TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Device: The fuel-powered device is a boiler, a turbine, an internal combustion engine, or a thermal oxidizer. The fuel-powered device is a turbine used for power generation.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Bio-fuel: The bio-fuel (F1) comprises 75-90 wt. oxygenated hydrocarbons; 10-25 wt.% nonoxygenated hydrocarbons; 2-10 wt.% water; and not greater than 500 ppmw of solids, where the ignition temperature is 210-265 degrees C and the higher heating value is 10500-13500 btu/lb. The liquid bio-fuel (F1) has been produced via pyrolysis of biomass or biomass particles, where the pyrolysis is fast pyrolysis, and the biomass or biomass particles comprises lignocellulosic biomass or lignocellulose. Preferred Components: The petroleum derived fuel is heating oil. The biomass-derived fuel is bio-oil. Preferred Method: In the method, the heating values, specific gravities, ignition temperatures, and/or flash points of the biomass-derived fuel and petroleum-derived fuel are within 20% of one another. The heating values of the biomass-derived fuel and petroleum-derived fuel are within 15% of one another, where the heating values of the biomass-derived fuel and the petroleum-derived fuel are both in 9000-15500 btu/lb. The specific gravities of the biomass-derived fuel and the petroleum-derived fuel are within 15% of one another, where the specific gravities of the biomass-derived fuel and the petroleum-derived fuel are both of 0.75-1.1 g/ml. The ignition temperatures of the biomass-derived fuel and the petroleum-derived fuel are within 15% of one another, where the ignition temperatures of the biomass-derived fuel and the petroleum-derived fuel are both of 150-350 degrees C. The flash points of the biomass-derived fuel and the petroleum-derived fuel are within 15% of one another, where the flash points of the biomass-derived fuel and the petroleum-derived fuel are both of 40-120 degrees C. The heating values, specific gravities, ignition temperatures, and flash points of the biomass-derived fuel and the petroleum-derived fuel are within 10% of one another. The total solids content of both the biomass-derived fuel and the petroleum-derived fuel is not greater than 2500 ppmw and the hard solids content of both the biomass-derived fuel and the petroleum-derived fuel is not greater than 1000 ppmw. EXAMPLE - No suitable example is given.