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This paper assesses market development as a sustainable approach to increasing the use of renewable energy, specifically solar, using the case of Ghana's Solar Project. This strategy is intended to overcome some weaknesses of donor-driven and fee-for-service models in sustaining gains beyond the end of projects. The literature shows that developing a sustainable market for solar products in underserved rural areas requires an integrated approach addressing demand, supply, financing, quality, and facilitation. The Ghana Solar Project was well designed to overcome constraints in all of these areas. Results were positive in terms of numbers of systems purchased and impact on perceived benefits and willingness to pay. Benefits were documented with respect to education, information, mobile phone charging, income generation, and health and fire risks. Competition increased, and system costs fell. Financial …