immo!nvest – Die Plattform für Standorte und Immobilien

Category: Sustainability

  • Berner Kantonalbank cooperates with Neustark

    Berner Kantonalbank cooperates with Neustark

    Berner Kantonalbank(BEKB) is promoting CO2 storage facilities in the Bern-Solothurn region. To this end, it has agreed a cooperation with the Bernese start-up Neustark, according to a press release. The aim is to support its innovative technology for the permanent storage of CO2 in demolition concrete. The aim is to remove around 1,000 tonnes of CO2 from the atmosphere in the BEKB economic area over the next ten years.

    Neustark, a spin-off from the Swiss Federal Institute of Technology in Zurich founded in 2019, is the first company in the world to put carbon removal through mineralisation in demolition concrete into commercial practice and set up a network of storage facilities, according to the press release. In the summer of 2023, the largest plant to date in the BEKB economic area was put into operation in Biberist, Solothurn. Further facilities in the region are being planned. “Through our cooperation, we are not only promoting innovative technologies to achieve climate targets, we are also contributing to the circular economy in the region and making it possible to permanently remove CO2 emissions in our own economic area,” BEKB CEO Armin Brun is quoted as saying.

    In 2022, BEKB’s operational CO2 emissions amounted to 1153 tonnes. These are to be further reduced through various measures. Through this cooperation with Neustark, the bank will permanently remove 100 tonnes of CO2 from its operational emissions in its own economic area every year from 2024. According to the information provided, these are the estimated residual emissions that are unavoidable for BEKB and cannot be reduced in the future.

  • ETH project aims to make ultra-green concrete accessible worldwide

    ETH project aims to make ultra-green concrete accessible worldwide

    With its Ultra Green Concrete project, ETH aims to make low-CO2 high-performance concrete generally accessible. The researchers led by Franco Zunino, Senior Scientist at the ETH Institute for Building Materials, are adopting an approach from the Swiss Federal Institute of Technology in Lausanne: There, a cement formulation (LC3) of 50 per cent clinker with a combination of fired clay and limestone was found to save around 40 per cent CO2 compared to conventional cement. Zunino was involved in this development.

    In the ETH project, he is now focussing on a second strategy to save CO2: reducing the proportion of cement in the concrete. This dual strategy offers flexibility to adapt low-carbon concrete compositions to individual markets, according to a statement from ETH. “It would be ideal to implement both at the same time,” Zunino is quoted as saying. However, this is difficult in some markets, “as production capacities and infrastructure have to be built up. Nevertheless, it is possible to realise at least one of them and still save CO2.”

    According to calculations by Zunino and his team, the CO2 emissions of ultra-green concrete can be reduced from 300 to around 80 to 100 kilograms per cubic metre without compromising the performance of the material. In his opinion, there are therefore no excuses in industrialised countries for not switching to the new, more sustainable building material immediately.

    The low-CO2 cement is also more durable and cheaper than conventional cement. Its production is reportedly already underway in seven cement plants worldwide. Zunino is convinced that LC3 will be the most widely used type of cement worldwide in ten years’ time.

  • Impact Acoustic and atelier oï create acoustic luminaire

    Impact Acoustic and atelier oï create acoustic luminaire

    The collaboration between Impact Acoustic and atelier oï has resulted in the sustainable acoustic luminaire Oloïd, which “combines acoustic excellence with intuitive design”. According to a press release from Impact Acoustic, both companies contributed their expertise in the fields of acoustics, material science and design innovation to the development process. The “innovative design” of Oloïd “paired with outstanding acoustics” redefines “the way light and sound interact”.

    Oloïd utilises the capabilities of ARCHISONIC Felt panels, the high-performance sound absorber developed by Impact Acoustic from recycled single-use PET bottles. “To create organic shapes, we had to push the limits of the material’s properties,” Aurel Aebi, one of the atelier oï founders, is quoted as saying on Impact Acoustic’s website. “Our aim in working with Impact Acoustic was also to gain an understanding of the machine used in the production process and to explore its potential for new, creative applications.”

    This collaboration was fascinating, says Sven Erni, co-founder of Impact Acoustic, “as we were able to observe the metamorphosis of our material. This was made possible by a special cutting technique at certain angles and the skilful folding of the panels.”

    This year, Impact Acoustic took first place among all companies in the construction industry, first place among all companies in Central Switzerland and 11th place among all companies in Switzerland in the ranking of the most innovative companies in Switzerland 2024 compiled by the Swiss business magazines “Bilanz” and “PME” and the market research institute Statista.

  • Limehome comes to Switzerland

    Limehome comes to Switzerland

    Munich-based hospitality tech company limehome is expanding into Switzerland. To enter the market, the provider of digitalised design flats has secured a project not far from Bahnhofstrasse in Zurich together with a Swiss investor group, limehome announced in a press release. Here, limehome flats are to be built on four floors in an existing building. The suites are expected to be available to book from mid-2024.

    At the same time as entering the Swiss market, limehome is also expanding its presence to Italy and Greece. “We want to offer our exceptional guest experience throughout Europe in the long term,” limehome CEO Josef Vollmayr is quoted as saying in the press release. In addition to leisure tourism, the business location of Zurich is also of interest to the company as an attractive destination for business travellers.

    In the long term, limehome wants to expand its offering to as many smaller cities as possible. To this end, the company is currently looking for new projects in over 500 locations across Europe, explains Ricky Bichel, Head of International Expansion at limehome. “We are already holding the first promising talks with partners in Switzerland, for example.”

  • SSF presents ESG guidelines for property investments

    SSF presents ESG guidelines for property investments

    SSF ‘s new publication provides guidance on how to integrate sustainability factors into direct property investments. According to a press release, the SSF Spotlight publication entitled Sustainable Real Estate Investments offers concrete instructions on how investment decisions can be harmonised with the ESG (Environmental, Social, Governance) criteria for sustainable management. It is also intended to provide orientation in the diverse landscape of labels, benchmarking and monitoring tools. The publication was produced in collaboration with the ZHAW School of Management and Law at the Zurich University of Applied Sciences(ZHAW).

    SSF points out that residential and commercial buildings are responsible for almost a quarter of Switzerland’s CO2 emissions. And it emphasises that incorporating sustainability into real estate brings numerous benefits: higher rental income, lower vacancy rates, improved operational efficiency of real estate investments and portfolios and attractive economic positioning.

    “With Switzerland now legally committed to the net zero target, it is crucial for property investors to develop clear strategies to reduce the carbon footprint of their portfolio,” SSF CEO Sabine Döbeli is quoted as saying. In addition, the integration of ESG factors into risk analyses can reduce risks, increase resilience to environmental and market fluctuations and contribute to a more stable investment environment.

  • FHNW launches three new degree programmes on sustainability

    FHNW launches three new degree programmes on sustainability

    From this autumn, the University of Applied Sciences Northwestern Switzerland will be offering three new courses in the Bachelor’s degree programme in Energy and Environmental Technology. According to a press release, the aim is to equip students with the skills they need to develop solutions to current sustainability challenges. The programme is available as a full-time, part-time, part-time or practice-integrated Bachelor’s degree course. Practical relevance is taught in projects with companies from industry and business.

    The three new degree programmes offered at the Brugg-Windisch campus and in Muttenz BL are: Sustainable Buildings and Cities, Circular Economy and Resource Management and Renewable Energies and Energy Systems.

    According to the Sustainable Buildings and Cities degree programme, buildings are responsible for around 40 percent of Switzerland’s energy consumption and bind enormous quantities of raw materials that are not yet sufficiently recovered and recycled in a closed-loop process. At the same time, the hot summers show how important intelligently planned and optimised cities are to counteract high temperatures.

    Intelligent cycles that are as closed as possible and the ecologically and socially sustainable use of resources are the focus of the Circular Economy and Resource Management degree programme. A sustainable economy must be based on circular thinking.

    The Renewable Energies and Energy Systems degree programme focuses on the future of energy. Students are given the tools they need to design innovative technical solutions such as photovoltaics, wind and water, as well as the entire energy system from control and regulation to transmission, storage and conversion, such as power-to-gas.

  • Die clevere Alternative zu Erdgas und Heizöl in Ilanz

    Die Komplexität und raschen Veränderungen stellen nicht nur Immobilieneigentümerschaften und Unternehmen vor Herausforderungen, sondern auch Gemeinden und Städte. Nah- und Fernwärmenetze werden als intelligente Alternative zu Erdgas und Heizöl immer wichtiger, da sie alle Anforderungen erfüllen und zusätzlich lokale Wertschöpfung ermöglichen.

    Vielseitige Energiequellen
    Nah- und Fernwärmenetze können mit verschiedenen Energiequellen betrieben werden und sind daher nahezu überall umsetzbar. Eine potenzielle Quelle ist die Abwärme von Abwasserreinigungsanlagen. Darüber hinaus können erneuerbare und lokal verfügbare Energiequellen wie Erdwärme, Holz, Grundwasser sowie See- und Flusswasser als Wärme- oder Kältequelle genutzt werden. Diese Energieträger müssen nicht importiert werden. Im Verbund können auch verschiedene Energiequellen kombiniert werden, was die Versorgungssicherheit erhöht.

    Verschiedene Verbundtypen
    Nah- und Fernwärmenetze können nach ihrer Grösse und Ausrichtung unterschieden werden. Nahwärmenetze versorgen äusserst effizient mehrere Gebäude, während Fernwärmenetze über grössere Entfernungen ganze Stadtteile oder Gemeinden versorgen. Technisch gesehen sind die Unterschiede zwischen Nah- und Fernwärme gering, da sie weitgehend identisch funktionieren.

    Umfassender Service
    Durch die Partnerschaft mit ewz haben Immobilieneigentümerschaften, in diesem Fall Ilanz, einen erfahrenen und zuverlässigen Energiedienstleister an ihrer Seite. Dieser übernimmt alle Aufgaben von der Planung und Finanzierung bis zur Umsetzung und dem Betrieb von Nah- oder Fernwärmenetzen. Dank langjähriger Erfahrung und einem Expertennetzwerk werden individuell passende Lösungen für Projekte in der gesamten Schweiz entwickelt.

  • Swiss Cobra reduces environmental impact of fireplaces

    Swiss Cobra reduces environmental impact of fireplaces

    Swiss Cobra wants to revolutionize fireplaces with a patented stainless steel stand. With its product called Cheminée Cobra, the woods can be positioned parallel to each other in a targeted manner. This allows the air-gas mixture to flow around the woods. The stand “not only makes lighting easier and beautifies the flame pattern, but also makes an impressive contribution to environmental protection,” as Christian Schmid, managing director of Swiss Cobra, explains in a statement.

    The contribution of Cheminée Cobra to environmental protection has now also been proven in a study supported by the Federal Office for the Environment(FOEN). According to the statement, the study attests to a reduction in pollutants of up to 40 percent. Schmid also explains the study results in detail. According to the study, Cheminée Cobra can reduce methane gas (OGC) by up to 64 percent, carbon monoxide (CO) by up to 38 percent and soot and particulate matter by 24 percent.

    The study, supported by the FOEN as part of its Environmental Technology Funding (UTF) program, was conducted by the accredited Swiss Testing Laboratory for Wood Combustion at the University of Applied Sciences Northwestern Switzerland in Windisch AG. The detailed results can be viewed online.

  • Ina Invest receives seal of approval for sustainability

    Ina Invest receives seal of approval for sustainability

    The real estate company Ina Invest has been named Sector Leader in the “Diversified” development portfolio class for the entire European region according to the GRESB (Global Real Estate Sustainability Benchmark) rating system, according to a media release. The rating is awarded once a year to real estate and infrastructure companies, funds and investments with special sustainability performance.

    CEO Marc Pointet, quoted in the press release, sees the quality mark as proof of the sustainability strategy. “GRESB Sector Leaders embody the industry’s pioneers on the path to net zero energy consumption.” The success, he says, is due to Ina Invest’s “strong partners”. Implenia, in particular, has contributed to new benchmarks in sustainability with its “integrated real estate and construction services”. Ina Invest is a spin-off of Implenia.

    According to the release, the GRESB ESG (Environmental, Social, Governance) benchmark has grown to a gross value of more than $8.8 trillion in the current financial year and includes 2084 real estate companies, 687 infrastructure assets and 172 infrastructure funds.

  • Pilot project measures potential of CO2 in recycled concrete

    Pilot project measures potential of CO2 in recycled concrete

    A pilot project led by the Swiss Federal Institute of Technology Zurich(ETH) in collaboration with experts from the Swiss Federal Laboratories for Materials Testing and Research (Empa), the ETH Domain’s Water Research Institute(Eawag), the Paul Scherrer Institute(PSI) and the companies Kästli Bau from Rubigen BE and neustark from Bern, as well as 18 other partners, has shown that concrete demolition granulate fumigated with CO2 can save around 15 per cent of the greenhouse gas produced during its manufacture.

    A total of 10 percent of this is achieved by the novel building materials enriched with carbonated concrete granulates. Another 5 to 7 percent can be achieved because the concrete granulate enriched with CO2 makes the cement compounds in recycled concrete stronger than normal concrete. This is the result of complex measurements carried out by Andreas Leemann of Empa’s Concrete & Asphalt Department, among others: “A reactive phase, in other words, which is newly formed in the granulate and produces a higher strength in the recycled concrete. That surprised us,” he is quoted as saying in a media release.

    Further potential was also shown by the CO2 treatment of the so-called recycling water from water, cement and sand, which is produced during the cleaning of concrete vehicles and mixing plants. One kilogram of it could bind the considerable amount of 120 grams of CO2 gas. Life cycle analyses have summed up that the carbonated material can reduce the greenhouse effect by about 13 per cent net compared to concrete with conventional cement and without recycled material. For concrete with recycled material, the effect is still 9 percent.

    The project leaders will present the research results to the public at the so-called closing event. It will take place on 6 December at ETH’s Audi Max.

  • Empa researches clay as a sustainable building material

    Empa researches clay as a sustainable building material

    Clay releases significantly less CO2 than concrete, explains the Swiss Federal Laboratories for Materials Testing and Research(Empa) in a press release. Ellina Bernard from Empa’s Concrete & Asphalt Laboratory in Dübendorf and the Chair of Sustainable Construction at the Swiss Federal Institute of Technology Zurich is working to establish clay as a sustainable alternative to concrete. Their project is supported by the Swiss National Science Foundation(SNSF) with an Ambizione grant.

    Clay is found in different geological compositions all over the world. The sustainable building material could replace concrete in non-load-bearing structures as well as in load-bearing walls of residential buildings. For large-scale use, Bernard and her team want to define standards for composition and mechanical strength. On the other hand, additives must be found that increase the load-bearing capacity of the material. Conventional cement is currently still used here, but this pushes the ecological footprint of clay “back into the red zone”, Empa writes.

    Bernard, in collaboration with geologist Raphael Kuhn, has found a promising approach in magnesium oxide. In initial laboratory experiments with clay formulations, a compressive strength of up to 15 megapascals was achieved, Empa informs. Clay with added cement achieves up to 20 megapascals.

  • Majority wants less traffic in the city

    Majority wants less traffic in the city

    The Swiss want their cities to become less congested, greener and more affordable over the next 30 years. This is the result of a representative survey conducted by the opinion research institute Sotomo on behalf of the express and parcel service provider DPD Switzerland in June this year. The survey is entitled ” Future image of a sustainable city“.

    According to the survey, six out of ten people would like to see more car-free zones in urban centres and almost as many (58 per cent) would like to see more trees in built-up areas and more segregated cycle paths. In return, they would accept fewer parking spaces and car lanes. 84 percent are in favour of better public transport. For connections between cities, 88 percent would like to see an expansion of the Europe-wide fast and night train network. 53 percent want motorways with more capacity.

    A clear discrepancy between young and older people can be seen in the topic of climate neutrality: while 22 to 24 percent of all age groups between 31 and over 60 consider the net zero target by 2050 to be realistic, only 12 percent of 18 to 30 year-olds believe this. At the same time, however, 87 percent of them consider this goal desirable. For all other age groups, the figure is only between 68 and 78 percent.

    A large majority is in favour of promoting affordable housing for the elderly (91 percent), including sympathisers of the FDP (88 percent) and the SVP (85 percent). 70 percent of the population want non-profit housing. Sixty-five per cent are in favour of taller buildings and 52 per cent are in favour of limiting the number of objections to building projects.

  • New school toilets to transform Sri Lanka’s construction industry

    New school toilets to transform Sri Lanka’s construction industry

    Paolo Tombesi, the director of the Laboratory of Construction and Architecture(FAR) at the Swiss Federal Institute of Technology Lausanne(EPFL), and visiting scientist Milinda Pathiraja have completed a groundbreaking construction project at its old high school in Kandy in central Sri Lanka: The construction of two toilet facilities is designed to demonstrate industrial development potential through architectural design. Their prototype is based on 20 years of joint research.

    With strategic planning, the design of such infrastructures “can be used as an opportunity to showcase and disseminate innovations and introduce practice-based triggers for a much-needed revitalisation of local building culture”, Pathiraja is quoted as saying in an EPFL report. It was also about “cultivating new, economically sustainable and ecologically oriented building ‘traditions’ for countries facing urbanisation pressures, limited raw materials and financial constraints”.

    For example, non-sustainable building materials that require functioning supply chains, such as glass and aluminium, or are not available in the country, such as clinker, were avoided. The two researchers also wanted to illustrate how building policy and sustainability lead to value creation at different points, for example in the case of vaulted roofs made of ferrocement.

    For all this, the industry needs concrete examples and prototypes “that show both the technical value and the economic feasibility of such ideas”, says Tombesi. These toilets simultaneously lower the total cost to $400 per square metre, including sanitation. “And given the nationwide need for this type of programme, the lessons we’ve learned will likely be picked up by others.”

  • Cantonal properties in Riehen win sustainability award

    Cantonal properties in Riehen win sustainability award

    The properties of the Canton of Basel-Stadt at Hirtenweg 16 to 28 in Riehen have won this year’s international prize for sustainable architecture, the cantonal finance department informs in a statement. Every year, the Faculty of Architecture of the University of Ferrara and the building materials company Fassa Bortolo award the prize to projects “that are geared to the needs of people and serve as role models in the careful use of natural resources”, it continues. In this year’s competition, the cantonal properties prevailed over numerous other projects from all over the world.

    The international jury was particularly impressed by two aspects of the properties in Riehen. One was the socially acceptable densification of living space. Of the five buildings already on the plot, the canton renovated three. The remaining two were demolished and replaced by three new buildings. This almost doubled the number of flats from 32 to 63.

    On the other hand, the resource-saving solid wood construction method was the decisive factor in the project realised by the project team Harry Gugger Studio AG, Erne AG Holzbau and Fontana Landschaftsarchitektur. The wooden modules were prefabricated in a production hall and then assembled on site within a very short time. During the entire construction work, the residents of the properties were able to stay on site. Residents of the deconstructed buildings moved into an already completed new building before their old house was demolished.

  • Waste incineration plant in Turgi to be renovated at a cost of 325 million Swiss francs

    Waste incineration plant in Turgi to be renovated at a cost of 325 million Swiss francs

    After 50 years of operation, the waste incineration plant in Turgi is to be renovated. According to a press release, the board of directors will propose a project credit of CHF 17 million at the next general meeting on 27 September. The total cost of the renovation is estimated at 325 million francs. According to the information, the necessity of a renewal is also reflected in increasing expenses for repairs and maintenance.

    After a planning phase lasting several years, construction is not expected to begin until 2028. The new MWIP could then go into operation in 2033. The last renovation work on the plant was carried out in the 1990s.

    In addition to the invitation to the general meeting, the MWIP has posteda collection of documents on its website, including the feasibility study for the projectand the detailed proposal by President Philippe Ramseier for the project planning loan.

    According to these documents, the management and board of the MWIP have been working on the renewal of the outdated facilities since 2015. Cooperation with the neighbouring plants in Buchs AG and Dietikon ZH was examined. However, both rejected this. After the feasibility study of 2022, the MWIP board decided to locate the new plants on a neighbouring parcel of land belonging to the Abwasserverband Region Baden Wett ingen. This means that operations can continue during the renovation work.

    The waste incineration plant in Turgi processes around 120,000 tonnes of waste per year. A moderate price increase is expected for the district heating generated from this waste because of the renovation costs.

  • Mobiliar invests in heat reduction in Bern neighbourhood

    Mobiliar invests in heat reduction in Bern neighbourhood

    Mobiliar is contributing CHF 450,000 to a climate adaptation and upgrading project in the Breitenrain district of Bern. According to climate measurements by the University of Bern, this neighbourhood is hotter than average. According to a statement by the insurance company, the municipal council has approved a loan of 1.3 million francs for a corresponding redesign of Optingenstrasse. “With Mobiliar’s financial contribution, we can do more on Optingenstrasse than if the city had to finance the project alone,” municipal councillor Marieke Kruit is quoted as saying.

    The plan is to plant 20 trees to combat heat accumulation and to unseal street and parking areas so that rainwater can seep away and cool the air through evaporation. To further enhance the neighbourhood, green or marl areas are to be created with bicycle stands or seating. The city is carrying out these climate adaptations as part of the renovation work of the energy supplier Energie Wasser Bern, which is planned for 2024 anyway.

    “Our approach to natural hazards is not limited to paying for damage – we are also increasingly involved in prevention,” Thomas Trachsler of Mobiliar is quoted as saying. Belinda Walther Weger, Head of Public Affairs & Sustainability at the insurance company, emphasises that sponge city projects go beyond mere hazard prevention: “They help to ensure that the quality of life in densely populated areas remains high.” For this reason, Mobiliar from the cooperative will participate in further sponge city projects in Swiss cities as part of its support for climate protection projects. “With our commitment, we want to make an important contribution to a sustainable and positive future.”

  • Venture Kick supports Borobotics with 150,000 Swiss francs

    Venture Kick supports Borobotics with 150,000 Swiss francs

    Borobotics from Winterthur has received 150,000 Swiss francs from Venture Kick for the further development of its innovative drilling robot after reaching the third stage of the programme. In response to the problem of the previously energy-intensive and expensive drilling of holes for geothermal probes, Borobotics is revolutionising geothermal heating processes with a drilling robot that can work in up to 90 per cent less space and at significantly lower cost, according to a media release.

    In addition to the high costs and large space requirements, previous methods bring disadvantages such as energy intensity, inaccuracy, noise pollution and landscape destruction, according to the release. Borobotics describes its development as “an earthworm-like robot that moves vertically into the earth” without a rig or drill pipe. It is intended to enable a much wider spread of geothermal heating.

    Borobotics emerged from a research project at the Zurich University of Applied Sciences, according to the release. The start-up wants to invest the 150,000 Swiss francs in several drilling tests of its robot in order to be able to present a functioning prototype at the geothermal energy trade fair GeoTHERM 2024 in Offenburg during demonstration drillings on 29 February and 1 March 2024.

  • Efficient asphalt recycling in Switzerland

    Efficient asphalt recycling in Switzerland

    In Switzerland, the growing amount of old asphalt in landfills is a problem that is now being addressed through innovative research. The “HighRAP” project, led by Martins Zaumanis and in collaboration with authorities and industry partners, aims to maximise the use of recycled asphalt in road construction.

    Challenges and solutions
    Waste asphalt is a challenging resource. Its binder, bitumen, ages and stiffens over time, making it difficult to use. In addition, old asphalt is often a mixture of different road layers and time periods, which affects its homogeneity. Zaumanis’ research project offers solutions here. Specialised testing methods and a newly developed computational model make it easier to reuse old asphalt.

    Practical tests and applications
    The project has already proven its practicality in two pilot projects. In Uster, it was possible to incorporate up to 50% recycled asphalt into the road surface without sacrificing performance. Even on the climatically challenging Lukmanier Pass, asphalt with high recycled content was successfully used. These results encourage the expanded use of recycled materials.

    Forward-looking research
    The project not only offers practical solutions for road construction, but also sheds new light on the possibilities of using recycled material efficiently and sustainably. Martins Zaumanis is confident that his research will help to significantly reduce the amount of used asphalt in landfills.

    With the “HighRAP” project, sustainable road construction in Switzerland is taking off. New methods, political will and successful practical tests make a future with less waste and more recycling in road construction seem realistic.

  • Steiner initiates construction of wooden building in Ostermundingen

    Steiner initiates construction of wooden building in Ostermundingen

    Steiner AG has started building 17 condominiums in Ostermundigen, near Bern. The marketing of the studios and the 2.5- and 4.5-room flats is already “in full swing”, writes the Zurich-based real estate developer in a post on LinkedIn. The NIDO project envisages a building in timber construction with flats accessed by an arcade.

    “Equipped with modern building technology such as a geothermal probe with heat pump and a photovoltaic system, this progressive wooden building will be a forward-looking home for people who are concerned about sustainable living,” Steiner says. According to the project description, the flats have balconies and terraces facing west. The flats on the ground floor each have a garden area. In addition, “meeting zones for all residents” are to be created in the outdoor space.

  • Implenia receives top rating for sustainability

    Implenia receives top rating for sustainability

    Opfikon-based construction and real estate company Implenia has received 86 points in its sustainability rating from US rating agency Morningstar Sustainalytics. This is one point more than last year. Implenia has thus consolidated its top position in the three areas of environmental, social and governance (ESG) within the construction and engineering sector, according to a media release.

    Accordingly, Implenia is also well ahead in Sustainalytics’ current ESG Risk Rating and is one of the Industry Top Rated companies in its sector. In addition to the management of ESG issues, industry-specific ESG risks were also looked at.

    “As one of five corporate values and part of our mission, sustainability is firmly anchored in Implenia’s culture, as demonstrated once again by the Sustainalytics rating,” Anita Eckardt, Chair of Implenia’s Sustainability Committee, is quoted as saying in the media release. The energy transition is a major demand driver in the construction and real estate industry. “We support our customers in planning and realising real estate and infrastructure sustainably and are constantly developing the options for doing so.”

    Sustainalytics is an Amsterdam-based company belonging to Morningstar Inc. in Chicago in the US state of Illinois and offers data and ratings on corporate responsibility for the environment, social issues and corporate governance.

  • 10 million Swiss francs in funding for concrete recycling technology

    10 million Swiss francs in funding for concrete recycling technology

    Almost 40% of global CO2 emissions are attributable to the construction and building sector. Around 30 billion tonnes of concrete are produced worldwide every year and demand continues to rise. The binding agent cement and the composite material concrete are important building materials – but their production contributes to climate change. Estimates suggest that the cement industry alone is responsible for more than 8% of global greenhouse gas emissions. With reCO2ver® Sika has developed an innovative technology that enables complete recycling of concrete demolition material and is unique in the concrete industry.

    17,000 tonnes of CO2 storage in concrete demolition material by the end of 2030

    Sikas not only processes old concrete into the high-quality individual components gravel, sand and cement stone, but can also bind additional CO2 thanks to a chemical process. Approximately 15 kilogrammes of CO2 can be permanently stored per tonne of demolition material. In addition, the performance of the cement paste powder produced in the process is optimised by Sika additives

    Additives and can thus be used again as a cement substitute in concrete production. A pilot plant has been in operation in Switzerland since October 2021 – the test phase has now been successfully completed.

    In order to be able to provide standardised proof of the plants’ added climate value, Sika is developing a climate protection programme together with South Pole in accordance with the specifications of the Swiss Federal Office for the Environment (BAFU). A significant milestone has now been reached with regard to the implementation and use of this technology for CO2 capture and storage: the Swiss Climate Cent Foundation guarantees the purchase of CO2 certificates from this programme of initially CHF 10 million until the end of 2030.

    The implementation of the industrial plants is a central component of the certified climate protection programme. By the end of 2030, around 17,000 tonnes of CO2 are to be stored in concrete demolition material. This is roughly equivalent to the amount of CO2 released during the construction of 850 single-family houses made of concrete. Philippe Jost, Head Construction Sika: “With our innovative strength and our sustainable technologies, we enable our customers in the construction and automotive industries to reduce their ecological footprint and make the transition to more sustainability. We are very pleased that the reCO2ver® technology is being specifically promoted. We are convinced that through the programme we are creating great added value for the construction industry, the environment and for future generations.”

  • “Green” asphalt: a milestone towards climate-friendly road construction

    “Green” asphalt: a milestone towards climate-friendly road construction

    By 2037, Basel-Stadt aims to reduce its greenhouse gas emissions on cantonal territory to net zero. Conventional asphalt used in road construction produces greenhouse gases. The canton plans to carry out road renovations in a targeted manner and to use asphalt sparingly, in a degradable and sorted manner. In future, “green” asphalt with vegetable carbon will be used for renovations in order to reduce the CO2 footprint of road construction.

    IWB in Basel produces certified vegetable carbon from green waste in a plant under oxygen exclusion. The heat released is used for the district heating network. The remaining plant carbon contains the carbon component of the CO2 extracted during plant growth. This removes CO2 from the atmosphere in the long term. The Basel-Stadt Civil Engineering Office and the Institute for Construction Materials Technology ViaTec Basel AG have developed and tested asphalt mixtures with plant carbon. Vegetable carbon asphalt meets Swiss standards, is of high quality and durable. The costs are slightly higher than for conventional asphalt.

    Since 2022, the plant charcoal asphalt has been tested on a recycled construction material transfer site. Positive results show that one tonne of the mixture permanently binds 50 kilograms of CO2. The CO2 sequestration exceeds the release during production, transport and paving. The pavement is “CO2-negative”. The area-wide use of this technology is planned.

    The Basel-Stadt civil engineering office is working with regional pavement mixing plants to simplify the production of the mix. The civil engineering offices of Basel-Landschaft and Basel-Stadt are exchanging experiences. The Construction and Transport Department of Basel-City is planning to use vegetable charcoal asphalt throughout the country for road rehabilitation. This could save around 1,250 tonnes of CO2 equivalent annually and exceed the amount of CO2 produced by road construction by 450 tonnes.

  • Empa entwickelt recycelbaren Kunststoff für die Industrie

    Empa entwickelt recycelbaren Kunststoff für die Industrie

    Forschende der Eidgenössischen Materialprüfungs- und Forschungsanstalt (Empa) haben eine neue Art von Kunststoff entwickelt. Ihr Epoxidharz lässt sich sowohl reparieren als auch wiederverwerten. Das ist einer Medienmitteilung zufolge ein Novum. Bisher war die Wiederverwertung bei Epoxidharzen nicht möglich. Bei dieser Art von Kunststoffen sind die Polymerketten engmaschig miteinander vernetzt, was das Schmelzen verunmöglicht. „Haben sie einmal ausgedient, werden sie verbrannt oder in Deponien entsorgt”, erklärt Wenyu Wu Klingler vom Empa-Labor Advanced Fibers in St.Gallen.

    Epoxidharze haben allerdings ausgezeichnete mechanische und thermische Eigenschaften, wie die Empa in ihrer Mitteilung schreibt. Entsprechend werden sie vielseitig in der Industrie eingesetzt – etwa bei der Herstellung von Bauteilen für Flugzeuge, Autos, Züge, Schiffe und Windkraftanlagen.

    Mit dem besonderen Epoxidharz der Empa soll also unter anderem der Einsatz von faserverstärkten Kunststoffen in der Industrie nachhaltiger werden. „Die Herstellung von Kohlenstofffasern benötigt sehr viel Energie und setzt enorm viel CO2 frei”, erklärt Sabyasachi Gaan vom Empa-Labor Advanced Fibers. Wenn sie nach ihrer Nutzung in den Stoffkreislauf zurückgebracht werden können, könne der ökologische Fussabdruck verbessert und auch der Preis gesenkt werden, so Gaan.

    Faserverstärkte Kunststoffe, wie sie im Bau von Flugzeugen, Zügen, Booten, Autos und Velos eingesetzt werden, sind laut der Empa aber nicht die einzige Anwendung für den neuen Kunststoff. Er könnte beispielsweise zur Beschichtung von Holzböden eingesetzt werden –  als eine transparente, widerstandsfähige Schicht, die gute flammhemmende Eigenschaften aufweist.

  • Dietikon expands information offer on its city app

    Dietikon expands information offer on its city app

    The range of information and services in the Dietikon city app has been expanded, according to a press release from the city of Dietikon. The population now has access to numerous local real-time data in the areas of traffic, temperature, air quality or noise. Interested parties can also set up personalised notifications in the app, it continues.

    As part of the Smart City Dietikon, data in the areas of traffic, temperature or air quality are collected via sensors at various locations in the city. Until now, this data has primarily been collected internally, according to the statement. Now this data is also available to the general population and the economy in the app.

    The modified city app is a newly developed module that was created in close cooperation with the app provider Anthrazit and the Electricity Works of the City of Zurich(EKZ). Dietikon is the first city to use the module, according to the statement.

    “I see the presentation of this data as a great benefit for the population,” Jörg Haller, the head of Smart City and Public Lighting at EKZ, who drove the project together with the city of Dietikon, is quoted as saying.

    “The city council has set itself the goal of actively driving forward the digital transformation. An internal process is currently underway to further develop the smart city strategy, and other projects are being implemented in parallel,” city president Roger Bachmann is quoted as saying. As an example, he mentions street cleaning with the support of artificial intelligence. The Smart City Dietikon won the main prize at the Smart City Innovation Challenge of the Swiss Federal Office of Energy(SFOE) 2020.

  • New plastic protects against flames

    New plastic protects against flames

    Epoxy resins are resistant and versatile plastics. In combination with glass or carbon fibres, they are used, for example, to manufacture components for aircraft, cars, trains, ships and wind turbines. Such fibre-reinforced epoxy-based plastics have excellent mechanical and thermal properties and are much lighter than metal. Their weakness: they are not recyclable – at least not yet.

    Now Empa researchers led by Sabyasachi Gaan from Empa’s Advanced Fibers Laboratory have developed an epoxy resin-based plastic that is fully recyclable, repairable and also flame retardant – while retaining the favourable thermomechanical properties of epoxy resins. They have published their results in the Chemical Engineering Journal.

    Recycling epoxy resins is anything but trivial, because these plastics belong to the so-called duromers. In this type of plastic, the polymer chains are closely cross-linked. These chemical bonds make melting impossible. Once the plastic has hardened, it can no longer be deformed.

    The situation is different with thermoplastics, such as PET or polyolefins. Their polymer chains are close together but not bonded. Under the influence of heat, these plastics can be melted and formed into new shapes. The only problem is that due to the lack of cross-linking, their mechanical properties at elevated temperatures are generally not as advantageous as those of duromers.

    A new type of plastic
    The special epoxy resin that Empa researchers have developed in collaboration with national and international partners is actually a duromer – but unlike other duromers, it can certainly be melted like a thermoplastic. The key is the addition of a special functional molecule from the class of phosphonic acid esters to the resin matrix. “We originally synthesised this molecule as a flame retardant,” says Empa scientist Wenyu Wu Klingler, who co-invented the technology. However, the bond that the molecule forms with the polymer chains of the epoxy resin is reversible, i.e. it can be dissolved again under certain conditions. This loosens the cross-linking of the polymer chains so that they can be melted and shaped.

    Such materials, also called vitrimers, have only been known for about ten years and are considered particularly promising. “Today, fibre-reinforced plastics are practically impossible to recycle, except under extreme conditions that damage the fibres,” explains Wu Klingler. “Once they have had their day, they are incinerated or disposed of in landfills. With our plastic, it would be possible for the first time to put them back into the material cycle.”


    Their vision for the future, adds group leader Sabyasachi Gaan, is “a composite material in which the fibres and the plastic matrix can be completely separated and reused.” The researcher sees a particular advantage in carbon fibre-reinforced plastics, for example, as used in the construction of planes, trains, boats, cars, bicycles and more. “The production of carbon fibres requires a lot of energy and releases an enormous amount of CO2,” he explains. “If we could recycle them, their ecological footprint would be a lot better – and the price a lot lower.” In addition, valuable additives such as phosphorus could be recovered from the polymer matrix.

    Tailor-made material
    Fibre-reinforced plastics are not the only application for the new plastic. For example, it could be used to coat wooden floors, as a transparent, resistant layer that has good flame-retardant properties – and where scratches and damage can be “healed” again with a little pressure and heat.

    “We didn’t develop a single material for a specific purpose, but rather a toolbox,” Gaan explains. “The flame retardancy, recyclability and repairability are all there. We can optimise all other properties depending on the intended use.” For example, he says, flow properties are particularly important for the production of fibre-reinforced plastics, while exterior wood coatings must also be weather-resistant.

    To pursue these and other applications of the material, the researchers are now looking for industrial partners. The chances of commercial success are good: because in addition to all its other advantageous properties, the modified synthetic resin is also cheap and easy to manufacture.

  • How do you develop climate-neutral real estate?

    How do you develop climate-neutral real estate?

    The Implenia Real Estate Division has examined 36 of its own development projects in Switzerland to get to the bottom of the question of how climate-neutral buildings can be realised. From this study, the most important levers for decarbonising buildings over their entire life cycle can be derived, in terms of emissions during construction as well as during operation. These influencing factors have been incorporated into a white paper.

    The real estate sector is responsible for around 36% of primary energy consumption and 37% of greenhouse gas emissions. In order to achieve the 1.5 degree target by 2050 set in the Paris Agreement and to reduce global greenhouse gas emissions, decarbonisation must become equally central to the development and construction of real estate.

    The analysis of real estate development projects has shown that the most effective levers for decarbonisation can be found in the early planning phase, starting with site selection. If the site conditions are unfavourable from a renewable energy perspective, it is much more difficult to achieve net-zero use. Building parameters established early on, such as shape, compactness, orientation, basement and support structure, also have a significant impact on emissions targets.

    “With the right combination of location, design, the use of renewable energies, intelligent systems and ecological materials, we develop buildings in which future generations can live and work sustainably,” says Marc Lyon, Head Real Estate Development Switzerland at Implenia.

    Further information at implenia.com/net-zero/

  • Urbane Dörfer lädt zur Eröffnung nach Melchenbühl ein  

    Urbane Dörfer lädt zur Eröffnung nach Melchenbühl ein  

    Die Genossenschaft Urbane Dörfer mit Sitz in Bern lädt am Samstag, 26. August, ab 17 Uhr zur Eröffnungsfeier des Projekts Melchenbühl nach Muri-Gümligen ein. Dort, direkt bei der Tramhaltestelle Melchenbühl in Gümligen, eröffnet die Genossenschaft einen vielfältigen Begegnungsort. Es ist das zweite Pilotprojekt von Urbane Dörfer neben dem Urbanen Dorf Webergut in Zollikofen BE. Laut einem zu diesem Anlass herausgegebenen Flyer mit Einladung wird am 26. August zunächst ein Kreativort mit Kaffee und Bar, Coworking und Atelier eröffnet. Langfristig sollen 60 Wohneinheiten entstehen.

    Am 1. März 2023 hat Urbane Dörfer das Areal übernommen. Die ungenutzte Wiesenfläche, ein zweistöckiges Werkstatt- und Bürogebäude mit Innenhof und ein Zeithorizont von zwei bis drei Jahren schaffen Raum für Ideen aus der Bevölkerung, das Testen von zukünftigen Nutzungen des Urbanen Dorfes und für einen Begegnungsort, heisst es auf der Internetseite zum Projekt.

    Am neuen Kreativort wird es Benela’s Kaffee und Bar im Erdgeschoss geben. Im Obergeschoss sollen Atelier und Coworking Space einen schöpferischen Nährboden für Kreativschaffende und Selbstständige schaffen. Die Kreativwerkstatt diene als Workshop-Raum für kreative Projekte.

    Zur Zukunft des Pilotprojekts heisst es, langfristig entstehe auf dem Areal ein vielfältiger Wohn-, Arbeits- und Kreativort und eine Basis für gelebte Nachbarschaft. Geplant sind 60 Wohneinheiten, gemeinschaftlich genutzte Flächen und öffentliche Gewerbeflächen. Das partizipative Wohnprojekt sei „eine Keimzelle für ein nachhaltiges urbanes Leben“.

    Dann folgt noch der Hinweis, dass der Anlass bei jedem Wetter stattfinde und eine Anmeldung nicht erforderlich sei.

  • ZHAW wins bid for SWEET funding programme

    ZHAW wins bid for SWEET funding programme

    The tender on the topic of “Sustainable Fuels and Platform Chemicals” of the SWEET funding programme has been decided: The ZHAW, as part of the ReFuel.ch consortium, has been awarded the contract. The main objective of reFuel.ch (Renewable Fuels and Chemicals for Switzerland) is to improve sustainability and reduce the cost of sustainable fuels and platform chemicals by increasing the efficiency, selectivity and load flexibility of production plants in line with long-term climate policy goals.

    The consortium will explore how closing the knowledge gaps on technical and non-technical aspects of sustainable fuels can increase investment certainty. Robust and practical pathways for the introduction of sustainable fuels and platform chemicals into the different markets and into the Swiss energy system will be developed. To this end, contributions from the social, natural and engineering sciences as well as findings from the dialogue with relevant stakeholders will be taken into account. Another goal is to strengthen innovative technologies that currently have a low level of technological maturity. The Centre for Aviation Engineering at the ZHAW School of Engineering will specifically address aviation fuel logistics in order to enable the lowest possible emission transport of operating materials from their production site to the aircraft. Estimates will also be made of the climate impact of alternative aviation fuels at high altitudes. The Center for Energy and the Environment at the ZHAW School of Management and Law, in addition to co-leading the consortium, will specifically investigate the framework conditions that would be necessary for investments along the identified sustainable pathways. This includes an assessment of distribution effects as well as framework conditions for the most efficient integration of new plants into the Swiss electricity market. The call for proposals “Sustainable Fuels and Platform Chemicals” was developed in cooperation with the Federal Office of Civil Aviation (FOCA) and the Federal Office of Armament (armasuisse). The reFuel.ch consortium was selected in a two-stage procedure. The funding is 15 million Swiss francs.

  • Modular wooden fixtures for interim uses

    Modular wooden fixtures for interim uses

    The whir of a cordless screwdriver rings through the DISPO in Nidau. In the old factory hall, which offers space for creative, cultural and business people, four prototypes of space modules are being built that day, thanks to which it should be possible in future to implement interim uses of vacant buildings and wastelands simply and sustainably. The aim is to add ecological, economic and social value to unused spaces. This is the goal of researchers from the Institute of Timber Construction, Structures and Architecture IHTA at the Bern University of Applied Sciences BFH, together with partners from industry, in the Innosuisse research project “àDisposition”.

    Various modular solutions tested
    In the project, the researchers are developing a modular construction kit for room modules and interior fittings. A central component is a configurator, thanks to which project ideas can be easily tested, presented and implemented in a time- and resource-saving manner. Based on digital designs, the BFH researchers are now creating prototypes at Dispo in Nidau in collaboration with the project partners. Using these, they are investigating and improving various module solutions. The project team is testing different systems, connecting elements and segment shapes and, after a short time, is already able to identify the most promising strategies for a lightweight, reusable and easily reconfigurable modular system.

    Time for assembly varies depending on the degree of fabrication
    The requirements for modular fixtures are high: assembly and disassembly should be possible for non-professionals and the components should be light enough that only two people are needed for assembly. The fixtures should also be adaptable, easy to rearrange and easy to transport and store. During the assembly of the prototypes, it already becomes apparent how important it is to select the ideal degree of prefabrication. If the frames of the modules are delivered already screwed together, the fixtures can be set up in a very short time. Transport and storage, however, turned out to be more difficult. Conversely, assembly took significantly longer if the components were delivered individually and thus compact.

    Importance of digital continuity
    Another aspect that the researchers are testing with the production and assembly of the prototypes is the digital chain “design to production”. The modules are designed in the configurator, and the data for production is then automatically exported to CadWork. These files formed the basis for material orders and the production process. Here, the importance of digital continuity for a fast and simple production process became apparent.

    In a next step, the researchers are looking at the equipment of the modules. For example, the walls are another design element and additional (insulating) layers must meet the requirements for sound and heat insulation. These requirements differ greatly depending on the use.

    “àDisposition – Spaceship Planet Earth. Sustainable and temporary use of buildings and vacant sites through simple and modular structural measures” is a research project funded by Innosuoisse that runs until June 2025. Project partners are C2 Beat Cattaruzza GmbH, Beer Holzbau AG, Pius Schuler AG, Prona AG and Bauart Architekten und Planer AG.

  • Energy Cluster invites to one-day course on photovoltaic façades

    Energy Cluster invites to one-day course on photovoltaic façades

    The Energy Cluster network based in Bern invites interested parties to a day course on photovoltaic facades (PV facades) at the Lucerne University of Applied Sciences and Arts(HSLU) on 12 September. From 8.30 a.m. to 5 p.m., speakers will shed light on various aspects of house facades for the production of solar energy, according to a media release.

    Accordingly, David Stickelberger, Head of Market and Policy at Swissolar, will discuss the political framework conditions for PV façades from 9 a.m. onwards. From 9.30 a.m., Christoph Wangler, Product Owner PV Systems at 3S Swiss Solar Solutions, will address the question of how sustainable solar modules are.

    From 10.40 a.m., Roger Buser, lecturer in building technology and energy at the HSLU, will discuss the process steps from a rough estimate to the construction project. Pierre-Olivier Cuche, Managing Director at Solarwall, will then talk about the architecture and design of PV façades. From 11.40 a.m. Andreas Haller, Head of Innovation Solar Systems at Ernst Schweizer AG, will talk about implementation planning and installation.

    After the lunch break, the talk will continue with the topic of fire protection in a presentation by Christian Renken, Managing Director of CREnergie GmbH. From 2 p.m. Renken will be devoting himself to the topic of performance and economic efficiency.

    He will be followed by Stefan Gränicher, Project Manager Real Estate Development at Frutiger AG, with his impulse on profitability from the perspective of a real estate developer. Robin Bergamin, Consulting & Sales at Invisia AG, will then talk about energy management and the best possible use of electricity.

    The last lecture of the day is by Sina Büttner, research associate at the Institute for Building Technology and Energy at the Lucerne University of Applied Sciences and Arts, on optimal façade design with solar systems and greening in view of climate change.