This white paper discusses Denmark's leadership in wind energy through its 40+ years of experience. Denmark has over 5,000 MW of installed wind capacity, meeting over 50% of its electricity demand on windy days. It has the highest share of wind power integrated into its national grid worldwide. Danish wind companies are globally competitive, with the sector exporting over $7 billion in 2014 and employing over 28,000 people. The paper outlines how Denmark continues to reduce the cost of wind energy through collaboration across the industry and unique testing facilities that drive innovation.