It has been a hard road: Hepburn Wind took six years to complete. But since then the project has received local, state, national and global awards. Last year it won the World Wind Energy award for best global project, judged by the industry's international association. . . The wind farm is a co-operative - more than half its 2000 members are locals, and every member has only one vote. It was nominated as the flagship project of the UN's International Year of Co-operatives in 2012.