While biofuels can create a variety of problems, as we look beyond the end of the petroleum era to a time when we can no longer depend on a single energy source, then unless we are to be forced back to nuclear energy for our electricity, we will need to find distributed, diverse energy sources, and the search for the most appropriate biofuels will continue.
生質燃料固然引發種種爭議，但放眼未來，石油世紀即將落幕，能源不可能再「定於一尊」的情況下，除了電力供應恐將萬不得已地走上「核能」的回頭路外，分散式、多樣化的嘗試也勢在必行，有關生質燃料最適料源的尋找也會持續。