immo!nvest – Die Plattform für Standorte und Immobilien

Tag: Energiezukunft

  • Population calls for accelerated expansion of renewable energies

    Population calls for accelerated expansion of renewable energies

    Switzerland is about to take a decisive step in its energy policy. The government and parliament have set the course for the increased use of solar, wind and hydropower with the so-called “Mantelerlass”. A decisive step in this direction is the “Electricity Act”, which will be put to a popular vote on 9 June 2024. A representative survey conducted by a market research institute reveals that an overwhelming majority of 78% of the population wants to accelerate the expansion of renewable energies.

    Patrick Drack, Managing Director of STIEBEL ELTRON Switzerland, emphasises the importance of this law for the country’s energy future: “The Electricity Act is a fundamental building block for reducing greenhouse gas emissions to net zero by 2050 and aims to make our energy supply more sustainable and secure.” Political efforts are focussing in particular on avoiding energy shortages in winter.

    The survey results also make it clear that the Swiss population is calling for a balanced consideration of nature and landscape conservation alongside electricity production. While 42% are against prioritising electricity production over environmental protection, 58% are in favour of such prioritisation, provided it is carefully weighed up.

    Parallel to the energy transition, an increase in electricity demand is expected, particularly for heating and cooling buildings. Heat pump technology offers an efficient solution here, as it primarily utilises environmental energy. Although a high proportion of new buildings already rely on heat pumps, the heating supply for over half of all residential buildings is still based on fossil fuels. Environmentally friendly alternatives are supported by extensive subsidy programmes to facilitate the financial transition.

    The results of the “Energy Trend Monitor 2024” continue to show a strong 84% of the population in favour of financial support for households in need to convert to environmentally friendly heating systems. Similarly, 79% are in favour of targeted measures to reduce electricity prices for climate-friendly heating systems, such as the heat pump tariff.

  • Building the future of energy

    Building the future of energy

    The property right at the entrance of the municipality is less than 10 kilometers away from the city of Winterthur and is still an idyllic piece of land, with a direct connection to the banks of the Töss and with a view of meadows and forest. The goals of the Energy Strategy 2050 are being built here. The Verde Blu development has been inhabited since autumn 2019. So far, so normal. It is noteworthy, however, that this development covers a large proportion of its energy requirements itself and that exclusively from renewable sources. "The specifications of the Energy Strategy 2050 are an opportunity for the real estate industry," explains Dieter Stutz from Atlantis AG, which is active in the areas of environmental consulting, settlement planning and architecture and who developed the project. The heat supply via groundwater was the best and most convincing solution for the area. Atlantis planned and implemented this complex construction project together with EKZ.

    Sustainable living as a need
    The new construction project Verde Blu with nine residential and commercial buildings comprises 108 condominiums as well as various commercial areas that are used by a Migros branch, a community and a physiotherapy practice, among other things. An old, listed barn serves as a common room and provides rustic charm on the site. In contrast to this is the state-of-the-art technology that supplies the system with energy: groundwater is used as a heat source for the heating and hot water, which supplies the houses with decentralized heat pumps via a so-called anergiering. An anergy ring is a cold local heating system that, in contrast to conventional local heating systems, works with transfer temperatures below 30 degrees Celsius. Anergy networks therefore have no heat losses in the lines, but even achieve additional energy gains through the environmental heat. In summer, the buildings can be passively cooled with the groundwater via the anergy ring.

    A photovoltaic system that is optimally designed to meet the needs of the building provides the electrical energy for the building. The complex was only built after the apartments had already been occupied. Because they wanted to leave the decision for or against solar power to the owners. The fact that the system with a peak output of 100 kilowatts was approved by an overwhelming majority at the first owners' meeting in winter 2019 speaks for itself. Martin Nicklas, who is responsible for modern energy solutions at EKZ, is not surprised: "In the real estate sector, we have long known the need to make a contribution to sustainability in the living area as well." A charging infrastructure for the 209 parking spaces was installed in the lower-level garage. Thanks to load curve management, it is possible to charge the cars in stages if a whole fleet of electric vehicles should one day populate the garage.

    Well-coordinated system
     In Kollbrunn, power generation as well as heating and cooling generation and electromobility are combined in an integrated energy system. The centerpiece is an intelligent control system that maximizes the self-consumption rate and takes over load management. In this way, what is actually the most important goal can be achieved: that the electricity produced by the PV system is also consumed as much as possible on site. The controller uses weather forecasts from an external weather portal for this purpose. An algorithm in the control system evaluates this data and decides on the previous evening whether enough solar power will be produced the next day to charge the boiler and storage tank of the heating system. If the solar production is too low, the boilers are charged during the night at the low tariff, otherwise the system waits until enough solar power is available the next day to start the heat pump.

  • Photovoltaic expansion is in its infancy

    Photovoltaic expansion is in its infancy

    Photovoltaics should be next to the hydroelectric power to buttress a climate-friendly energy future, the association of independent power producers (writes Vese ) in a release . The specialist group of the Swiss Association for Solar Energy has developed an online map on which the development status of photovoltaics in the individual communities, districts or cantons is shown. The interactive map also optionally shows the nationwide status or the expansion of individual power plants.

    VESE explains that the map shows a very heterogeneous picture of the state of photovoltaics. Depending on the canton, the installed capacity per inhabitant is up to five times higher or lower. The cantons of Appenzell Innerrhoden and Jura have the highest level of development with more than 600 watts of power per inhabitant. In contrast, in the canton of Zurich, only 134 watts of power per inhabitant have been installed so far.

    This could not be due to a lack of space, explains VESE in the press release. Even the front-runner Appenzell Innerrhoden is only using its potential to an "infinitesimally small 5.2 percent". For VESE project manager Diego Fischer, the photovoltaic policy is more responsible. It is "a big patchwork in which the hot potato is pushed back and forth between the federal government, the cantons, the municipalities, the electricity companies and the investors, and in the end everyone is wondering why things are not moving faster".

    In order to promote the expansion of photovoltaics, the cantons and municipalities have to make better use of the instruments available to them, says Fischer. Specifically, the VESE project manager addresses the remuneration of solar power fed in and subsidies to supplement one-off payments. Fischer wants to increase the expansion of photovoltaics on the roofs of rental properties through building regulations.