This report, written by Cédric Philibert of the International Energy Agency, provides an overview of solar thermal technologies and examines the economic, technical and institutional barriers to diffusing these. Examples of barriers include high investment costs, lack of trained engineers and lack of awareness among policymakers and the public.

The author suggests several policies to overcome these — for example, by supporting research and development, encouraging professional training, establishing subsidies for solar thermal technologies, reducing import tariffs and carbon trading.