Governor Mary Fallin on Monday signed the bill that sunsets the tax credit for the wind industry on July 1, 2017. The tax credit previously would have expired in 2021. "The zero emissions tax credit was key to the growth of wind energy in Oklahoma, and I'm grateful to the industry for their ambitious success, as well as their willingness to work with the state to address our challenging budgetary circumstances," Governor Fallin said. Supporters say ending the tax credit early will eventually save the state about $500 million.