3 ms·

Does it still take 1l of (subsidized) fossil fuel to produce 1l of biofuel?

• Dylan16807 5y ago
  > One of the most often cited results from Sheehan et al. is that the fossil energy ratio of biodiesel is equal to 3.2. In other words, biodiesel yields 3.2 units of energy for every unit of fossil energy consumed over its life- cycle. > Recently, a 5.54 fossil energy ratio (FER) was reported [1] which means one unit of fossil energy input is required to produce 5.54 units of biodiesel energy output. This FER shows a stunning energy return of biodiesel that surpasses other fuels [2]. Seems fine. And that's probably without even trying to use all electric equipment.