Stanford University’s Steyer-Taylor Center for Energy Policy and Finance and the German Ministry for the Environment brought together some 20 top global solar executives for a day-long workshop at Stanford in summer 2013 to probe a crucial but little-explored question about the economic competitiveness and impact of this small but rapidly growing energy sector. At issue: What will the globalizing solar industry look like in 2025? Which sorts of companies, and which countries, will do what?