There is a gap in the literature on the assessment of renewable energy projects regarding the role of regulatory real options (RROs) that do not depend entirely on the project promoter and yet affect the value of the project. This paper provides a methodology for evaluating investments in offshore wind generation in Denmark, based on the use of this type of options. The main results show that these RROs held by the administration, decrease the value of these renewable generation projects in Denmark. This confirms previous research for onshore generation in the same country.