Coal 2017 - IEADec 18, 2017 . After falling down below USD 140/t in June, coking coal prices went up over USD 200/t in September, largely on strong demand in China. Price volatility is here to stay. Changes in China, whether in policy or economic circumstances, feed volatility in global coal markets given its sheer size and dominance.market share coal,Renewable energy gains market share in EIA 2018 projection, with .Dec 13, 2017 . Renewable energy gains market share in EIA 2018 projection, with gas, coal steady . In terms of market share, wind power accounted for 5.6% of all U.S. utility-scale generation in 2016 and is expected to rise to 6.4% in 2018, EIA energy analyst Tyler Hodge told Utility Dive. Solar power, on the other hand,.