Energy giant Royal Dutch Shell's enormous takeover of British rival BG Group has won final approval from the Australian government, the company said today. 

Shell said in a statement that its recommended £55 billion (€79 billion) acquisition of BG Group has been approved by Australia's Foreign Investment Review Board (FIRB). 

The European Commission and Brazil's competition authority have already cleared the way for the tie-up, leaving only China's Ministry of Commerce to follow suit.

"I am very pleased to receive this news. The FIRB approval is an important step towards deal completion," said Shell's chief executive Ben van Beurden. 

"The addition of BG's integrated gas assets in Australia to Shell's global portfolio is one of the main strategic drivers behind the recommended combination," he added. 

The Australian Competition and Consumer Commission had already given Shell's mega-takeover the green light last month. 

The deal is aimed at helping Shell boost its flagging output thanks to BG's strong position in liquefied natural gas (LNG), a cleaner alternative to coal and nuclear energy. 

"The Shell-BG combination is a sign of Shell's confidence in the Australian economy," added van Beurden. "It is also a springboard to change Shell into a simpler, more profitable and resilient company." 

Shell said it remains on track to complete the deal in early 2016.