Do biofuels produce less CO2 than fossil fuels?
Ava Robinson
Published Apr 25, 2026
When biofuels are burned, they emit roughly the same the amount of CO2 per unit of energy as petroleum fuels. Therefore, using biofuels instead of fossil fuels does not change how quickly CO2 flows into the climate bathtub.
Do biofuels release less carbon than fossil fuels?
MYTH: In terms of emissions, biofuels emit the same amount as gasoline or more. FACT: Biofuels burn cleaner than gasoline, resulting in fewer greenhouse gas emissions, and are fully biodegradable, unlike some fuel additives. Cellulosic ethanol has the potential to cut greenhouse gas emissions by up to 86%.Are biofuels better for the environment than fossil fuels?
The main benefit of biofuels over fossil fuels is that burning them puts less of the greenhouse gas, carbon dioxide, into the atmosphere. It's all to do with the carbon cycle. Everything living, whether plant or animal, is made up of carbon.Why do biofuels release less CO2?
Fossil fuel consumption is a major cause of climate change. Biofuels can reduce the consumption of fossil fuels and thus reduce carbon dioxide emissions, because biofuels are carbon neutral.Do biofuels produce CO2?
But just because biofuels are made from plants, it doesn't mean they're carbon neutral. Although direct emissions from biofuel are lower than fossil fuels – burning enough biofuel to generate one megajoule of energy gives off the equivalent of 39g of CO2, whereas for fossil fuels that figure is 75.1g.The Problem with Biofuels
How much CO2 is released by biofuels?
From the stoichiometric combustion reac- tion with air, the emission rates of CO2 are: 282.45 g of CO2 by 100 g biodiesel, Eq. (4). Taking into account the fuel density, the following is obtained: 282.45 ton CO2 per 113.88 m3 of biodiesel, i.e., 2.48 ton CO2 per m3 soybean oil methyl esters (biodiesel).Are biofuels worse than fossil fuels?
The fact is that in some cases biofuels are much worse than fossil fuels as they are removing massive CO2 sinks and create extra CO2 in the process. You do not to use food products, you can use crop residues like Abengoa who use wheat straw to make bio ethanol.How do biofuels differ from fossil fuels?
Differences between Biofuel and Fossil FuelBiofuels are renewable, whereas fossil fuels are nonrenewable. Biofuels are mostly grown from modern grains or the organic residues of modern plants, whereas the organisms that fossil fuels are made from have been dead for millions of years.