How efficient is UCG in recovering energy from coal seams?
UCG converts 80% of the coal energy into energy in the gas. UCG recovers more coal than conventional underground coal mining, because it gasifies the whole seam and avoids the loss of resource in coal washery rejects. When compared to coal seam gas energy recovery from the same coal seams, UCG produces more than 20 times the energy from the same area. UCG gives by far the highest energy recovery from deep coal of any extraction technique.
