Solar heating systems have been implemented in large scale in Denmark in the last years and are also very common in Germany and Austria for instance. They are 100% fuel-free and are characterized by very low operating costs. Solar heating systems are a base load technology, that can be easily and flexibly combined with other technologies. They are furthermore modular extendable, which allows the installation of any size.
The main challenge of a solar heating system is the fact that its main production occurs in summer and during daytime, when the heat demand is lowest – both on daily and seasonal basis. Therefore, an important part of the technology is the heat storage, which can balance the variations in the solar thermal production.
A storage tank can facilitate approximately 20-25 % of the annual heat demand to be covered by solar thermal. A seasonal storage can facilitate a higher solar fraction, in principle up to 80-100 %.
The Roadmap differs between large scale solar heating systems, often combined with large (seasonal) storages and smaller systems with a focus on so called prosumers.
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Erfa-møde om varmepumper i Fjernvarmens hus, Kolding den 02.09.2020. Læs mere: Program – Erfa-møde om varmepumper – 02-09-2020 (003)
International Conference on Smart Energy Systems, Aalborg on 6-7 October 2020. Learn more: