Table 1: Energy Content of Fuels.
+Ethanol or E85 can be up to 85% ethanol with the remainder being conventional gasoline. However, when pure ethanol leaves a plant it is denatured typically with a few percent gasoline. This usually yields an upper concentration of 83% as opposed to the more obvious limit of 85%. The concentration can be as low as 51% and anywhere in between. The lower concentrations are used to improve cold weather properties.
* The energy content varies by what is used to produce electricity. However, electricity is energy and not necessarily a fuel. Most of us purchase energy based on the kW-hr or kilowatt-hour. This is sometimes also shown as kWh. This is the measure of using energy at a rate of 1kJ per second over the time period of one hour. This is equal to 3,600 kJ of energy. There are 3,414 Btu/kw-hr of electricity.
So from the Table 1 above we can create Figures 1 and 2. Figure 1 compares the energy content of the fuels by mass, while Figure 2 compares the energy content by volume. Figure 1: Energy Content by Mass.Figure 2: Energy Content by Volume.
Table 2: GGE for Various Fuels.