Over the past decade, Gordon Hughes, a professor of economics at University of Edinburgh in Scotland has been studying the costs and performance of wind energy. Hughes, who spent much of his career working on energy access issues at the World Bank, explains why the capital and maintenance costs of offshore wind energy projects are increasing, why the promise of  “green” jobs has “never been realized anywhere,” how land-use conflicts are halting the expansion of renewables in Europe, and why it is “profoundly dangerous” to believe we can run the world economy solely on renewables.