Australia's east coast gas crisis has prompted calls from big industrial energy users to set aside some gas for domestic consumers, replicating a policy already in place in Western Australia.

The oil and gas industry is fighting any such move, and has made its opposition clear in the days since executives met with the Prime Minister to nut out solutions to the looming domestic gas shortage.

So how is Western Australia's 15% reserve policy working, and should it be considered by other states?