This paper describes the lessons learned from the major RD&D activitie
s at Energy Research Institute (ERI), King Abdulaziz City for Science
& Technology (KACST) in the field of solar energy. Photovoltaic, solar
thermal dishes, solar water heating, solar water pumping and desalina
tion, solar hydrogen production and utilization are some of the areas
studied for solar energy applications. Recommendations and guidelines
for future solar energy research development, demonstration and dissem
ination in Saudi Arabia are also given.