The United States currently relies heavily on coal, oil, and natural gas for its energy. Fossil fuels are nonrenewable, that is, they draw on finite resources that will eventually dwindle, becoming too expensive or too environmentally damaging to retrieve. In contrast, renewable energy resources are constantly replenished and will never run out. Here's a green energy infograph!
Bunker: MGO (Marine gas oil), equivalent n.2 fuel oil, made from distillate. MDO (Marine diesel oil), blend of heavy gasoil that contain small amounts of refinery feed stocks, with low viscosity, IFO(Intermediate fuel oil): blend of gasoil & heavy fuel oil, with less gasoil than marine diesel. MFO(Marine fuel oil), same as HFO. HFO (Heavy fuel oil), Pure residual oil, equivalent to N.6 fuel oil.Marine diesel oil contains some heavy fuel oil.
Union Pacific gas turbine electric locomotive. Designed to replace steam locomotives on a 1:1 basis, (1st generation diesesls were on 4:1 basis) the GTELs were the most powerful locomotives ever built: rated at 8,500 HP burning Bunker C fuel oil