A sustainable and much larger market for active solar water heating systems is necessary if the sun is to be an important source of energy for water heating in the future.

To create a larger and sustainable market for active solar water heating systems.

Market growth can be created from the demand and supply sides. This task was focused on the demand side via the creation of large buyer groups. Large volume purchasing can reduce production, marketing and installation costs and stimulate innovation in the development of products with improved cost-performance.

IEA Task 24 began on the 1st of April 1998 and was completed on the 31st of March 2003. The following countries participated in Task 24: Canada, Belgium, Denmark, The Netherlands, Sweden and Switzerland.