To solve the climate crisis, the world must make a wholesale shift to renewable energy technologies. With surging growth in emerging markets, this transformation takes on even greater urgency. The challenges - and opportunities - are immense.

Selling Solar considers how such a shift might happen. Focusing on the case of solar photovoltaics, it shows how, at the start of the twenty-first century, this promising technology began to diffuse rapidly in select emerging markets, after years of struggling to take off. What were the initial barriers to diffusion? How were they...