Check my maths but if Patchawarra is 0.005 mbpd and Australia consumes 0.75 mbpd (half imported) then we need 150 such discoveries for long term self sufficiency.

Personally I think Australia's 108% of 1990 emissions by 2012 is shameful. 80% or 90% would be better, without a land clearing fudge. As a previous poster pointed out, Rudd's 20% RE by 2020 doesn't necessarily mean less coal as they could grow in tandem. Rudd should set a much tougher target of say 100 Mt reduction in CO2e by 2020 plus a cap/depletion protocol on exports of coal and LNG.

I agree that the concept of obtaining credit for emissions avoided is flawed. As I understand it Australia was credited with some percentage of its emissions for ceasing certain land clearing activities.

Where is the flaw in this? The per capita Australian emission is say 30 tonnes p.a. One hundred thousand people from country X where per capita emissions are 1 tonne p.a. wish to emigrate here. We refuse their admittance and claim 2,900,000 tonnes p.a. emissions avoided.

Similarly every female of breeding age who does not have a baby in a given year can claim credit for 30 tonnes emissions avoided each year.