Twin Groves was the largest utility-scale wind farm east of the Mississippi River upon completion.

[2][3][4] The Twin Groves Wind Farm lies in eastern McLean County just east of Bloomington on Illinois State Route 9.

[5] The towers are spread out over 22,000 acres (8,900 ha) of McLean County,[1] near the villages of Arrowsmith, Ellsworth, and Saybrook.

The current total capacity at Twin Groves Wind Farm is 398 megawatts.

[2][8] The wind farm pays property taxes, of which Ridgeview School District will start collecting $300,000 a year,[8] while Tri-Valley School District will collect between $200,000-$250,000 a year.