NEW DELHI: Green seems to be the catchword for the government heading into the next year as it gears up to achieve 175 gigawatt of clean energy by 2022 through auction of 1,000 MW of rooftop solar power, Rs. 13,000 crore investment in solar parks and a Rs. 21,000-crore package to boost local manufacturing of panels. By all yardsticks, 2016…