The cost of wind is predictable: It is free. The availability of wind is predictable, too. Current wind maps and site testing measure average annual wind speeds that support the predictability of a site’s annual power generation. Vestas has the largest supercomputer in the industry. This eight-meter high by two-meter long giant uses NCAR (National Center for Atmospheric Research) data from as far back as 20 years in correlation with the site developer’s data to increase the predictability of future wind patterns.