Huaneng Renewables Corporation Limited announced operating results for the month and year to date ended December 31, 2017. For the month, the company reported gross power generation of 2,202,697.3 MWh against 1,870,878.5 MWh a year ago. For the year to date, the company reported gross power generation of 22,433,827.0 MWh against 19,435,069.4 MWh a year ago.