Kategorie für Blog: Tools

DIN recommendations for the planning of resource-efficient buildings

Sustainable development in Germany is inconceivable without a resource-efficient construction industry. The new expert recommendation VDI-EE 4802 Sheet 1 explains in a practical way how to apply the concept of resource efficiency in the life cycle of buildings. To this end, it breaks down the tasks and scope for action of the individual players in the construction process. Using examples of increased material, energy and space efficiency, the expert recommendation supports the entire planning process towards a resource-efficient building.

"International Day of Forests" on 21 March

Storms, drought and insect infestations have caused a great deal of damage to Germany's forests over the past three years. The "International Day of Forests" on 21 March is a good time to become aware of the many services provided by the forest.

Video (2021; 38 min.) KuRT Online Tutorial (Factor X Assessment Tool)

38:24 min, from 11.03.2021

In this tutorial, Anne Albrecht, building consultant at Faktor X Agentur, shows you in detail how to enter an example house in massive construction into the climate and resource protection tool (KuRT) from start to finish.

A4F Webinar "Building Evaluation with the Resource Score" (11/2020)

1 h 03 min., published: 18.11.2020

Klaus Dosch (Faktor X Agentur + ResScore GmbH) presents the Resource-Score, a pragmatic and generally understandable label for resource- and climate-friendly building.

Construction projects or more information on the subject:

Alliance for more climate protection in the construction sector: Federal government must address savings potential in construction and waste disposal

A broad alliance of actors from civil society, science, industry and practice is calling on the German government to promote the climate-friendly construction, maintenance and demolition of buildings. Up to now, only the use phase of buildings has been taken into account in state subsidies for buildings and in the Building Energy Act. There is a complete lack of specifications and consideration of the climate impact of building materials and the construction and disposal of buildings - despite the fact that the construction sector, with its upstream and downstream processes, contributes around 8 percent to German greenhouse gas emissions.

Book review "Wohnquartier in Holz - Mustersiedlung in München" DBU Bauband 4

The ecological model settlement on a former barracks site in Munich sets new standards in timber construction. Various timber construction methods and building types up to seven storeys are being tested side by side in eight building projects with the aim of a final scientific evaluation. Timber frame, timber frame and timber hybrid construction methods are being used.

Book review "Commercial buildings in clay and wood - added value through material" DBU BauBand 3

Clay and wood in commercial construction are the exception today. But why? Because it is precisely here that these ecological building materials promise many advantages. The examples presented in this publication have one thing in common: they generate enormous added value through the material used in each case. Sometimes the focus is on flexibility and prefabrication, sometimes on the indoor climate or comfort factors, sometimes on durability, user satisfaction, the CO2 balance, recyclability - and sometimes all of these together.

TRASIQ 2: Transformative strategies for integrated neighbourhood development

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?

Amandus Samsøe Sattler elected as new DGNB President

With the architect Amandus Samsøe Sattler, the German Sustainable Building Council - DGNB e.V. has a new president. In this role, he succeeds Prof. Alexander Rudolphi, who will continue his work on the association's executive committee. The change was announced today during the DGNB Sustainability Day in Stuttgart. The election was held on the eve of the event by the ten members of the DGNB Executive Committee. Samsøe Sattler will initially take over the office until the next DGNB general meeting in the middle of next year.

Greens: Federal government's raw materials policy is treading water

Dieter Janecek, Spokesperson for Industrial Policy and the Digital Economy, and Dr. Bettina Hoffmann, Spokesperson for Environmental Policy and Environmental Health, comment on today's cabinet meeting and the planned discussion of the draft German Resource Efficiency Programme III (ProgRess III):

With ProgRess III, the German government is treading water. Two resource efficiency programmes of the Federal Government could not prevent the German consumption of raw materials from continuing to rise. It is foreseeable that the third resource programme of the Federal Government will not change this situation either. ProgRess III also remains a longish hodgepodge of plans, announcements and test orders.

BIG sets new standard for sustainable real estate development

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 of buildings. This makes the implementation of 43 measures of the BIG Holistic Building Program (HBP)* and the achievement of at least 750 klimaaktiv points mandatory for all new construction and general refurbishment projects for which a plan invention procedure will be carried out from 2020.
By implementing the minimum standard, CO2 emission levels will be significantly reduced, climate-damaging building materials will be avoided and the phase-out of fossil fuels will be accelerated.

ifeu study "Recyclable Insulation Materials

A research project conducted by natureplus in conjunction with IFEU compares insulation materials with regard to their environmental impact throughout their entire life cycle, including recovery and recycling.

Which insulation material is the best? This question is extremely popular in the construction industry and can ultimately only be answered in the context of the respective construction. In particular, there has so far been a lack of a holistic overview that enables builders and planners to identify the strengths and weaknesses of the various insulation material alternatives in terms of their life cycle assessment, without having to disregard subsequent disposal.

Buildings with wood as a construction material can become a global CO2 sink

27.01.2020 A material revolution that replaces cement and steel with wood in urban construction can have double benefits for climate stabilization. This is now shown in a study by an international team of scientists. First, it can avoid greenhouse gas emissions from cement and steel production. Secondly, it can turn buildings into carbon sinks, since in the construction timber the CO2 is stored. Although the required amount of wood is theoretically available, such an expansion would require very careful sustainable forest management, the authors emphasize.

Agora Energiewende's 2019 Year in Review: Greenhouse gas emissions and coal-fired power generation at record lows in 2019

The share of renewable energies in electricity consumption rises to almost 43 percent. The climate protection successes in the electricity sector are diminished by rising greenhouse gas emissions in buildings and transport. In parallel, public interest in climate protection is rising: since May 2019, it has consistently been the most pressing political issue in the eyes of the population. This is shown by Agora Energiewende's 2019 annual evaluation.

Hamburg's new climate plan and new climate protection law

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.

Bavaria could cover its electricity needs with renewables on a balance sheet basis

Decentrally generated electricity from renewable energies can cover the demand for electrical energy in Bavaria both in balance and in perspective. This is the result of a joint study by the grid operators Bayernwerk Netz GmbH (Bayernwerk), LEW Verteilnetz GmbH (LVN) and Main-Donau Netzgesellschaft. The Bavarian power grid operators have analysed which development paths are possible for Bavaria with regard to renewable power generation and whether climate neutrality can be achieved in the power sector. The grid operators received scientific support from the Forschungsstelle für Energiewirtschaft e.V. (Research Centre for Energy Economics).

Video portrait (2019) of the Factor X settlement; BMU Climate Protection Prize

The city of Eschweiler (North Rhine-Westphalia) has been awarded the climate protection prize "Klimaaktive Kommune 2019″ by the Federal Environment Ministry in category 1: "Resource and energy efficiency in the municipality". The city of Eschweiler is committed to more resource and climate protection with its Factor X construction areas.


Film about the Faktor X housing estate in Eschweiler:

(6:25 min.) published on Nov 5, 2019

The prize is awarded by the Federal Environment Ministry (BMU) as part of the National Climate Initiative (NKI), which is implemented by the German Institute of Urban Affairs gGmbh (DIFU).

More information about the climate protection award "Climate Active Community 2019″ is available on the website of the National Climate Protection Initiative of the Federal Government :

Project Info: https://sdg21.eu/db/neue-hoefe-duerwiss

All Factor X settlements:

TÜV confirms top climate balance for solar films

Dresden, 22.10.2019 Heliatek, the world's leading provider of organic solar energy solutions, announces that its award-winning technology has been certified by TÜV Rheinland as having a carbon footprint of less than 16 kg CO2e/m2 in a Life Cycle Assessment (LCA). For a sustainable future in an ever more [...]

Freiburg launches timber construction offensive

With the timber construction funding program, the city wants to promote concrete timber buildings, especially in residential construction Timber Construction Guide presents 29 realized and forward-looking timber construction projects in Freiburg More climate protection with the renewable raw material wood. Timber construction in Freiburg is an important instrument for climate protection and indispensable for achieving the city's ambitious climate protection goals. […]

"Klimatarier" climate balance calculator for eating styles

The carbon footprint calculator developed by the ifeu Institute in Heidelberg can be used to calculate the greenhouse gas emissions of food. The website also provides tips and advice on how to become a "climatarian", i.e. how to adopt a climate-friendly diet. The CO2 foodprint is calculated. This is the proportion of one's CO2 emissions that are caused by food. Link www.klimatarier.com/de/CO2_Rechner

Europe: independent with solar power

According to a new study by EU scientists, one percent of the EU's surface area is enough to cover the community's entire electricity needs with solar power. https://www.solarserver.de/solar-magazin/nachrichten/aktuelles/2019/kw40/europa-unabhaengig-mit-solarstrom.html

For climate protection: Berlin builds with wood

From the meeting of the Berlin Senate on 24 September 2019: At its meeting today, the Senate adopted the report to the House of Representatives on "Sustainability in construction: Berlin builds with wood", following a presentation by the Senator for the Environment, Transport and Climate Protection, Regine Günther. The Senate is consistently pursuing the goal of making Berlin [...]

The Energy Atlas.NRW with the solar and heat cadastre

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.

Calculate factor X online

With funding from the federal support programme "Unternehmen Revier", the Factor X agency of the development company has developed an internet-based tool for the simple calculation of the resource efficiency of one's own building project. The tool has now undergone final testing and will be available online from September.

Video (2018) "Factor X Settlement Inden Seeviertel"

2:33 Min. 17.12.2018, Ed.: KlimaExpo.NRW

The construction sector is one of the biggest consumers of resources in Germany. With the "Seeviertel" new housing development, the municipality of Inden in the Rhenish lignite mining region, together with RWE Power, the Aachen-based Kathy Beys Foundation and the development company indeland GmbH, has set itself the goal of halving resource consumption. As the first settlement of its kind in Germany, the Seeviertel demonstrates how energy efficiency and resource conservation can be integrated into neighbourhood development right from the ground-breaking ceremony.

Project Info: https://sdg21.eu/db/inden-seeviertel

Show all Factor X settlements:

Video (2018) Lecture by Prof. Austmann on the great transformation.

1 h 00 min, 11/2018

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.

Further information:

ISFH publishes tenant electricity calculation tool

The Institute for Solar Energy Research (ISFH) has presented a free tool for the individual design and holistic evaluation of tenant electricity concepts. These offer tenants in apartment buildings the opportunity to benefit from cheap renewable electricity generated on site. However, the economic viability depends on a large number of factors, which is why tenant electricity providers can hardly estimate whether [...]

Wooden buildings: New life cycle assessment study

The study "Greenhouse Gas Balancing of Timber Buildings -Implementation of New Requirements for Life Cycle Assessments and Determination of Empirical Substitution Factors (GHG Timber Construction)" led by Prof. Dr. Annette Hafner (RuhrUni Bochum) has now been published. Download: http://forum-holzbau.com/nl_pdf/nl134_rub.pdf

Pioneering resolution of the Conference of Environment Ministers on timber construction

The 88th Conference of Environment Ministers has just passed a resolution in Bad Saarow on the "Promotion of Building with Wood", which was introduced by Rhineland-Palatinate. The document calls on the federal government to improve the framework conditions for timber construction. As the environmental minister of Rhineland-Palatinate reports, among other things, the positive climate protection properties of renewable raw materials are to be taken into account in the building energy [...]

RAL seal of quality "CO2-reducing timber buildings

Since February 2017, the houses of Chiemgauer Holzhaus have been able to distinguish themselves with the RAL quality mark GZ 425. This is because the solid wood houses achieve a GWP (Global Warming Potential) value of less than zero in their carbon footprint. This has been tested by the "Gütegemeinschaft CO2 neutrale Bauwerke in Holz e.V.". Taking into account all the necessary materials, such as [...]


The Federal Institute for Research on Building, Urban Affairs and Spatial Development (BBSR) has published two brochures providing information on the portals ÖKOBAUDAT and WECOBIS. WECOBIS - Web-based ecological building materials information system Download (PDF, 5MB) www.bbsr.bund.de/...2014-16/band-07-dl.pdf ÖKOBAUDAT - Basis for life cycle assessment Download (PDF, 7MB) www.bbsr.bund.de/...2017/band-09-dl.pdf

ifeu life cycle assessment of electric cars

In contrast to combustion engines, the amount of energy required to produce the batteries plays a greater role in electric cars. According to the IFEU Institute in Heidelberg, CO2 emissions can be estimated at around 125 kg for one kWh of battery capacity. The production of an electricity storage unit with 24 kWh thus generates about three tons of CO2. In contrast, the resulting [...]

DBU study on climate characteristics of timber buildings

The study "Method development for the description of target values for primary energy consumption and CO2 equivalent of building constructions for linking with property allocation and quality assurance up to design planning" of the RuhrUni Bochum under the direction of Prof. Dr. Annette Hafner has now been published and is available for download. Download: www.ruhr-uni-bochum.de/...2016_dbu-abschlussbericht...pdf