Shareholders of Royal Dutch Shell today approved the company's $49 billion takeover of BG Group.

The vote clears one of the final hurdles for a deal that will create the world's biggest liquefied natural gas (LNG) trader. 

As many as 83% of shareholders voted in favour and 17% against the deal, one of the largest in the energy sector in the past decade. 

BG shareholders will cast their votes on the deal in London tomorrow. 

"Our immediate focus is on the successful completion of the transaction and we now await the results of tomorrow's BG shareholder vote," Shell's chief executive Ben van Beurden in a statement. 

Over 40% of Shell's shareholders also own around half of BG's stock, according to Reuters data. 

If the deal is approved by all shareholders on both sides, the two companies will merge on February 15. 

Shell will then become the world's most powerful LNG trader and gain access to valuable oil resources offshore Brazil and in Australia.