Expert system and Delphi method were used to est. the shares of biocomponents in motor fuels in 2020-2030. The share of biofuels in transport fuel will increase from 10.3% in 2020 up to 19.7% in 2030. The share of 1st generation biofuels on 2020 was estd. as 74% but will decrease down to 25% in 2030. The share of 3rd generation biofuels will increase from 5% in 2020 to 16% in 2030.