9. Authorized issuers of certificates of origin: International systems recognized by the EFTA Surveillance Authority or the European Commission to issue certificates of origin for renewable fuels. 1 3. art. Fuel sellers in Iceland must ensure that at least 3.5% of the energy value of their total sales of fuel for use in transport throughout the country per year is renewable fuel. From 1 January 2015, it must be ensured that at least 5.0% of the total energy value of fuel for use in land transport per year is renewable fuel. Only fuel that fulfills the detailed provisions of Article 4. can be used to fulfill this condition. Renewable fuels produced from organic or inorganic waste materials that cannot be used for human consumption or as animal feed, such as from organic waste, solid household waste, cellulose and lignocellulose, can be counted twice for the same amount otherwise of renewable fuel, to meet the conditions of paragraph 1.