North American liquefied natural gas projects, once believed to be the panacea that would save Asia from paying top dollar for the super chilled fuel, are proving to be less of a game-changer than originally expected.

High costs, grueling regulatory processes and mounting social opposition have slowed the development of new capacity in Canada and the United States, tempering early hopes that a flood of cheap western gas would drive down prices.

A sudden rise in demand for LNG after the Fukushima nuclear disaster in March 2011 created a tight market for the commodity, pushing Asian prices to new highs and sending buyers scrambling to make deals with fledgling producers in North America.