Iceland
2013 Act no. 40 (on renewable fuels in transport on land)
Art. 4 defines the fuels complying with this Act, and states that manufacturers or retailers of renewable fuels shall demonstrate that the fuel is renewable and its production complies with the sustainability criteria. Only biofuels considered sustainable by the Ministry in charge of this matter can be deemed renewable (based on biodiversity and carbon impacts).
Documents
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5% land transport fuel from renewable by 2015