This research investigates and analyses the use of energy-effi cient
lighting design in an exclusive spa project in the southwest of England. The
originality of this work is the area of investigation, which is in an exclusive spa.
Before this study, hardly any investigation has been done in this kind of building,
as many previous studies focused on energy-effi cient lighting in offi ce buildings.
The main area of this investigation includes the study and analysis of the good
practice of energy-effi cient lighting. The method used in this case study is to
some extent similar to ethnographic research because the researcher was heavily
involved in the energy-effi ciency lighting design as a lead building services design
engineer from stage B to stage K of the Royal Institute of British Architects (RIBA)
plan of work. The major fi ndings in this case study are that the energy-effi cient
lighting design could still be achieved without sacrifi cing the visual comfort and
aesthetic requirement of the building, which are a critical feature of an exclusive
spa. Energy-effi cient lighting could be implemented if it is considered right from
the early design stage.

• Energy-effi cient lighting design: A case study in an exclusive spa project