This paper focuses on the space heating and hot water energy demand in residential buildings and buildings of the service sector. However, to some extent industrial and high-tem- perature heat supply is also taken into account. The RES-H technologies considered are (1) biomass heating systems (includ- ing small-scale wood log, wood chip and pellet boilers as well as medium to large scale heating plants and district heating sys- tems), (2) heat pumps (air source and ground source heat pumps) and (3) solar thermal systems (hot water and combined space heating and hot water systems).