This workshop comprises part of the four-year (1985-1988) non-nuclear energy R & D programme for the development of renewable energy sources which is being implemented by the Commission of the European Communities. The aim of the workshop was to present work by the contracting laboratories in addition to work by numerous other research laboratories in 11 European countries. Discussions were also held on the mid-1990s state of this basic directed research in photochemistry, photoelectrochemistry and photobiology, and where the future emphasis may usefully lie. Thus the text presents the...