Does biofuel depend on the sun?

Yes, biofuel production relies on sunlight indirectly, as it is derived from biomass, including crops like corn and sugarcane. These plants utilize photosynthesis to convert solar energy into chemical energy, which can then be processed into biofuels such as ethanol and biodiesel. Thus, the growth of these energy crops, and consequently the availability of biofuels, fundamentally depends on sunlight.