The east coast’s biggest domestic gas supplier has agreed to help bridge a potential energy shortfall overhanging households and manufacturers, by locking in a new supply agreement with the federal government.

The Bass Strait oil and gas joint venture operated by ExxonMobil and part-owned by Woodside Energy has committed to pump more than 260 petajoules of gas into the domestic market by 2033, the equivalent of about 2½-years of gas-powered generation demand, the government said.