Main Page | See live article | Alphabetical index Energy balance is the difference between the energy produced by a 1 kg of the fuel (i.e. biodiesel, petroleum, uranium ) and the energy necessary to produce it ( extraction (e.g. drilling or cultivation of energetic plants), transportation, refining etc). This article is a stub. You can help Wikipedia by fixing it. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.