Enel SpA, through its Enel Green Power North America subsidiary, announced March 19 that it signed a contract to sell the entire output of the 320-MW Rattlesnake Creek wind facility to Facebook Inc. by 2029.

The wind farm under construction in Dixon County, Neb., is slated to begin operations by the end of 2018 and become fully operational in 2019. Construction cost approximately $430 million, according to a March 19 news release.

Under a November 2017 deal, Enel was to supply 200 MW to Facebook under a long-term power purchase agreement. The latest agreement adds to that by gradually increasing to account for Facebook purchasing the plant's overall output in 2029, following Facebook's decision to expand its data center in Papillion, Neb. Energy from the wind farm will enable the expanded data center to be 100% renewable-powered, according to the news release.

Before the eventual sale to Facebook, Enel will sell 10 MW of the facility's generation to Adobe Systems Inc. from 2019 to 2028 under a bundled power contract.