Based on these sustainability criteria, requirements for sustainable supplies have been included in Statoil's biofuel purchase contracts. The sustainability clauses in the purchase contracts include requirements related to carbon stock preservation and soil management, water use, air emissions, fundamental labour rights and employment practices, the acquisition and use of land, and impacts on local food security. 

Statoil has the right to independently audit the seller's contractual commitment to sustainability and to audit information on sustainability requirements provided to Statoil. 

More than 50% of all bio ethanol supplied to Statoil in 2009 was sourced from Europe, the rest from South America. The feedstock basis for ethanol was cereals and sugarcane. Almost all biodiesel supplied to Statoil in 2009 came from Europe, the rest from North America. The feedstock basis for biodiesel was mainly rapeseed. 

The blending of bio-components in transportation fuel is a measure aimed at reducing greenhouse gas (GHG) emissions by the transport sector. In 2009, the volumes of biofuel sold by Statoil reduced carbon dioxide emissions by 287,000 tonnes.