Increasing organic food production has earned increasing attention during the last decades by EU and Swedish policy makers alike. Green Public Procurement is seen as a useful tool to shape consumption and production trends, increase demand for organic food and thereby alter the market structure in favor of organic food. However, the impact of a green procurement policy is an empirical question and depends on market characteristics such as the size of public consumption in the particular market, the supply elasticities of producers and other intermediate actors, and demand elasticities of private consumers. In this seminar, I will present some previous, ongoing and future research by me and my colleagues that relates to green public procurement in general, and organic food policy in particular.