Energy Resource | Weight Grade (MJ/Kg) | Volume Grade (MJ/M3) | Area Grade (MJ/Hectare) | State Grade |
Oil | 44 | 35,000 | 25 - 2,500 Million | Liquid |
Natural Gas | 53 | 35 at std 6,000 at 20.7 MPa | 25 - 2,500 Million | Gas |
Coal | 18 29 | 23,000 - 35,000 | 25 - 2,500 Million | Solid |
Oil Shale | up to 4.4 | 7,000 | 25 - 2,500 Million | Solid |
Uranium | N/A, field | N/A, field | Trillions | Field |
Wood | 18 dry | 9,000 | 1 - 12 Million | Solid |
Ethanol | 25.5 | 20,000 | Made from grain | Liquid |
Methanol | 19 | 15,000 | Made from Natural gas | Liquid |
Hydrogen | 141 | 12 at std, 4,000 when super cooled | Made from natural gas, oil, coal or electricity | Gas, Liquid (at super cool temperatures) |
Solar Energy | N/A, field | N/A, field | 2,500 25,000 every hour | Field |
Grain | 15.5 dry | 7,000 | 7,500 100,000 every year | Solid |
Wild Game | 15.5 | 12,500 | up to 750 every year | Solid |
Wild Berries/Nuts | up to 15.5 | 350 - 14,000 | up to 7,500 every year | Solid |