BBSR document "Developing neighbourhoods in an energy-efficient way".
Published
From building to neighbourhood: The current issue of the specialist journal "Information on Spatial Development" (IzR), published by the Federal Institute for Research on Building, Urban Affairs and Spatial Development (BBSR), shows how entire urban districts can be developed in a climate-friendly and energy-efficient way.
Based on the KfW programme "Energetic Urban Redevelopment", scientists, urban planners and architects report in this issue on approaches for neighbourhoods that they have tested over six years in initiatives and projects such as TransStadt, Sandy or EnEff:Stadt. The projects focus on integrated concepts, innovative technologies and instruments for energy-efficient refurbishment and owner participation.
The authors show how local governments, redevelopment agencies, municipal housing companies, and individual homeowners in urban districts can save energy and expand renewable energies across buildings, linking topics such as urban development, housing construction, and historic preservation. They look at the relationships between the local players and evaluate the economic viability and acceptance of projects. The focus is also on personnel, money, know-how and the question of how much of this the municipalities need for implementation.
"The articles in this issue illustrate how busy municipalities are working on the energy refurbishment of their neighbourhoods," says BBSR expert Wolfgang Neußer, who provides scientific support for KfW's Programme 432 "Energy-related urban refurbishment". "In order for the energy transition to succeed on the ground, we need to constantly include energy issues in integrated neighbourhood approaches to urban development."
But do the projects actually achieve the intended goals? How can listed buildings be renovated to be energy-efficient? And how can municipalities achieve the heat turnaround? The authors address these and many other questions in analyses, commentaries and interviews.
The booklet can be ordered for 19 Euro plus shipping costs:
service@steiner-verlag.de.
Permaculture
In this video from October 2012, the two pioneers of new ways of economy and life Margrit (who died in 2011) and her husband Declan Kennedy, explain in 6 minutes the basic principles of permaculture. The recordings were made at Margrit and Declan Kennedy's home in the Lebensgarten Steyerberg:
The prize has been organised since 2005 by the Senator for the Environment, Building and Transport in cooperation with the Federal Chamber of Architects. Previously known as the Bremer Bauherrenpreis, the competition recognises the commitment of builders in Bremen and Bremerhaven. The aim is to showcase the range of services offered by housing construction in the state of Bremen and to provide impetus for future building projects.
The next award ceremony will take place in spring 2018.
Mayor Michael Grötsch; State Environment Minister Franz Untersteller; Karl-heinz Frings, Managing Director of GBG; Martin in der Beek, Technical Managing Director of rnv; Gregor Kiefer, Head of Construction Management, GBG. Photo: City of Mannheim / Markus Proßwitz
The city is to become cleaner and quieter: Under the heading "blue_village_Franklin", important future topics such as new mobility, energy efficiency, climate-optimised living or smart grids are being tested with the conversion of the former military area FRANKLIN. The SQUARE project, two model houses renovated according to the latest energy standards, and the electromobile bus lines 66 and 67 are part of this master plan. Franz Untersteller MdL, State Minister for the Environment, Climate and Energy Management, visited the two model projects in the new urban quarter on Tuesday, 4 August, as part of his summer tour "Environmental Future".
"With SQUARE, the city of Mannheim and the Mannheim housing association are showing a way to design climate- and energy-optimised living in existing buildings," said the Environment Minister during his visit. "It is impressive to see what has been implemented here in terms of building refurbishment, electromobility and smart grids. And it will be exciting to evaluate the results of this model project and make them usable for other projects."
Lord Mayor Dr. Peter Kurz explains: "With Franklin, an ecological urban quarter for over 9,000 people is being created that will set new standards. Our goal is to consume as little energy as possible throughout the district, to generate as much renewable energy locally as possible and to cause as few emissions as possible. In this context, the SQUARE model project presents two interesting approaches to solutions."
Back in 2014, the model project for energy-efficient building refurbishment SQUARE (smart quarter and urban area reducing emissions) was awarded a prize in the "Klimaschutz mit System" (Climate Protection with a System) competition run by the Baden-Württemberg Ministry of the Environment. The SQUARE project application was prepared by the City of Mannheim's Economic Development Department in cooperation with the Climate Protection Control Centre. Thanks to the award, SQUARE was able to be included in the ERDF funding programme at the time and supported with three million euros. "SQUARE stands for one of the most ambitious projects in the field of GreenTech and climate protection in the city of Mannheim in the past decade. It is one of the pioneering projects developed from the "Blue City Mannheim" strategy concept of the Economic Development Department. The green tech innovation strategy from 2013 is still highly topical and sets the course for climate-neutral mobility and smart grids," emphasizes Mayor Michael Grötsch.
GBG - Mannheimer Wohnungsbaugesellschaft finally successfully implemented the model project on FRANKLIN. The first tenants moved in at the end of 2019. The two almost identical buildings were renovated according to different standards, one building according to the EnEV standard (SQUARE now), the second building with passive house elements according to an EnerPhIT standard (SQUARE next). Technologies such as smart grids, seasonal heat storage using ice storage and intelligent mobility concepts are being tested. The total of 48 rental apartments are spread across 3- to 5-room apartments between 84 and 109 sqm. "We are very excited about the insights we will gain through SQUARE. According to the calculations and simulations, we can achieve a CO2 saving of more than 50 percent in the comparison of the two buildings. In order to be able to save even more CO2, we are relying on the generation of regenerative energies. The ENEV building therefore received a photovoltaic system, the EnerPhIT building a solar thermal system," explains Karl-Heinz Frings, Managing Director of GBG.
"This is where the city of the future with the energy system of the future is being created," explains Bernhard Schumacher, head of the Smart Cities business unit at Mannheim-based energy company MVV. To this end, MVV is using smart technologies and the new possibilities of digitalisation on Franklin and is linking the various sectors intelligently and efficiently with each other - "not only to bring electricity, water, heat and mobility to the district, but also to make the new district the beacon of a necessary energy turnaround at the same time". MVV is also demonstrating what is already possible today in terms of electromobility on Franklin. In addition to environmentally friendly car-sharing solutions, such as FRANKLIN mobil, publicly accessible charging points are being set up, which will be networked with the energy management system and made more flexible. At the same time, the heating sector also plays an indispensable role. MVV has therefore built an innovative low-temperature heating grid here, which also enables the efficient integration of renewable energies.
Another item on the agenda of the visit is the three electric buses of the type E-Citaro, which have been in operation in Franklin on line 67 since April 2019. One of the buses was also funded under SQUARE. The environmentally friendly buses run every 20 minutes between the conversion areas on Franklin and the Käfertal Bahnhof stop. This will give people who already live, work or go to school in Franklin a direct connection to the rnv public transport network. "We are delighted to have EvoBus as a strong partner for this forward-looking project right on the spot," says Martin in der Beek, Technical Managing Director of rnv. "Over the past year, we have gained a lot of valuable knowledge in the operation of conventional electric buses and at the same time proved that the technology can stand up to the rigours of everyday public transport." In the future, however, other forms of propulsion will also be examined, he added. "We are currently looking intensively at the use of hydrogen buses in public transport and will soon be testing this technology at the rnv," reveals in der Beek. "Traveling by public transport is already more environmentally friendly per se than traveling by car, but we want to do even more for climate protection and therefore also convert our vehicle fleet to emission-free drives as far as possible."
The discussion about climate change and the growing demand for living space have increasingly brought timber construction into the focus of planners, architects and developers over the past year. After all, sustainable timber construction can make a significant contribution to climate protection and the creation of living space. The increased interest in timber construction is also reflected in the industry figures: the turnover of companies grew by 7 percent in 2019 compared to the previous year, the number of employees increased from around 68,000 to around 70,000 and the timber construction rate continued to grow in both residential (new construction) and non-residential (new construction) construction.
Holzbau Deutschland has published these and other facts, figures and forecasts on the structure of the sector, market and economic trends, the business situation and financing, as well as training and careers in the carpentry and timber construction trades in its "Situation Report Carpenters / Timber Construction 2020" published. It can be downloaded free of charge from the Association's website in the Business Administration section.
Even after Corona: Continue to drive forward climate protection
At the conclusion of the 11th Petersberg Climate Dialogue last week, German Chancellor Angela Merkel appealed that in the period after the Corona crisis, "when we launch economic stimulus packages, we should always keep climate protection firmly in mind and make it clear that we are not cutting back on climate protection, but investing in technologies that are fit for the future."
Timber construction has long been one of the sustainable technologies that can make an essential contribution to achieving climate protection goals. "Ecological, sustainable and resource-saving construction with wood must therefore continue to be the focus in residential construction as well as in redensification and gap filling in existing buildings. In order for timber construction to be recognized as an alternative on an equal footing with other construction methods, the framework conditions must be further improved and the building codes of the federal states must be adapted to the current state of the art," demanded Peter Aicher, Chairman of Holzbau Deutschland.
The current and further development in timber construction
Until the outbreak of the Corona pandemic, the mood in the timber construction industry was good. The satisfaction of carpentry and timber construction companies is also reflected in the Holzbau Deutschland business survey, in which almost 370 companies took part at the turn of the year 2019/2020. Their order backlog at the beginning of the year already averaged 17 weeks (previous year 15 weeks). The current exceptional situation in the wake of the Corona pandemic has not changed this much: According to recent surveys, most businesses are going about their work without any significant restrictions and in compliance with clearance and hygiene rules. Builders are also sticking to their construction projects. Many timber construction companies are currently benefiting from the existing high order backlog. For some of them, the workload will last until next year.
How turnover in timber construction will develop in 2020 and beyond, and what impact the Corona pandemic will have, cannot be reliably assessed at the present time. Regardless of the current situation, the timber construction industry has assumed a further 5 percent increase in sales by the beginning of March. The value is also based on the cautious confidence of the entrepreneurs from the economic survey of Holzbau Deutschland.
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