This project focuses on identifying when transmission will be a barrier for the development of offshore wind in the Great Lakes and explaining why it is a barrier in certain situations. The project examines the costs, technical aspects, planning and siting procedures, and environmental impacts of building transmission. This project presents and analyzes select policy options to address these transmission-related barriers to offshore wind development in the Great Lakes. These policy options are informed by a literature review, a stakeholder and key interview process, and quantitative and spatial analyses. The project team interviewed over twenty professionals working on transmission issues, including transmission companies, electrical utility companies, wind developers, government agencies, environmental organizations, academics, and others.