Clean Line Energy Partners is standing behind what remains of its Plains & Eastern mega-transmission project after the US Energy Department withdrew its participation, while acknowledging the project’s commercial challenges.

Last week the Department of Energy and Clean Line “mutually agreed to terminate their participation agreement” in Plains & Eastern, the DOE confirmed in an emailed statement to Recharge.

Plains & Eastern was perhaps the highest-profile wind-linked HVDC transmission project in the US, designed to bring as much as 4GW of low-cost wind power from the Oklahoma Panhandle through Arkansas and into Tennessee, where it could access grids serving larger populations in the Southeast.