 Hereafter you find a plant in Rise (DK) with a new collector producer, Marstal VVS (DK), a plant in Ry (DK), one of the oldest in Europe, a plant in Hamburg and a number of plants below 3,000 m².It may be relevant mentioning, that the island of Ærø in Denmark has three of the major CSHP, Marstal, Ærøskøping and Rise.Sweden has played a major role in the development of large-scale solar heating.