NextEra Energy Inc. is planning to repower its Langdon wind farm in Cavalier County, N.D., boosting the facility's installed capacity to 170.16 MW from 159 MW.

However, the maximum level of injections will not change, and the point of interconnection and interconnection facilities will remain the same, according to a June 13 filing with the Federal Energy Regulatory Commission.

The repowering would involve replacing and refurbishing certain mechanical components on at least 93 of 106 turbines and replacing Langdon Wind LLC with an entity named Langdon Renewables LLC as the owner of the facility.

The facility sells its output on a firm basis through a 25-year contract with Minnkota Power Cooperative Inc. with an initial term ending in 2032 for approximately 100 MW, a 25-year contract with Minnkota with an initial term ending in 2033 for approximately 40.5 MW, and a 25-year contract with Otter Tail Power Co. with an initial term ending in 2032 for approximately 19.5 MW.

Under the proposed transaction, the two power contracts with Minnkota will be assigned to Langdon Renewables as they have been amended to both continue for another twenty years upon completion of repowering. The contract with Otter Tail has not been amended but is still expected to be assigned to Langdon Renewables.

NextEra expects the transfer of ownership to close by the third quarter. The company is asking FERC to approve the transaction no later than Aug. 1. (FERC docket EC18-101)

Langdon Wind and Langdon Renewables are subsidiaries of NextEra.