Global energy demand had seen an exponential growth over the decade due to changing lifestyle. At the time when natural gas prices witnessing fluctuation and coal resources are depleting, the world is witnessing a significant gap between demand and supply of energy.
Though as per World Coal Association, global coal reserves are estimated to be 861 tonne and accounts to 42% of total world electricity production; the year on year growth for coal consumption was highest in FY 2013, making it the highest since 1970. The demand for coal consumption is increasing every year thereby leading to depletion of coal reserves at an alarming rate.
Moreover, most regions are economically unviable to extract coal from its bed. It is due to this reason that companies are looking for alternative solution that can lead to harnessing the total potential of coal, without disturbing the ecological balance.
Underground coal gasification (UCG) is an industrial process by which coal is gasified under intense heat and atmospheric pressure. This enables the production of synthetic gas, constituents of carbon monoxide and hydrogen, which are extracted through a well and utilized in various sectors, ranging from power generation to biodiesel and fertilizer production.
Asia-Pacific is projected as the largest market for underground coal gasification over the next 5 years due to impressive growth in end-use industries ranging from power to chemicals. China along with India, and Australia are key markets for underground coal gasification projects.
China is the largest producer as well as the largest consumer of coal based energy. It consumes almost half of the total coal production to meet its energy demand.
China has conducted 17 UCG trials since 1991 to check the economic viability of UCG. Major power generating enterprise SinoCoking Coal is planning to harness coal reserves in Henan Province which was abruptly shut down because of strict environmental compliance set up by Chinese government.
UCG is an environmental friendly approach that empowers companies to scale high power generation. With world’s most populated country, China offers a vibrant platform for energy sector companies to set up their base in China and thereby meet the growing demand of energy in China.
Recently, China signed a whooping US $ 1.5 billion major pact with UK for commercial development of UCG in interiors of Mongolia.
Next prominent market is India. In India, mining contributes 10% of India’s GDP.
With vast coal reserves, India is looking towards harnessing coal without disturbing ecological balance. There are also some sites which are economically nonviable to mine.
Though India’s untapped 88.6 billion tonnes of non-metallurgical coal is found at a depth of 300 to 1200 metre is economically nonviable; UCG makes it economically sound option. Coal India Limited is trying to push the UCG technology to harness the coal in Kaitha (Jharkhand) and Thesgora (Madhya Pradesh) area.
These two promising region is expected to generate high return on investment (ROI) by FY 2025.
Next prominent destination is Australia. In Australia, most companies are undertaking R&D to fully harness the concept of UCG.
At present, three major UCG trials is being conducted by Linc Energy, Cougar Energy, and Carbon Energy at Queensland. Australian government is paying a vigil eye on these projects until the technology is commercially proven.
SinoCoking Coal, Cougar Energy, Carbon Energy, Linc Energy, and ONGC are key market players that have conducted pilot projects on UCG technology.
Future is optimistic for underground coal gasification. With major innovations going around globally, it is expected to meet the needs of people in oil shortage region.
Regions including APAC, and Africa will be a future market for underground coal gasification segments.
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