immo!nvest – Die Plattform für Standorte und Immobilien

Category: Energy

  • Location opportunities for Switzerland in the face of global change

    Location opportunities for Switzerland in the face of global change

    The global economy is at the beginning of a profound transformation. Artificial intelligence has the potential to stimulate growth on a historic scale by 2035. Globally, up to 15 per cent additional GDP growth could be achieved, in Western Europe up to 13.8 %. However, for this boost to become a reality, transparent, ethically supported framework conditions are needed to create trust in the technology. Companies and countries are called upon to actively help shape the social and regulatory framework.

    The pressure to transform is increasing
    Switzerland is well positioned to play a key role internationally. 84% of CEOs in Switzerland introduced AI technologies in their companies last year, a sharp increase on the previous year. At the same time, the study shows that USD 7.1 trillion in value creation will be redistributed worldwide in 2025 alone. For companies in Switzerland, now is the time to rethink business models, utilise potential and strategically develop innovation-friendly locations.

    Growth areas along basic human needs
    Growth in the future will no longer take place along traditional industry boundaries. Instead, new ecosystems will emerge, for example in the areas of mobility, housing, food, energy and communication. In these networks, technology providers, utilities and industrial companies are working together on integrated solutions. Investing in this cross-sector cooperation at an early stage can open up new value chains and secure locational advantages.

    Climate change as a counterforce
    The positive potential of AI is offset by the burden of climate change. By 2035, there is a threat of a global decline in GDP of up to 7 %. At the same time, energy requirements will increase due to data-intensive AI applications. Targeted increases in efficiency, for example in buildings or production processes, can reduce CO₂ emissions and conserve resources. The challenge lies in taking a systemic approach to climate protection and digitalisation.

    Linking technological innovation and sustainable development will determine the attractiveness of tomorrow’s business locations. Those who invest in trustworthy AI applications, form cross-sector alliances and at the same time assume ecological responsibility will position themselves in the competition for future markets. Switzerland has the potential to become a globally relevant centre of innovation if politics, business and society actively and jointly shape change.

  • Photovoltaic system wins sustainability award

    Photovoltaic system wins sustainability award

    Solnow AG has received one of the three sustainability prizes awarded annually by the Beverin Nature Park, Viamala Tourism and the Viamala Region at this year’s MUMA, Viamala Tourism announced in a press release. Specifically, the young company from Zillis-Reischen was honoured with the prize in the Innovation category for its photovoltaic in-roof system at the exhibition of tradespeople from the Graubünden districts of Avers, Rheinwald and Schams. The prize for tourism and the audience award went to the Bachhuus project from Hinterrhein GR and the Val Schons pump track project in Andeer respectively.

    “Bricks off, Solnow on” is how Solnow AG describes its business model. The fully recyclable photovoltaic in-roof system is installed instead of tiles or other roof cladding and can also be operated in alpine conditions. It therefore makes an important contribution to a sustainable and regional energy supply, writes Viamala Tourism in the press release.

  • Large-scale decarbonisation through district heating expansion in Zurich

    Large-scale decarbonisation through district heating expansion in Zurich

    The city of Zurich wants to reduce CO2 emissions to net zero by 2040. In order to achieve this goal, thermal networks and a district heating network are to be significantly expanded. According to a press release, the city council is proposing a new framework credit of CHF 2.26 billion to voters. This credit includes the funds from the credits of CHF 330 million and CHF 573 million already approved in 2021 and 2022.

    The new loaned funds are intended to take into account both the increased financial requirements for the expansion of thermal grids and their degree of greening. Currently, 70 per cent of the energy generated by existing networks is fossil-free; the target is 100 per cent.

    “We want to double the proportion of the city supplied with district heating to around 60 per cent of the residential area by 2040. This is a generational project and requires a major expansion of the infrastructure. This will require major investments,” said City Councillor Michael Baumer, Head of the Department of Industrial Operations, in the press release.

    The entire project to reorganise the city’s heating supply, including the consolidation of all thermal networks in the city, is to be carried out under the umbrella of Elektrizitätswerk der Stadt Zürich(ewz).

  • Researcher investigates solar reflection for better yields

    Researcher investigates solar reflection for better yields

    SLF researcher Anja Mödl investigates how snow-covered terrain reflects sunlight. Her findings should make photovoltaic systems more efficient. The measurements take place in Meierhoftälli near Davos at around 2,400 meters above sea level.

    The researcher uses sensors to examine the sunlight reflected by the snow cover. According to the press release, the majority of sunlight is reflected by the snow in the direction of incidence. Sunlight is thus largely reflected in the direction of other mountain slopes.

    The snow surface reflects different wavelengths to different degrees. The intensity of certain wavelengths thus becomes stronger over time than in the originally incident light. Mödl is investigating how spectra differ at different locations.

    The measurements should enable photovoltaic systems to generate electricity even more effectively. Optimally positioned systems should then also be able to use the light reflected from neighboring slopes.

    The sensors measure wavelengths between 340 and 2500 nanometers. Photovoltaics only use the range between 500 and 1100 nanometers. According to Mödl, the larger spectrum makes it possible to gain further insights into rock warming and snow melting.

    Measurements are also planned for the coming season. “In order to make a well-founded statement, I need to record data under different conditions,” says the researcher.

  • Study shows potential for renewable energy in Frauenfeld

    Study shows potential for renewable energy in Frauenfeld

    The municipal utility company of Frauenfeld, Thurplus, and researchers from the Swiss Federal Laboratories for Materials Science and Technology (Empa) have presented the results of a two-year study entitled “Energy Perspectives 2050”. As detailed in a press release, the study developed scenarios that show which technologies, energy requirements and infrastructures could be used to achieve net-zero emissions in the specified period.

    According to the study, 80 percent of buildings in Frauenfeld are still heated with oil or natural gas. However, decarbonization could be achieved with the technologies already available today, such as district heating, heat pumps, photovoltaics and battery storage. However, to replace the existing fossil heating systems by 2040, 250 buildings a year would have to be equipped with renewable heating technologies. District heating plays a central role here, but solar systems also have great potential. Solar energy, which currently covers 18 percent of Frauenfeld’s electricity requirements, could be increased almost fivefold by 2040, according to the press release.

    The study was carried out in collaboration with Urban Sympheny AG, a spin-off of Empa. The project was supported by the Swiss Federal Office of Energy (SFOE), the Office for Energy of the Canton of Thurgau and the Office for Building Construction and Urban Planning of the City of Frauenfeld.

  • Ground-breaking ceremony for large-scale solar project

    Ground-breaking ceremony for large-scale solar project

    The Baden-based energy service provider Axpo is building a solar power plant above Tujetsch, in the immediate vicinity of the Lai da Nalps reservoir. According to a press release, it will generate 11 gigawatt hours of solar power with an output of 8 megawatts per year from 2028.

    At least 10 per cent of this should be connected to the grid by the end of 2025 in order to meet the requirements of the Solar Express. Further construction stages will be completed during the summer months of the following years, and the plant should reach its full production capacity in 2028. SBB will purchase the solar power for the railway power supply over a period of 20 years. This could cover the annual electricity needs of 2,000 households.

    At the ground-breaking ceremony, the importance of the solar project for the energy transition was emphasised. “Energy production in winter is key for Switzerland – alpine solar plants like NalpSolar make an important contribution when demand is at its highest,” Antoine Millioud, Head of the Solar Division at Axpo, was quoted as saying. Axpo also expects NalpSolar to provide important insights into the technology and realisation of large-scale solar projects in challenging alpine locations.

    Martin Cavegn, Mayor of Tujetsch, emphasised the potential of the plant for a sustainable energy future and value creation in the region. The location right next to the Nalps reservoir combines existing infrastructure with new climate-friendly technology. This brings advantages for local value creation and makes Switzerland’s electricity supply more secure.

  • How efficiently do heat pumps work

    How efficiently do heat pumps work

    Heat pumps are considered a key technology for the energy transition in the building sector. But how efficiently do they work in everyday life? Researchers at ETH Zurich have analyzed 1023 systems in ten European countries over a period of two years as part of the largest field study to date. The results show that actual efficiency varies greatly, with a number of dramatic deviations from the technical standards.

    Misconfiguration and oversizing
    Many heat pumps are incorrectly set up or oversized. The heating curve is often set too high, night setbacks lead to unnecessary additional heating and high heating limits extend running times. In Switzerland, 41% of the systems tested were found to have an excessive temperature range. 17 % of the air source heat pumps in the international study were even below the applicable efficiency standards.

    Digital tools as a solution
    The researchers are calling for uniform European standards for the digital monitoring of heat pumps. Intelligent control systems and algorithms could continuously analyse operating efficiency and provide suggestions for optimization. Initial pilot projects with smart meters and AI-supported data evaluation in Switzerland confirm this potential.

    Efficiency increases acceptance
    Efficient operation not only reduces electricity consumption, but also increases confidence in the technology. This is crucial for establishing heat pumps as a climate-friendly solution across the board. The ETH studies show that the technology is ready; what is needed now are standards, monitoring and greater awareness of its operation.

  • Swissgrid invests in the grid of the future

    Swissgrid invests in the grid of the future

    The transmission grid is the basis for a secure electricity supply in Switzerland and its importance is growing. Decarbonization, decentralization and digitalization are fundamentally changing the energy system. Swissgrid is responding to these developments with the “Strategic Grid 2040” project and has identified 31 key projects that need to be implemented by 2040. Around CHF 5.5 billion is to be invested in the expansion, modernization and controllability of the grid.

    Growing demands on the grid
    The transformation of the energy supply is leading to new burdens. Electricity consumption is rising sharply due to heat pumps, electromobility and data centers. At the same time, feed-in from volatile, decentralized sources is increasing. International electricity flows are increasing due to wind farms and solar farms in Europe. To meet these challenges, Swissgrid is focusing on targeted grid reinforcements, new phase-shifting transformers to control electricity flows and the comprehensive renovation of existing infrastructure.

    Planning with foresight and consideration
    The NOVA principle (grid optimization before grid reinforcement before grid expansion) is at the heart of the strategy. The grid is only expanded when all other options have been exhausted. This minimizes costs and environmental impact. At the same time, coordinated planning with cantons and partners and early involvement of the public will increase acceptance and speed up the planning process.

    Networking beyond national borders
    Swissgrid is not only planning for Switzerland, but also for the European energy future. A closer connection to the European grid and integration into a future supergrid should help to transport electricity more efficiently across continents. A regulated electricity agreement with the EU remains crucial for this integration.

  • Strengthening the Swiss electricity grid with copper and brains

    Strengthening the Swiss electricity grid with copper and brains

    By enshrining the net-zero target by 2050 in law, Switzerland has set an important course for a climate-neutral energy supply. The expansion of renewable energies such as photovoltaics, hydropower and wind power is progressing. However, the existing grid infrastructure is not optimally designed for this. The integration of fluctuating feed-ins requires a flexible electricity grid that avoids bottlenecks and ensures a stable supply.

    Grid expansion is the biggest challenge
    Switzerland has a strong transmission grid, which is of great importance for international electricity trading. Nevertheless, two thirds of the 6700 kilometers of lines are between 50 and 80 years old and need to be modernized. There is an even greater need for action at the lower grid levels. Local distribution grids are increasingly challenged as decentralized power generators such as rooftop solar systems or electric vehicles put a strain on the low-voltage grid. The capacities of these grids need to be expanded and better controlled.

    Copper and intelligence solution
    Two approaches are crucial for a future-proof grid infrastructure.
    Classic grid expansion:
    The physical expansion of the electricity grid through new lines, reinforced cabling and more powerful transformers. This is expensive, but in many cases unavoidable.
    Intelligent control systems:
    Digitalization and smart technologies can be used to efficiently regulate electricity flows. This includes, for example, flexible feed-in systems for photovoltaics, grid-friendly home batteries and optimized load management for electric cars and heat pumps. Such concepts reduce expensive grid upgrades and make the system more agile.

    Flexibility as a success factor
    A highly flexible grid can cushion power fluctuations and balance demand peaks. This can be achieved through close networking with neighboring countries, the use of storage systems such as pumped storage power plants and intelligent control mechanisms. Researchers at ETH Zurich are also investigating how electromobility can contribute to grid stability, for example through controlled charging at times of high power availability.

    Both are necessary
    Neither traditional grid expansion nor intelligent control systems alone are enough to make the Swiss electricity grid fit for the energy transition. A combination of both is needed – copper for the physical infrastructure and brains for innovative control concepts. Investments in both areas are essential in order to meet the increasing demands of renewable energies efficiently and economically.

  • District heating reaches castle on the rock

    District heating reaches castle on the rock

    BRUGG Pipes, based in Kleindöttingen, connected Vaduz Castle in Liechtenstein to a district heating network via its flexible pipe system in spring 2025. According to a press release, the logistical challenge was overcoming the steep slopes from the base station to the castle.

    When laying the 300-metre-long pipeline, a height difference of 120 meters had to be overcome to reach the castle, which is located on a rocky terrace. The installation was carried out using helicopters. The FLEXWELL-FHK pipes used were fixed to holding points previously anchored to the rock. “This innovative method made it possible to overcome the challenges of the terrain safely, quickly and efficiently,” said Daniel Schneider, Sales Manager District Heating Switzerland at BRUGG Pipes, in the press release.

    The castle grounds and the adjacent buildings will be supplied with district heating from VfA Buchs in future. The district heating will be supplied by the waste incineration plant of the Verein für Abfallentsorgung (VfA) in Buchs SG. in 2023, around 200,000 megawatt hours of district heating energy were generated and supplied here, which corresponds to the amount of energy from burning 12.5 million liters of heating oil, according to the press release.

  • Takeover strengthens charging infrastructure in the e-mobility market

    Takeover strengthens charging infrastructure in the e-mobility market

    AVIA VOLT Suisse AG acquires the charging infrastructure provider Plug’N Roll and expands its charging infrastructure by 2345 charging points. Plug’N Roll customers benefit from access to a Europe-wide network of over 850,000 charging points. Graubünden-based Repower AG, the previous owner of Plug’N Roll, is realigning its focus with Repower E-Mobility.

    According to a press release, AVIA VOLT is now reviewing Plug’N Roll’s contracts and business processes. Its 24,600 customers will be seamlessly integrated into the AVIA network. The takeover will enable integrated billing of electrical and fossil energy for Plug’N Roll fleet operators. According to the press release, AVIA VOLT’s system architecture offers compatibility with the software and hardware solutions of many manufacturers.

    AVIA VOLT, based in Frauenfeld, is a subsidiary of several Swiss AVIA companies. It sees the takeover as an important step towards establishing itself as a leading service provider in the field of electromobility. “For us, the takeover means a targeted strengthening of our position as a provider of reliable charging infrastructure in Switzerland,” said Martin Osterwalder, Chairman of the Board of Directors of AVIA VOLT.

    Plug’N Roll is the e-mobility division of Repower AG. The e-mobility provider has been developing charging infrastructure in public spaces, for company fleets and for real estate since 2012. The Plug’N Roll brand will be used by AVIA VOLT until the end of 2025. Three Plug’N Roll employees will be taken on by AVIA VOLT.

  • Zurich Airport tests solar fences

    Zurich Airport tests solar fences

    Flughafen Zürich AG in Kloten wants to come closer to its net-zero target for company emissions by 2040 with a significant expansion of renewable energies. According to a press release, photovoltaic systems are to be significantly expanded. In addition to systems on roofs and facades, the airport is now testing the installation of solar fences. The first system has been installed next to the airport’s heating center.

    The vertically mounted panels offer several advantages. As they can be exposed to solar radiation on both sides, the electricity yield is increased by 10 to 30 percent. This means that electricity production can be extended throughout the day. At the same time, the solar panels serve as a security fence for the airport area.

    “As a first step, we want to gather experience with the vertical solar systems and check whether this technology could be considered for other locations. Parking lots, for example, are conceivable. The test phase will last at least a year in order to be able to map the seasonal effects,” Guido Hüni, Head of Energy and Decarbonization at Flughafen Zürich AG, is quoted as saying in the press release.

    Photovoltaic systems are currently installed on twelve building roofs. Further locations are being examined in a feasibility study. Among other things, glare safety for pilots and the tower must be guaranteed. By 2040, the airport’s photovoltaic systems should produce enough electricity to supply 5,000 households.

  • Lucerne wants to use transport infrastructure as solar power plants

    Lucerne wants to use transport infrastructure as solar power plants

    The canton of Lucerne wants to use more solar energy to generate renewable electricity and heat and utilise additional areas of the canton’s own road infrastructure as solar power plants. The canton plans to equip bridges, tunnels, galleries, noise barriers, carriageways, embankments and retaining walls with photovoltaics.

    According to a press release, ten times more energy could be generated by utilising the sun at the most suitable locations than is currently the case. The photovoltaic potential on these areas could therefore be increased, according to the technical report “Potential for renewable energy production in the canton of Lucerne”, which was published in 2024.

    Two pilot projects should provide concrete figures on the electricity generation potential. Photovoltaic systems are to be installed on the noise protection gallery in Knutwil and at the Rontal bridge near Buchrain and Dierikon. According to the press release, 1 gigawatt hour of renewable electricity could be generated on these sites.

    The plant on the Rontal Bridge is due to go into operation in 2025 and is being realised by the canton, which plans to generate its own electricity there. The Knutwil noise protection gallery has the largest area of the properties analysed. It is the size of half a football pitch and the plant there is scheduled to supply solar power from 2026. Various renovation measures are due to be carried out on the noise protection gallery before the plant is built.

  • Airport tests water reservoir under glacial channel

    Airport tests water reservoir under glacial channel

    Flughafen Zürich AG is starting the construction of a second test well in an ice-age channel located around 300 meters below the airport site, the airport operator announced in a press release. It plans to use the water-bearing channel as a heat and cold reservoir for emission-free heating and cooling of the airport building. A test well installed last fall had already delivered promising results.

    “The volumes of water that could be pumped and the flow rate of the water give us further confidence that the channel can be used to store heat and cold,” said Guido Hüni, Head of Energy and Decarbonization at Flughafen Zürich AG, in the press release. “Further tests are now needed to determine the extent to which this storage facility can be used.”

    A suitable location for the second well is currently being sought. Once installed, it will be connected to the first well for circulation tests. “This next step will allow us to test the efficiency of such a storage facility and, if the results are positive, we can then plan the actual expansion,” explains Hüni.

    The airport operator is counting on being able to cover the majority of the heating and cooling requirements for the airport building via the channel. Depending on the yield, the water reservoir could be combined with geothermal probe fields. The estimated cost of the investment is stated in the press release as around CHF 8 million. Flughafen Zürich AG can rely on financial support from the Swiss Federal Office of Energy.

  • EPFL researchers improve efficiency of solar cells with rubidium

    EPFL researchers improve efficiency of solar cells with rubidium

    Researchers at EPFL have discovered a method for reducing the energy loss of perovskite solar cells, according to a press release. Perovskite solar cells are based on semiconductors with a wide bandgap, but they often suffer from phase separation, which causes a drop in performance over time. The integration of rubidium (Rb) is intended to stabilise the semiconductor material and at the same time improve the energy efficiency of the solar cell. By utilising the lattice voltage of the perovskite film, the researchers were also able to ensure that the Rb ions are fixed in the right place.

    The researchers led by Lukas Pfeifer and Likai Zheng from Michael Grätzel’s group at EPFL also used the X-ray diffraction method to verify and analyse this effect. They discovered that, in addition to the lattice stress, the introduction of chloride ions also makes a decisive contribution to the stabilisation of the material. The chloride ions equalise the size differences between the incorporated elements and thus ensure a more uniform ion distribution. The result is a more uniform material with fewer defects and a more stable electronic structure.

    The new perovskite composition reached 93.5 per cent of its theoretical limit with an open circuit voltage of 1.30 volts. This is one of the lowest energy losses ever measured in perovskite semiconductors. An improved photoluminescence quantum yield also indicates a more efficient conversion of sunlight into electricity.

    Increasing the efficiency of perovskite solar cells could lead to more efficient and cost-effective solar modules and thus reduce dependence on fossil fuels. Perovskites could also be used for LEDs, sensors and other optoelectronic applications. The EPFL’s findings could therefore also accelerate the commercialisation of these technologies.

  • Efficiency boost for hydrogen

    Efficiency boost for hydrogen

    Electrolysis, the splitting of water into hydrogen and oxygen using electricity, is a tried and tested process, but is not yet fully utilised in terms of energy technology. Although the theoretical voltage required is 1.23 volts, in practice 1.5 to 1.6 volts are often necessary. This discrepancy is costly and slows down economic utilisation.

    A research team led by Franz Geiger has now identified a central cause. Before oxygen is released, the water molecules must rotate on their axis in order to align their oxygen atoms with the electrode. Only then can the oxygen evolution reaction take place. This rotation requires a considerable amount of energy comparable to that which holds water molecules together in a liquid state.

    Visualisation using laser technology
    This insight was made possible by a new type of analysis method, phase-resolved second harmonic generation. Using this laser technology, the researchers were able to observe in real time when and how many molecules change their orientation. This data provides a precise energetic quantification of the rotation for the first time. A milestone for the further development of more efficient electrolysis processes.

    Particular attention was paid to the haematite electrode, an inexpensive iron oxide that, despite its promising properties, has so far suffered from low efficiency. The new analysis now reveals where there is potential for optimisation.

    Basic pH value as a lever for increasing efficiency
    Another key factor is the pH value of the solution. The study shows that an alkaline environment, i.e. a pH value above 9, significantly reduces the energy required for molecule rotation. This significantly increases the efficiency of the oxygen evolution reaction. Electrolysis hardly takes place below this threshold.

    This realisation opens up new perspectives for industrial hydrogen production. In combination with targeted catalysts and advanced cell materials, electrolysis plants can be operated more economically and with fewer resources in future.

  • From raindrop to power source

    From raindrop to power source

    In future, water that falls through pipes can do more than just flow away. It can generate electricity. Researchers at the National University of Singapore have developed a method to generate electrical energy using a so-called “plug flow”, a steady stream of drops. In initial laboratory tests, it has already been possible to power 12 LEDs for 20 seconds using only artificially generated rain. The decisive factor here is the separation of electrical charges when the droplets hit a polymer-coated pipe wall.

    The efficiency of this system is remarkable. More than 10 % of the energy of falling drops is converted into electricity. A multiple compared to conventional water systems. The output can be scaled by connecting several tubes in parallel. An approach with potential for urban rain management concepts or as a backup system in solar plants.

    Electricity from friction
    In addition to flow technology, the triboelectric effect also opens up new ways of generating energy. Triboelectric nanogenerators (TENG) convert the kinetic energy of raindrops into electricity through the contact and separation of two materials. In solar systems, these generators can be integrated on the surface without impairing light transmission. This generates additional energy when it rains. An ideal addition for days with little sunshine.

    In the laboratory, 50 to 100 watts per square metre have already been generated, which corresponds to around a third of the maximum output of modern PV modules. According to the Fraunhofer Institute, this technology will soon be ready for the market.

    Prospects for architecture, energy and mobility
    The applications extend far beyond solar roofs. In the future, clothing, shoes or façades with TENG coatings could also generate electricity with every movement or drop of rain. This opens up new possibilities for decentralised power supply, building technology and energy self-sufficient systems, especially in urban regions with high rainfall frequency.

  • Zug as a global centre for blockchain technology

    Zug as a global centre for blockchain technology

    The Canton of Zug is supporting the establishment of the “Blockchain Zug – Joint Research Initiative” with a financial commitment of around CHF 40 million. This innovative cooperation project between the University of Lucerne and Lucerne University of Applied Sciences and Arts aims to develop Crypto Valley into an international centre for blockchain research. The Cantonal Council gave the go-ahead for the project in February 2024.

    New research institute at the University of Lucerne
    A central component of the initiative is the establishment of a Zug Institute for Blockchain Research at the University of Lucerne. With nine new chairs, an interdisciplinary research environment will be created to analyse the social, economic and legal aspects of blockchain technology. HSLU is contributing its expertise from the fields of computer science, finance and engineering, thus creating a unique synergy between technological innovation and a humanities perspective.

    Lighthouse project with international appeal
    The aim of the initiative is to establish Zug as a global centre for blockchain research. Finance Director Heinz Tännler emphasises the importance of this project: “Blockchain has the potential to transform many areas of our lives. With this initiative, we are ensuring that we are at the forefront of this development.” This is not only an investment in the technology of the future, but also a strategic measure to strengthen Zug as a business location.

    Technology meets society
    Unlike many purely technological research projects, the “Blockchain Zug – Joint Research Initiative” takes a broad approach. In addition to the technical foundations, the effects on the economy, politics and society are also being analysed. This emphasises the unique character of the project, which not only aims to drive innovation, but also to understand and shape social transformations.

    Long-term perspective and sustainable funding
    The initiative is designed for the long term. After five years of start-up funding from the Canton of Zug, the research network is to be placed on a sustainable financial footing. An external evaluation after three years will determine the way forward.

  • ETH Zurich provides the key to the energy transition in the power grid

    ETH Zurich provides the key to the energy transition in the power grid

    Europe’s electricity grid is based on alternating current and a precise rhythm that was previously dictated by large power plants with heavy turbines. With the phasing out of coal and nuclear power, these clock generators are increasingly disappearing. What sounds like a technical side note is actually a key challenge of the energy transition. Without a stable frequency, there is a risk of power outages and system instability.

    Because wind and solar systems supply direct current, inverters are needed to convert this into alternating current that is compatible with the grid. Until now, these have passively followed the existing cycle. However, with the elimination of traditional power plants, a paradigm shift is needed. In the future, inverters will have to be grid-forming themselves, a challenge that ETH Zurich has successfully met.

    Algorithm instead of shutdown
    Under the leadership of Prof Florian Dörfler, a research team at ETH Zurich has developed a revolutionary control system for inverters. This prevents systems from switching off automatically in the event of grid faults such as voltage dips. Instead, they remain connected to the grid, actively stabilise the frequency and independently limit their power output. A protective mechanism that avoids overloads and supports the grid at the same time.

    The solution is purely software-based and therefore directly suitable for industrial use. Initial practical tests in the laboratory have been successful. A patent application has been filed for the new algorithms and they could soon be integrated into industrial control systems.

    Roadmap for the energy transition
    ETH’s innovative approach has the potential to become the backbone of the future power supply. Decentralised, flexible, stable, an electricity grid that is no longer supported by a few large central power plants, but by thousands of intelligently controlled solar and wind power plants.

    Industrial partners are invited to work together with ETH students on the realisation, for example through Master’s theses in companies. This creates a direct transfer of knowledge from research to industry and ultimately to Europe’s electricity grids.

    The contribution to the energy transition is considerable. The solution increases grid security, reduces the risk of blackouts and makes the transition to renewable energies technically feasible. A key building block for a resilient, sustainable energy future.

  • DC technology as the key to the energy transition

    DC technology as the key to the energy transition

    Direct current is gaining strategic importance. The OVE DC Day 2025, organised in cooperation with the Smart Grids Austria technology platform, brought together around 80 international experts. Key topics included so-called DC microgrids, local energy grids that network renewable energies, storage systems and consumers on a direct current basis.

    These systems enable significantly more efficient energy distribution, for example in buildings, data centres, industry and self-sufficient island grids. Their potential is also evident in electromobility, for example through the direct coupling of charging infrastructure with renewable power generation.

    Focus on standardisation and safety
    In addition to specific fields of application, technical and normative aspects were also discussed. The speakers presented experiences from ongoing DC pilot projects, new regulatory frameworks and progress in standardisation. It was particularly emphasised that parallel projects are essential in order to create robust standards for DC technology.

    Inspiration from the industry
    With keynote speeches by Yannick Neyret (Schneider Electric) and Friederich Kupzog (AIT) as well as expert contributions from well-known companies, the DC Day offered a high-calibre overview of current developments. The focus was on practical insights from the industry and targeted dialogue between experts. An ideal basis for accelerated knowledge transfer.

    Direct current as an accelerator of the energy transition
    A highlight was the panel discussion with leading figures from the industry, including representatives from Siemens, Eaton, AIT, Schneider Electric and the Fraunhofer Institute. Under the moderation of Karl-Heinz Mayer (Eaton), it became clear that DC systems are ready for widespread use. Provided that standardisation and safety develop at the same time as the technology.

  • Heat from a depth of 2000 meters planned

    Heat from a depth of 2000 meters planned

    The Federal Office for Buildings and Logistics (BBL) has announced an exploratory borehole for a planned geothermal project in Magglingen. Provided the necessary credit approval from the Federal Assembly and drilling permits from the cantonal authorities are obtained, deep water should be detected at a depth of around 1,500 to 2,300 meters.

    According to a press release, “several potential deep water reservoirs” are suspected there, which are to be used for a geothermal plant at the Magglingen National Sports Center of the Federal Office of Sport (FOSPO). The plant could supply heat there from 2029.

    This was preceded by underground investigations in 2023 by the FOBL. These were intended to help obtain a “geological image of the subsoil that is as precise as possible”. The exploration step that has now been announced is intended to further clarify whether the deep water is suitable for the economic use of a geothermal plant in the event of positive evidence.

    Seismic investigations are the basis of many geothermal projects to clarify the exact location of the deep water and because key figures such as water temperature, water volume and flow rate are lacking. The planned exploratory drilling reduces uncertainties and project risks.

  • Fewer hurdles for solar systems

    Fewer hurdles for solar systems

    Switzerland is facing a potentially ground-breaking change in building and energy law. A federal popular initiative demands that solar installations on existing buildings and facilities should no longer require a building permit in future. This should also apply to protected sites and landscapes, with a few exceptions such as nationally important cultural monuments.

    This requirement could open up new perspectives for real estate developers, investors and location promoters. Until now, monument preservation, local heritage commissions and lengthy procedures have often delayed urgently needed energy projects. The initiative, launched by the IG Solaranlagen association, responds to this standstill with a clear appeal to simplify, accelerate and implement.

    Constitutional amendment with effect
    The initiative proposes a new constitutional article that clarifies that no building permit is required for solar installations, regardless of their location. The only exceptions are installations on cultural objects worthy of protection. If the initiative is accepted, parliament will only have one year to create the legal basis. Otherwise, a Federal Council ordinance will automatically come into force.

    This clear deadline creates legal certainty. An important point for project developments and investment decisions in the area of sustainable real estate.

    A signal for Switzerland as a business location
    The initiative strikes a chord with the times. The rapid expansion of solar energy is crucial for security of supply, climate protection and the future viability of Switzerland as a business location. At the same time, it opens up opportunities for the real estate industry. New business models, value enhancement through energy-efficient renovations and sustainable neighborhood developments are within reach.

    The initiative also sends a clear message to politicians and administrators. The energy transition must not be allowed to fail due to outdated processes. Attractive locations are created where innovation is not hindered but accelerated.

  • Automated production for sustainable energy use

    Automated production for sustainable energy use

    Libattion AG, based in Opfikon, has opened a new plant in Biberist for processing used batteries from electric cars. Here, the batteries are used to produce modular stationary energy storage units. According to the company, this is Europe’s largest plant of its kind. The production facility was set up on the site also used by battery recycling company Librec.

    The new facility has a high degree of automation. “Our new production hall enables us to respond flexibly to market requirements and make an important contribution to conserving resources in Europe,” said Stefan Bahamonde, CEO and co-founder of Libattion, in the press release. “By automating our production, we can not only operate efficiently, but also economically and adapt our capacities precisely to demand.”

    In 2022, Libattion produced stationary storage systems with a total capacity of 7 megawatt hours; last year, the company already achieved a total capacity of 27 megawatt hours. The company aims to increase its total capacity to 500 megawatt hours by 2026. Libattion’s storage systems have a modular design and can have capacities ranging from 97 kilowatt hours to 60 megawatt hours. Safety is the top priority, explains Bahamonde: “Thanks to automated production and strict quality controls, we can guarantee the highest safety standards for every storage system”.

  • The 104th immoTable focuses on energy, location attractiveness and innovation

    The 104th immoTable focuses on energy, location attractiveness and innovation

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    Setting the course for strong locations
    Samuel Mösle, Co-Head of the Zurich Cantonal Economic Development Agency, opened the event with a comprehensive overview of the situation. He outlined the current challenges in a global context and emphasized the role of the construction industry in the further development of Zurich as a business location. Topics such as digitalization, artificial intelligence and securing affordable housing play a central role in this. The aim is to further raise the profile of the canton of Zurich as an innovative and competitive economic area.

    Björn Slawik and Frank Koster from ewz presented the prospects for a decentralized and sustainable energy world. The focus was on the dynamic development of the Swiss solar market and new regulatory framework conditions from 2026. The introduction of local electricity communities, such as the ewz.solarquartier concept, will strengthen self-consumption of solar power at district level. The aim is to make efficient use of surpluses and promote the construction of new solar power plants in a market-oriented manner.

    Jan Frenzel from SMG illustrated how AI-supported systems are revolutionizing the world of customer relationship management. In addition to comparing CRM and ERP systems, he highlighted the potential of SaaS solutions for automating business processes. With intelligent tools, customer needs can be identified even more precisely in future – a key factor for positioning on the market.

    Location development and future trends
    Under the title “How can locations remain attractive?”, Beat Bachmann (Canton of Zug), Jakob Bächtold (House of Winterthur), Marc Lyon (Implenia Schweiz AG) and Albert Schweizer (City of Schlieren) discussed the future viability of locations. The topics ranged from demographic change and new forms of living and working to the question of how innovation and sustainability can be specifically incorporated into site development. The discussion showed that successful locations today have to offer more than just infrastructure. They need identity, networking and visions for the future.

    Outlook for the Real Estate Award 2025
    Mara Schlumpf provided information about the upcoming Real Estate Award, which will take place on October 2, 2025 at Trafo Baden. Outstanding projects and personalities from the real estate and construction industry will be honored in five categories. The event promises not only a gala with a networking character, but also exclusive visibility for innovation and quality in the industry.

  • New solar system supplies solar power for sports and leisure activities

    New solar system supplies solar power for sports and leisure activities

    The Münchenstein-based electricity producer aventron AG opened its new solar power plant in Näfels on March 27, according to a press release. The system is located on the roof of the bouldering hall, which is part of the Lintharena building complex. While the Verein Kletteranlagen Linthgebiet (VKL) has made the roof of the bouldering hall available for the solar system, the system itself is fully owned by aventron.

    The solar system has an area of 660 square meters and an output of 145 kilowatts. This means that around 124 megawatt hours of solar power can be generated each year, all of which will flow to Lintharena AG and cover around 10 percent of its electricity requirements. According to Samuel Leuzinger from VKL, the solar system has a double benefit for the association: “We receive additional income from the roof rental from aventron and are doing something for climate protection and the energy transition,” Leuzinger is quoted as saying in the press release.

    The construction of this and another solar installation in neighbouring Mollis was supported by the organizing committee of the Swiss Wrestling and Alpine Festival (ESAF) 2025. Aventron is an energy partner of the ESAF in Glarnerland. Through this partnership, the ESAF organizing committee put aventron in touch with suitable roof owners such as the VKL. “We are implementing this photovoltaic system in cooperation with our partners, the Lintharena, VKL and the ESAF in Glarnerland,” commented aventron CEO Eric Wagner on the new system, according to a press release. “This is an important step towards more Swiss solar power and the implementation of the Energy Strategy 2050.”

    Aventron generates its electricity exclusively from renewable sources. The company now has a nationwide solar capacity of around 65 megawatts. The aim is to increase this to an output of 100 megawatts by 2027.

  • Efficient utilization of agricultural residues

    Efficient utilization of agricultural residues

    Renergon International AG wants to set new standards for decentralized energy production. To this end, the Lengwil-based company, which specializes in technologies for generating clean energy, organic fertilizer and compost from organic waste and residual materials, has developed a mini biogas plant with a fuel cell. The RSD XS “was specially developed for farms in Switzerland and offers maximum efficiency on a minimum footprint,” writes Renergon in a press release on the product launch.

    At the heart of the system is a 2-digester system. Here, 2800 to 3500 tons of solid manure can be fermented annually. The biogas produced is utilized in the fuel cell with an efficiency of up to 80 percent. In addition to green electricity, process heat is also generated for operation.

    Each of the two digester boxes is 15 meters long, 5.5 meters wide and 4.5 meters high. They house a gas storage roof as well as a technical and percolate cellar. In total, the plant requires an area of between 750 and 1000 square meters.

  • New major orders strengthen infrastructure projects in the DACH region

    New major orders strengthen infrastructure projects in the DACH region

    Implenia AG is to carry out several contracts in Switzerland, Germany and Austria in the data center, energy and transport infrastructure and healthcare sectors. The total volume of the projects amounts to over 150 million Swiss francs, the construction and real estate company based in the Glattpark district of Opfikon announced in a press release. They are also “in line with the Group’s strategic focus on large and challenging projects and its sector-oriented specialization in areas with high demand”.

    In Germany, Implenia is involved in the construction of the new Heidekreis Clinic in Bad Fallingbostel. Implenia Fassadenbau will be supplying the façade. In Austria, the Group and two partner companies have been awarded the main construction lot for the Imst-Haiming hydroelectric power station. It includes a 14-kilometer-long headrace, the cavern and the underwater basin for the power plant on the Inn.

    The other orders are for projects in Switzerland. Implenia will build another high-performance data center for data center provider Green on the Zurich West metro campus in Lupfig. In Basel, Implenia is part of the USB K2 consortium, which has been commissioned by Basel University Hospital to carry out the construction work for the new Clinic 2 building. Implenia is also working with partner companies to build a new streetcar line in the canton of Geneva. The Group is renovating the Hagenholz tunnel in the canton of Zurich for SBB. The Federal Roads Office has entrusted Implenia with the redesign of the Versoix junction in Bellevue GE.

  • Company building becomes the power plant of the future

    Company building becomes the power plant of the future

    Energie 360° has converted its headquarters in Zurich into a green power plant, the energy supplier, which is active throughout Switzerland, and the city of Zurich announced in a joint press release. During the now completed conversion and renovation work, a large-scale photovoltaic façade was installed. Its 1600 modules are expected to generate around 325 megawatt hours of electricity per year.

    “In future, Energie 360° will produce around half of its building’s annual energy requirements itself,” Michael Baumer, Head of Industrial Operations of the City of Zurich and Chairman of the Board of Directors of Energie 360°, is quoted as saying in the press release. The solar power generated will also be used to power the company’s own fleet of electric cars, among other things. To obtain approval for the system, Energie 360° had to prove that a fire in the modules could not spread over more than two storeys.

    Energie 360° wants to convert its direct sales exclusively to renewables by 2040. The company is on track to achieve the interim target of 30 percent set for the end of 2025, Energie 360° announced in a further press release. In the financial year ending September 30, 2024, a share of 27 percent was achieved. Specifically, 1238 of a total of 4590 gigawatt hours of energy sold came from renewable sources. “We feel the broad support and recognition for our transformation – among employees, partner companies and customers”, Energie 360° CEO Jörg Wild is quoted as saying in the press release.

  • Investing in depth saves costs and improves carbon footprint

    Investing in depth saves costs and improves carbon footprint

    Pistor’ s initial assessment of the first winter with its new geothermal storage system is positive: “It works so smoothly that we haven’t had to burn a drop of heating oil so far,” Michael Waser, Pistor’s Head of Infrastructure, is quoted as saying in a company press release.

    This saves Pistor over 100,000 liters of heating oil per year at its headquarters in Rothenburg and prevents the release of 330 tons of CO2. This amount is released by more than 200 direct flights from Zurich to Tokyo, for example. Waser expects “that the underground storage facility will save us money in the medium term”.

    Pistor has invested CHF 1 million in the construction work. This involved drilling 75 boreholes to a depth of 250 meters. The result is one of the largest geothermal storage facilities in Central Switzerland, according to the trading and service company for the bakery and confectionery industry as well as for restaurants and care facilities.

    According to Waser, the Pistor cooperative is responding to the wishes of its customers, who are increasingly demanding supply chains that are as socially and environmentally friendly as possible: “We meet them.” The twelve electric trucks in the fleet and renovations with sustainable materials also contribute to this.

    In addition, Pistor transports its more than 27,000 products by train from one distribution center to another. Thanks to this rail transport, an additional 785 tons of CO2 are saved each year.

  • Digital map for storage solutions from renewable energy

    Digital map for storage solutions from renewable energy

    The Swiss Power-to-X Collaborative Innovation Network(SPIN) wants to make information about ongoing and planned Power-to-X (PtX) projects more easily accessible. The network is therefore now working with the Coalition for Green Energy and Storage(CGES). CGES was founded in 2023 by the Swiss Federal Institutes of Technology in Zurich(ETH) and Lausanne(EPFL) together with the Paul Scherrer Institute(PSI) and the Swiss Federal Laboratories for Materials Science and Technology(Empa) in order to develop scalable solutions for a climate-neutral and independent energy system together with industry.

    SPIN has been maintaining a comprehensive list of PtX projects in Switzerland for one and a half years. It shows where and by whom work is being carried out on converting renewable energies into storable energy sources such as hydrogen, synthetic fuels or methane. This database is intended to provide an overview and help to network stakeholders from research, industry, politics and administration.

    An interactive PtX tracker is to be developed as part of the cooperation now agreed between SPIN and CGES. SPIN will provide the data for this and CGES will visualise the projects on a digital map. Both organisations hope that this will not only increase visibility but also facilitate collaboration between various initiatives and interest groups. It is also intended to support decision-makers in adapting the legal framework. It should enable investors to recognise new business opportunities.

    This platform will also sensitise the public to the importance of PtX, according to the SPIN. The first results of the collaboration are expected to be presented in summer 2025.