15 example systems from a wide variety of applications around Europe were presented in detail in the first two meetings of the Task 73. Discussion on which market-relevant figures should be displayed for each system. And where to have a common information need identified the established “A3” value which represents the energy performance on the system level. Also it became obvious that the market growth forbids to present installations in “show them all” approach but rathe suggests to show the impressive width of applications PVT Systems have been demonstrated already: single family homes, refurbished multifamily houses in urban context, commercial swimming pool, municipality buildings, big office buildings, district heating.