Incidental energy

Incidental energy
Incidental energy generated by occupants

Incidental energy is derived from the use of a building generally in the form of heat emitted from processes such as cooking, lighting, the use of small power goods and the heat generated by the occupants themselves.

Incidental energy can contribute significant heat gain during winter, but can contribute towards overheating in the summer. In schools this is a particular issue due to high occupancy densities which occur for short periods of time, for example, a classroom containing 30 pupils for an hour can heat up very quickly but when the class becomes unoccupied the temperature will fall quickly.
Energy use associated with occupant activities is increasing, through the use of more electrical equipment such as ICT.

WLGA - CLILC Llywodraeth Cynulliad Cymru / Welsh Assembly Government