A power generation system, which includes a source of a seed oil, a source of alcohol, and a reactor in communication with the source of seed oil and the source of alcohol. The reactor produces a biofuel product. The system has a power source that operates on a biofuel energy source to produce heated exhaust and is in communication with the reactor to utilize a portion of the biofuel product as its biofuel energy source. The system has a heat transfer mechanism that transfers heat from the exhaust manifold to the reactor. The power source also converts mechanical power into electrical power. Also disclosed is a system that involves extraction of oil from an oilseed product. A method of extracting oil from an oilseed product, a method of making a transesterified seed oil, and a method of making a biofuel are also disclosed, as are products obtained thereby.