The housing shortage is an immense social problem in many large cities and conurbations. At the same time, the building sector has been failing to meet its environmental and climate targets for years. In a recent position paper, the Federal Environment Agency (UBA) and the Commission for Sustainable Building at the UBA (KNBau) have examined how more affordable housing can be created without unnecessarily harming the environment and health. According to this paper, the most important factor for more environmental protection in housing construction is that the existing building stock is preserved wherever possible or is sensibly converted and repurposed. This is the easiest way to avoid climate emissions and unnecessarily high consumption of raw materials. Today, UBA President Prof. Dr. Dirk Messner presented KNBau's proposals to Federal Minister of Building Klara Geywitz and Federal Minister of the Environment Steffi Lemke in Berlin.
Kategorie für Blog: Stock
To live up to its climate change pledge under the Paris Agreement, the European Union must ensure that all 250 million existing buildings, as well as all new buildings in the EU, produce near-zero greenhouse gas emissions. In a new report, European national academies of science, through their association EASAC, call for far-reaching policy action. "Policies have long focused on creating energy-efficient buildings that require less heating and air conditioning or generate renewable energy on site. However, the energy used to operate buildings is only part of the story. We need to broaden the scope and look at emissions from building materials and methods - both for new buildings and for building refurbishment," says William Gillett, Director of EASAC's Energy Programme.
In a recently written short study, scientists from the Department of Energy System Analysis at the Fraunhofer Institute for Solar Energy Systems ISE prepared an evaluation of the Market Master Data Register (MaStR) and the EEG system master data for photovoltaics (PV). Important findings of the analyses were that with 38 percent of the newly installed capacity, the increase in capacity in Germany is increasingly taking place in the segment of rooftop systems larger than 100 kW, 22 percent of the newly built PV systems are erected in a west, east or east-west direction and 19 percent of these systems have tilt angles smaller than 20 degrees.
Exploit potential at neighbourhood level!
The KfW programme "Energy-efficient urban refurbishment" promotes integrated energy-efficient neighbourhood concepts and refurbishment management with programme part 432. Programme parts 201 and 202 provide investment support for cross-building and infrastructural supply systems. The Federal Ministry of the Interior, for Building and the Home Affairs provides the funding for the energy refurbishment process from the individual building to the neighbourhood from the Energy and Climate Fund (EKF).Animation from Jan Kamensky (2020)
Half of the city of Berlin belongs to multimillionaires. This is the conclusion of the Rosa Luxemburg Foundation's current study entitled "Who owns the city? Analysis of ownership groups and their business practices on the Berlin real estate market".
Since April 2020, the Öko-Institut has been conducting research into how urban neighbourhoods can be sustainably transformed, using two neighbourhoods in the swarming city of Darmstadt as examples, in the project Transformative Strategies for Integrated Neighbourhood Development (TRASIQ 2). The Federal Ministry of Education and Research is funding the project, which is led by the Öko-Institut and involves the City of Darmstadt, the Institute for Regional and Urban Development Research (ILS) and the "Team Ewen" agency.
Mobility, heat and living space
The project focuses on the research topics of mobility, heat supply and efficient use of living space. Heat supply is an important key to climate-friendly living. How and where, for example, can district heating be expanded in existing properties? How can we increase the share of renewable energies in the heat supply? The size of the living space also contributes to how environmentally friendly a person lives. What needs to be done to ensure that people have the living space they need in their particular phase of life through intelligent apartment swaps? How can neighbourhoods be redesigned so that residents can organise their mobility ecologically?
Dr. Kirsten David, a researcher at HafenCity University (HCU) Hamburg, has developed an innovative method for determining rent increases after energy efficiency measures: By means of functional cost splitting, rent increases become appropriate and comprehensible. The planning of the energetic measures is also ecologically optimized. For her dissertation entitled "Functional Cost Splitting for the Determination of Rent Increases after Energy Efficiency Measures", the scientist today receives the "BUND Research Award 2020". With the research award, the Bund für Umwelt- und Naturschutz (BUND) honors scientific work on sustainable development.
Wohnungsbaugenossenschaft Neues Berlin and Berliner Stadtwerke have agreed on another joint tenant power project. Six solar power systems with an output of around 500 kilowatts are being built in the Mühlengrund housing estate in Hohenschönhausen. Tenants of more than 1,100 apartments will soon be able to benefit from green electricity from their own roofs.
Glaciers are melting, sea levels are rising, heat waves and heavy rainfall are increasing: The consequences of climate change are visible and tangible worldwide, and the window of opportunity to act is shrinking. In order to significantly limit the global effects of climate change, the emission of greenhouse gases on earth must be drastically reduced. The agreement reached by the international community in Paris in 2015 sets the goal of limiting global warming to well below 2 degrees Celsius, but preferably to 1.5 degrees Celsius. Now, the Wuppertal Institute presented a study with possible cornerstones that can help to achieve the 1.5 degree target by 2035. The study shows that a climate-neutral energy system by 2035 is very ambitious, but in principle feasible, provided that all possible strategies from today's perspective are bundled. This requires, above all, bringing forward and intensifying measures that are described in many studies as necessary to achieve greenhouse gas neutrality by 2050.
Annual DIW Heat Monitor based on data from energy service provider ista Deutschland GmbH: Heating energy demand in residential buildings declines again for the first time since 2015 - Rising prices, however, cause heating expenditure to increase by 2.4 percent - CO2emissions have fallen by 21 percent overall since 2010, but by only 2.6 percent when adjusted for temperature - Energy-efficient renovation in residential buildings almost stagnant
Offensive for green electricity: Installation of 1,000 new photovoltaic systems and 2,000 charging points in Deutsche Wohnen neighbourhoods
"The building sector is responsible for around one third of all CO2-emissions in Germany. To achieve a climate-neutral building stock by 2050, the energy refurbishment of existing buildings alone is not enough," explains Michael Zahn, CEO of Deutsche Wohnen SE. "We also need to exploit the technological possibilities for CO2-Reduction to the fullest and open up the opportunity for our tenants to live sustainably."
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".
Climate protection is important to over 80 percent of Germans - but this should not be reflected in higher rental costs. In order to increase the acceptance of energy-efficient renovations, Deutsche Wohnen has developed a model of how climate protection and social compatibility can come together. The "Concept for Socially Compatible Climate Protection in the Building Sector" aims to significantly increase the rate of refurbishment in existing buildings in order to achieve national climate protection targets. At the same time, an economic stimulus package worth billions is being initiated.
On 18 June 2020, the German Bundestag passed the Building Energy Act (GEG) in its third reading. With this law, the federal government is combining the existing requirements of the Energy Saving Ordinance (EnEV), the Renewable Energies Heat Act (EEWärmeG) and the Energy Saving Act (EnEG). For the information programme Zukunft Altbau (Future of Old Buildings), which is supported by the Baden-Württemberg Ministry of the Environment, the specifications of the new law are not ambitious enough. To bring climate-friendly building and renovation nationwide on the way is not possible in the future. "The legislator has missed it to introduce more demanding standards," says Frank Hettler of Zukunft Altbau. "For a sustainable building stock in Germany, however, these are urgently needed to achieve the climate targets." The GEG will now be forwarded to the Bundesrat, which, however, does not require approval, and is expected to come into force by the end of the year.
Min. 4:36; Video from 18.02.2020; Ed.: MWSP Mannheim
Mannheim's conversion is green - this is demonstrated by the work of the municipal development company MWSP on the TURLEY, TAYLOR, FRANKLIN and SPINELLI sites.
Since 1 January 2020, all new buildings and general renovations of the BIG Group have been subject to the Group-wide mandatory minimum sustainable standard. The BIG minimum standard goes beyond the legal requirements and ensures that all projects of BIG and its subsidiary ARE achieve the klimaaktiv SILVER standard in any case. The sustainable minimum standard of the Bundesimmobiliengesellschaft (BIG) is a catalogue of criteria that must already be taken into account in the planning process for buildings. This makes the implementation of 43 measures of the BIG Holistic Building Programme (HBP)* and the achievement of at least 750 klimaaktiv points mandatory for all new construction and general refurbishment projects for which a planning invention procedure will be carried out from 2020. By implementing the minimum standard, CO2 emission values are significantly reduced, climate-damaging building materials are avoided and the phase-out of fossil fuels is accelerated.
Climate protection has long been one of the most urgent topics for the housing industry. In order to achieve a climate-neutral building stock by 2050, the 24 founding companies of the Wohnen.2050 initiative met in Berlin on 28 January 2020 to found the association. The nationwide association was initiated by the Nassauische Heimstätte | Wohnstadt group of companies.
"Don't just talk about climate change, act" - under this motto, the Nassauische Heimstätte | Wohnstadt Group invited founding partners from all over Germany to found the Initiative Wohnen.2050 (IW2050) association. The overarching objective is a climate policy alliance, which, in addition to strategic cooperation and a technical and content-related comparison, primarily focuses on economic and financial concerns to achieve the targets.
Climate protection and socially just construction and housing must be considered together - Legal regulations in the rental housing sector and state subsidy practice undermine climate goals in the building sector - Deutsche Umwelthilfe and Deutscher Mieterbund present 10-point immediate programme for socially acceptable design of energy modernisation in existing and new buildings - KfW subsidy practice must be subjected to a reality check - Social provisions must be supplemented by climate policy requirements
One of the Herculean tasks to achieve the climate targets is to radically reduce CO2 emissions from the heat supply. A group of researchers led by the Institute for Ecological Economy Research (IÖW) shows how cities can turn away from coal, oil and gas in a socially acceptable way. The project "Urban Heat Turnaround" investigated possible contributions from renewable energies and local heat sources in Berlin's urban neighbourhoods. "Waste heat from businesses, heat from waste water or geothermal energy have hardly been used so far.
For almost fifteen years, Rob Hopkins has been developing a method for preparing our societies for the coming upheavals. Video: 5 min, available from 6.12.2019 to 8.12.2021
Dynamic master plan for the Patrick Henry Village presented / Citizen participation from 9 December A central park with a lake in the centre, diversity in architecture and in the use of buildings, energy production directly in the neighbourhood, a ring road, large neighbourhood garages, the public space for it free of parking spaces - these are just a few aspects from [...]
Senate adopts concrete measures for the next ten years and sets new CO2-targets for 2030 and 2050
December 3, 2019. Today, the Senate has set two decisive courses to achieve Hamburg's climate goals with an update of its climate plan and a new climate protection law. CO2 emissions are to fall by 55 percent by 2030, and Hamburg is to become climate-neutral by 2050. The climate plan describes the responsibility and the respective CO2 reduction targets in the sectors "transport", "private households", "trade, services, commerce" and "industry". It contains a large number of concrete measures which are to lead to the necessary reduction of CO2 emissions by 2030. The draft of the new climate protection law creates a binding legal framework for this.
In 2020, the state of Baden-Württemberg intends to support various players in the field of building refurbishment with grants of 10 million as part of the "Climate Protection Plus" funding programme.
24 October 2019 Strengthen energy refurbishment of buildings and demand responsibility from landlords. Housing policy must create supportive framework conditions and thus contribute to the reduction of living space. "For a necessary energy turnaround in the housing industry, conditions must be created that demonstrate tangible incentives for owners and users to consume less energy in the future," [...]
Cooperation between Stadtwerke and berlinovo for largest German tenant power project Mietersonne Kaulsdorf, the largest German tenant power project with a capacity of almost 3.4 megawatts (MW), is being built by Berliner Stadtwerke for the Berlin housing association berlinovo in Marzahn-Hellersdorf. Tenants of 4,300 apartments will be able to benefit from the green electricity generated directly on their roofs.
Eight hectares of modules built on Berlin's roofs, almost half of them on residential buildings Berlin's municipal utilities are clearly picking up the pace in the expansion of solar installations in the capital. The municipal green electricity producer exceeded the 10 megawatt threshold at the end of September.
BUND and the ifeu - Institute for Energy and Environmental Research have produced various studies on building issues over the last 10 years, including "13 measures against energy waste in the boiler room". This study now deals with the core issue of cost allocation for energy modernisation in rented buildings. Already in the year [...]
Closing the implementation and ambition gap Ahead of the crucial meeting on 20.9.2019, the SRU addresses the members of the Climate Cabinet with an Open Letter. The SRU stresses that the measures to be adopted must be suitable for achieving the 2030 climate target. Especially in the transport and building sector there is an enormous need for action. The Council [...]
Like the heat register, the solar register is part of the Energy Atlas.NRW, which provides comprehensive information on renewable energies in North Rhine-Westphalia. In addition to the current stock, potential for the further expansion of renewable energies is also presented.
3:16 min may 2019 Aerial footage from a drone shows the status of implementation in May 2019. The Platensiedlung in Ginnheim (Frankfurt am Main) will be raised with 2 floors without additional land sealing and the existing buildings will be renovated for energy efficiency.
Since September 2018, balcony PV modules may generally be connected in every apartment. Berlin has now greatly simplified the registration process. Berliners can thus become their own energy supplier with little effort and save cash.
Annual press conference of the central association of the housing industry in Berlin 17 June 2019 Annual balance sheet of the housing industry shows great commitment of companies to more affordable housing Housing industry sends alarm signal - conditions for affordable housing still too poor
"Düsseldorfer Erklärung zum Städtebaurecht" (Düsseldorf Declaration on Urban Planning Law) 50 city planning councillors, department heads and heads of planning offices from over 40 German cities, including Hamburg, Hanover, Munich, Cologne, Bochum, Freiburg, Stuttgart and Frankfurt am Main, have signed the "Düsseldorfer Erklärung zum Städtebaurecht" (Düsseldorf Declaration on Urban Planning Law). They are calling for a fundamental amendment of the Building Use Ordinance (BauNVO) and the administrative regulation TA-Lärm, so that in future beautiful and [...]
Augsburg, 22.02.19: Together with partner company EXYTRON, Stadtwerke Augsburg (swa) has installed and commissioned the world's first decentralised power-to-gas plant in an existing residential complex. This enables a challenge of the energy transition to be mastered: surplus, regeneratively generated electricity is converted into synthetic natural gas and can thus be stored on site. Combustion then takes place in a commercially available combined heat and power plant and condensing boilers. In this way, over 180 residents in 70 apartments in the residential complex of the Augsburg housing group, which has existed since 1974, are supplied with climate-friendly electricity and heat.
