Abstract: There is provided solar energy harvesting apparatus (20) including a clear polycarbonate body (21) including a transparent front face (23) and supporting a thermal absorber (27) adapted to absorb incident solar radiation. The thermal absorber (27) transfers heat via a fluid connector (28) to a circulated-fluid system and in addition controls the temperature of a photovoltaic element (24) mounted on the absorber (27) and connected to an electrical harness by electrical connectors (25, 26). The polycarbonate body (21) has complementary edge mating profiles (32, 33) engaging with a standard-tiled roof structure to replace some of the standard tiles thereof, and is secured conventionally to roof battens by a batten screw (29).