The APA Group-owned Victorian Transmission System (VTS) is forecast to have the highest demand, with a throughput of 221.7 petajoules per annum (PJ/a) needed in 2010 to meet requirements, increasing steadily to 332.7 PJ/a in 2029, under a medium economic growth scenario.

The 1,992 kilometre VTS comprises high pressure gas transmission pipelines in Victoria.

Demand in Sydney, including APA’s Moomba to Sydney Pipeline system and Jemena’s Eastern Gas Pipeline, is the next highest, forecast to increase steadily to 128 PJ/a in 2029, under the medium growth scenario.

Forecasts were also made under low and high economic growth demand scenarios and differing peak summer and winter demand conditions.

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The report forecasts that in 2017, 217 PJ/a of natural gas will be required to support LNG export. This is expected to rise to 1,302 PJ/a in 2029.

The full report can be found here under the title GSOO Aggregated Demand Forecasts.