Free distribution of a technology can be an effective development policy instrument if its adoption is socially inefficient and hampered by affordability constraints. Improved cookstoves may be such a case: they generate high environmental and public health returns, but adoption is generally...

Providing electricity to the unconnected 1.1 billion people in developing countries is one of the top political priorities of the international community, yet the costs of reaching this objective are very high. The present paper examines whether the objective and the associated costs are...