Online published on 16 January, 2017.
This paper summarises the present situation of emerging cold fusion or low energy nuclear reaction (LENR) systems which could provide an allegedly inexhaustible and non-polluting source of power and heat through a decentralised low cost process. In particular, it reviews the development of the E-CAT technology patented by Italian inventor Andrea Rossi and investigates the controversy that surrounds it, as may be expected of a highly disruptive revolutionary scientifi c breakthrough.