Zug sets new standards with Circulago

January 2025

With the new Unterfeld energy centre, the canton of Zug is taking a significant step towards a sustainable heating and cooling supply. The utilisation of lake water and innovative sector coupling technologies make the Circulago energy network a central component of the energy transition and the Energy Strategy 2050.

Since October 2023, the Unterfeld energy centre has been supplying several Zug neighbourhoods and parts of Baar Süd with climate-friendly heating and cooling in stages. Thanks to the use of lake water as the main energy source, the plant meets the growing demand for environmentally friendly energy. With its modern technology, the centre demonstrates how the heating and electricity sectors can be intelligently linked. This model shows the future of energy supply and reduces the need for individual heating and cooling systems through centralised generation.

Sector coupling as the key to the energy transition
Sector coupling links the energy sectors of electricity, heat and transport, thereby contributing to the stability of the electricity grid. At the Unterfeld centre, technologies such as “Power-to-X” are used to efficiently convert surplus electricity and reduce the load on the power grid. This innovative approach plays a key role in decarbonisation and makes an important contribution to achieving climate targets. The proximity to the Herti substation also creates optimal conditions for combined heat and power generation and the utilisation of renewable energy sources.

Efficient and space-saving solution for the region
The Circulago energy network offers a space-saving solution for energy supply in Zug, where space is scarce and expensive. The centralised generation and distribution of heating and cooling eliminates the need for individual heating systems and increases the efficiency of energy distribution between the city of Zug and Baar South. The network not only significantly reduces CO2 emissions, but also ensures stable prices and economic planning security in the long term – a decisive advantage for investments in new buildings or when replacing existing heating systems.

Long-term benefits for buildings and industry
Circulago enables buildings and industrial plants to be connected to a district heating system that provides a reliable and low-emission source of energy. By combining modern storage technologies with renewable energies, the network increases overall energy efficiency. In addition, the centralised heat supply relieves buildings of the investment and reinvestment costs that would be incurred with individual heating solutions. With these advantages, Circulago is creating a strong basis for the economic future and sustainable energy supply in the region.

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