The 100th object: Solar lighting technology and humanitarian goods

At the end of 2010, the British Museum unveiled the final artefact in their exhibition ‘A History of the World in 100 Objects’: a portable solar-powered lamp designed for and sold to people living without access to mains electricity in Africa and Asia. Solar-powered lights have become iconic objects of social entrepreneurship in Africa and Asia and this article explores the work involved in producing them as humanitarian goods. Following the 100th object from its conception in a Stanford University classroom to points of sale and use in rural India, the article explores how it has been made to materialise both an ethic of care and an ethic of commercial interest. Drawing from traditions in the social study of technology and the conceptual vocabulary of Michel Callon, the author argues that the significance of objects like the ultra-affordable solar lamp lies in their capacity to make and define markets at the ‘bottom of the pyramid’.