In addition to Australia, the company planned underground coal gasification projects in the United Kingdom, India, Pakistan, China, and Mongolia.
The main underground coal gasification pilot project developed by Cougar Energy was located near Kingaroy, Queensland.
Its first commercial underground coal gasification project in Indonesia with its strategic partner PT MedcoEnergi Mining involved the development of a 30 megawatt power plant using UCG gas as feedstock.
[9] On 16 July 2010, the Kingaroy pilot plant was temporary shut down after traces of benzene and toluene were detected in groundwater monitoring bores.
[13][14] By September 2013 the company was unable to afford the legal struggle and pleaded guilty to three counts of contravening conditions of an environmental authority and was fined A$75,000 plus A$40,000 costs.