Swiss charterer and trader Gunvor Group has closed what it called an "innovative" new $745m credit facility linked to sustainability.

It said it is the first energy commodities trading company to arrange a loan with an interest rate dependent on its year-on-year improvements in areas such as transparency, governance and the environment.

The loans are a renewal of a 2012 deal worth $635m and will provide working capital for its refineries in Antwerp and Rotterdam.