Coal supply shortage continues to haunt NTPC, the country's largest power generator, with latest government data showing 31% of the company's coal-based capacity is running with 'hand to mouth' coal stock. As on November 12, six major NTPC power plants, with a combined capacity of 12,480 MW, have fuel stock of 'zero' days, data from the Central Electricity Authority show. NTPC's 2,980 MW Sipat plant in Chattisgarh, 2,340 MW Kahalgaon unit in Bihar, 2,100 MW Farakka station in West Bengal, 2,400 MW Kudgi unit in Karnataka, 2,000 MW Simhadri plant in Andhra Pradesh and the 660 MW Solapur plant in Maharashtra are grappling with severe fuel shortage. Interestingly, the first three aforementioned plants are pit-head stations, suggesting that production at the mines dedicated to specific power plants are not being able to cater to the necessary requirements.