By Paul Dvorak | November 8, 2016IRS wind projects win over $206 million in section 1603 grant litigation With 386 GE and Vestas turbines, the facility is comprised of: Alta I (150 MW), Alta II (150 MW), Alta III (150 MW), Alta IV (102 MW), Alta V (168 MW), Alta X (137 MW) and Alta XI (90 MW).