The tech company has invested $75 million in the facility near Amarillo, Texas, which is being developed by Pattern Energy.
If construction goes as planned, the project will be up and running by the end of the year. Siemens has been chosen to supply the turbines, with 79 of its 2.3MW turbines to be installed on site.
The size of the stake acquired by Google was not revealed.
To date, the Silicon-Valley firm has invested in 15 renewable energy projects, including six wind projects, as it looks to reduce its carbon emissions, particularly from its energy-intensive data centres.
These projects accounted for 22% of the company's total energy consumption in 2012. Along with green power bought from the grid, 34% of its power came from renewable sources.
In September, Google announced that it will buy the entire output of the 240MW Happy Hereford wind farm also near Amarillo.
The nameplate capacity of Google's renewable energy projects is now more than 2GW as it pushes towards its goal of using 100% green energy by an unspecified date.