India’s wind turbine manufacturers are in discussions with state and federal authorities about a plan to repower old turbines with higher-capacity, higher-efficiency new ones to boost power output without sacrificing more land. Modern turbines can replace a total of 8 gigawatts (GW) of old and less efficient turbines, Aditya Pyasi, CEO of the Indian Wind Turbine Manufacturers Association, told Bloomberg in an interview published on Wednesday. …