Avangrid Renewables LLC is purchasing the 152-MW Bitter Root Wind Farm in Yellow Medicine County, Minn., from Renewable Energy Systems Holdings Ltd., according to a report in the Minneapolis Star Tribune.

The project, which U.K.-based RES proposed in 2017, had been held up by the Minnesota Public Utilities Commission related to objections raised by labor unions.

Labor unions were concerned most workers would be non-union and brought in from outside of Minnesota, as has been the case with past RES projects, according to the report.

RES challenged the decision, which was headed for a "contested case proceeding," before ultimately reaching an agreement to sell the project to Avangrid in late March.

The Minnesota PUC voted to restart the approval process with Avangrid as the owner on May 16, and close out the petition with RES.

Avangrid Renewables is a subsidiary of Iberdrola SA. (Minnesota PUC Docket No. IP6984/CN-17-676; IP6984/WS-17-749)