Klimaschutz Holzindustrie - GKH GmbH, which also carries out the certification of climate neutrality according to internationally recognised standards. Further information is provided on the website of the industry initiative climateprotectionwoodindustry.com and on woodindustry.com published. The establishment of the innovation cluster is supported by the Agency of Renewable Resources (Fachagentur Nachwachsende Rohstoffe e. V.). (FNR) and funded by the Federal Ministry of Food and Agriculture.
The complete Programme of the seminar series and all information about registration is available here.
Background
In December 2020, the German Association of the Wood and Plastics Processing Industries and Related Industries (HDH) launched the CLIMATE PROTECTION IN THE WOOD INDUSTRY initiative. The goal: to support companies in making their contribution to climate protection by reducing greenhouse gases - for a climate-neutral industry. The initiative builds on the experiences of the climate pact of the furniture industry. Against the background of increasingly important climate protection measures, it is an offer to all companies in the sector to become climate neutral with the support of the HDH and its member associations.
Berlin, 9 January 2020 - One of the Herculean tasks in achieving the climate targets is to radically reduce CO2 emissions from the heating supply. A research group led by the Institute for Ecological Economy Research (IÖW) is showing how cities can move away from coal, oil and gas in a socially responsible way. The "Urban Heat Transition" project analysed possible contributions from renewable energies and local heat sources in Berlin's urban districts. "Waste heat from businesses, heat from waste water or geothermal energy have hardly been utilised to date. The key to such environmentally friendly heat are neighbourhood concepts and heating networks," says project manager Bernd Hirschl from the IÖW. "An important prerequisite is a more efficient building stock. Only if the heat demand is significantly reduced can environmentally friendly heat sources be utilised efficiently."
In the three-year project, the project team from the IÖW, the University of Bremen and the Technical University of Berlin worked together with the Berlin Senate Department for the Environment, Transport and Climate Protection with funding from the Federal Ministry of Education and Research to develop local heating concepts for three Berlin neighbourhoods. At the end of 2019, they discussed their results with the heating industry in Berlin, and the documentation of the conference is now available online at www.urbane-waermewende.de.
Developing nuclei for the heat transition
"Previous neighbourhood concepts were often too complex, had too many different stakeholders and often ended up in a drawer. That's why we recommend a nucleus approach," says Elisa Dunkelberg from the IÖW. These could be public buildings, new construction projects, commercial buildings or housing associations and co-operatives.
The researchers show what a neighbourhood concept can look like for an old building district in Charlottenburg-Wilmersdorf: Firstly, the heat demand must be reduced through energy-efficient refurbishment. The heat can be generated using a wastewater heat pump, which is partly powered by solar electricity generated on site, in combination with combined heat and power generation. "Particularly in the case of public buildings, which have a pioneering role - enshrined in law in Berlin - it should always be checked in the case of refurbishment and new buildings whether they are suitable as a nucleus for a neighbourhood concept and the co-supply of surrounding buildings," emphasises Dunkelberg.
Climate-neutral district heating: utilising waste heat and renewables
District heating plays a major role in urban areas. "To become climate-neutral, it is important to integrate more local heat sources from wastewater, river water and geothermal energy as well as waste heat into district heating," says Hirschl, adding that attention must also be paid to the resilience of the heat generation system. A joint case study with the Neukölln district heating plant shows that it is possible to utilise local heat sources. But it needs to be tested technically and requires supporting financial measures. The next steps should now be test drilling for deep geothermal energy, for example, as well as pilot plants that use large heat pumps to provide wastewater or river water heat for district heating. Strategies for funding and risk protection are needed for investment in these technologies, some of which are untested and highly expensive.
Heat transition requires municipal strategic heat planning - and social compatibility
"Municipal heat planning, which has long been standard practice in pioneering countries such as Denmark and in other federal states and municipalities for some time, helps to tap into the identified potential," emphasises Hirschl. The basis for this is a heat register that visualises heat sources such as waste water and commercial waste heat. This can also be used to identify neighbourhoods for cross-building concepts. With sector coupling, it is also important that local authorities and cities plan across infrastructures. Instruments such as urban land-use planning and urban development contracts must be geared towards climate neutrality.
Low refurbishment rates in recent years show that purely incentive-based measures are not enough to ensure energy modernisation. The researchers therefore recommend implementing the regulations more strongly and developing a step-by-step plan to guide the building stock towards climate neutrality. At the same time, subsidies must be increased and conditions for passing on rent must be made more socially acceptable. A step-by-step plan under the conditions of a rent cap must be designed in such a way that energy modernisation is economically reasonable for both landlords and tenants.
Federal Ministry of Education and Research funds "Urban Heat Transition" project for another two years
The Federal Ministry of Education and Research is funding the project in a new partner constellation for a further two years in order to test solution strategies for the central obstacles to implementation and to anchor the research results in municipal heat planning. In addition to the IÖW, the partners are Berliner Wasserbetriebe and the law firm Becker Büttner Held.
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