Linda, Supported two wind turbine documentaries in China and have done extensive location scouting all over the mainland. As It seems you may be based in Hong Kong you may have already eliminated Mainland China for very rational reasons, if you are still open to shooting here happy to give you some thoughts and photos:
Inside China is installed 48.5 % of the world’s wind power and 45.8% of the the world’s solar, every province is required by law to make 35% of it’s power generation from renewable sources which means those wind turbines and solar farms are in every region of the country though yes there is a concentration in desert regions.
If I take a guess that you would want to shoot in the next few months two regions come to mind: Heilan mountains in Ningxia near good transportation in Lanzhou. Beautiful jagged mountain range break with wind turbines filling a valley between, large solar farms nearby, good and interesting roads. Though it is winter it is dry cold without snow.
Yunnan has good wind turbines on ridge tops in the Himalaya, Dali county is of note and large installed solar farms of which Shilin county with rolling hills and strange rocks is of note. The weather is good this time of year with clear blue skies and because of the altitude difference you can find everything from lush tropic to snow peaked mountains within a days or a short flight of each other. Yunnan has some of the coolest roads in China too though I admit to not knowing exactly what you mean by” catwalk path.”
Update me on what you are doing, send an NDA if you need to, I’d love to help you put something together.
Shane Nunn (山男) 8613818619991(DEC 5), wechat: billyshane, skype: billy-shane-nunn, or email: shane@gingerfilms.tv