Instead,emissions should be calculated for multiple LNG source countries because the gas shipped to Victoria could come from a number of sources,the analysts'submission suggests.
The volume of greenhouse emissions attached to the controversial project will be among issues explored in the 10-week hearing into the environmental effects of the proposed gas terminal,which began on Monday.
It is the largest and most complex environmental assessment Victoria has seen,with 6058 submissions,including a record number of public objections,and 49 pieces of expert evidence.
AGL's plan to locate a terminal in the bay and connect it to a 57-kilometre pipeline from the Mornington Peninsula to Pakenham has faced delays and a bitter backlash from environmental groups and residents worried about the potential risks to the area's ecosystems and tourism.
Opponents include federal MP Greg Hunt,several shire councils (Bass Coast,Mornington and Cardinia),recreational fishing peak bodies,tourism operators,local business owners,and environment and climate groups.
On Monday lawyers for AGL told the hearing the project would not have unacceptable environmental impacts,and would help address the predicted shortfall in the national gas supply.