Houston-based independent ConocoPhillips has signed an agreement with China’s CNOOC Ltd to develop an offshore wind farm to supply green power for oil production at the Penglai oilfield at Bohai Bay, offshore northeastern China.

The agreement to launch the Penglai Offshore Windfarm Pilot Project was signed at the fifth China International Import Expo in Shanghai.

With four wind turbines with a total installed capacity of 34 megawatts, the partners say the wind farm will tie back to the existing central processing platform via subsea cables, distributing energy to the field’s power grid system.