History of Central Solar Heating Plants
- The history of CSHP given here is mainly a Nordic-European perspective on the topic.
Sweden has played a major role in the development of large-scale solar heating. According to (Dalenbäck, J-O., 1993), the first steps were taken in the early seventies in Linköping, Sweden, followed by a mature revision in 1983 in Lyckebo, Sweden. Inspired by this work, Finland developed its first plant in Kerava, and the Netherlands built a first plant in Groningen. These plants are reported under the International Energy Agency by (Dalenbäck, J-O., 1990). Note that these plants did already combine CSHPs with large-scale thermal storage.
The first large-scale solar collector fields were made on-site in Torvalle, Sweden, 1982, 2000 m² and Malung, Sweden, 640 m². Prefabricated collector arrays were introduced in Nykvarn, Sweden, 4000 m² in 1985. There was from the beginning a strong international perspective and cooperation within this research field, through investigation with the European Communities (Dalenbäck, J-O., 1995) and the International Energy Agency (Dalenbäck, J-O., 1990). Denmark did enter this research area parallel to the Swedish activities with a plant in Vester Nebel in 1987, one plant in Saltum in 1988 and one in Ry in 1989, taking over the know-how for prefabricated solar collectors of large size by the Swedish company Teknoterm by the dominating company ARCON, Denmark. In the later 1990s Germany and Switzerland were active among others with plants in Stuttgart and Chemnitz.
Due to cheap land prices, in the Nordic countries the collector arrays could be ground-mounted in agricultural areas. Countries with high ground prices tend to place solar collectors on building roofs, following the 'block plant' variant of CSHPs.
By 1999 40 CSHPs were in operation in Europe generating about 30 MW of thermal power .
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