In mid-March, much was made about huge investment plans to develop Australian natural gas.

Now, with US nat gas prices at a decade-low and lax regulation around shale gas, that investment is shifting to the USA.

On top of competition through extra projects and potential LNG export volumes, calls from Asian gas buyers to link LNG sales to cheaper US gas prices, rather than the soaring oil prices that recent Australian LNG contracts are linked to, could affect the viability of yet-to-be approved Australian projects or expansions.