Barely 16 miles from central Delhi, a 40-year-old coal-fired power plant run by NTPC Ltd. stands testament to the bargain struck by India’s capital city: The world’s dirtiest air for electricity. The state-owned utility is now seeking to cut emissions across its facilities in India, starting with its oldest — the one in Delhi. NTPC plans to spend 12 billion rupees ($189 million) annually on technology upgrades, a company official said, asking not to identified as the person isn’t authorized to speak on the subject. “Their Badarpur plant is running way beyond its life,” said Chandra Bhushan, deputy director general at Centre for Science and Environment , a lobby group based in the city. “The result is its coal consumption is very high and so are the emissions.” NTPC’s clean-up attempt is part of Prime Minister Narendra Modi’s $25 billion spending proposal to revamp aging utilities as he seeks […]