Abstract: Disclosed herein is an alternative emulsified fuel. The emulsified fuel is formed by forming a mixture of 70˜80 wt % bunker-C oil and 20˜30 wt % carbide aqueous solution, followed by heating and stirring the mixture, applying ultrasonic waves of 20 kHz˜1 MHz to the mixture for 20˜30 minutes to induce ionic bonding between molecules in the mixture, and rotating the mixture at a high speed in an emulsifying machine to prevent oil-water separation of the mixture. 0.5˜2 parts by weight of calcium chloride is added as an emulsification agent to 100 parts by weight of the mixture of the bunker-C oil and carbide aqueous solution. The carbide aqueous solution contains 0.1˜1 wt % of carbide dissolved in water. The alternative emulsified fuel is useful for winter heating for horticulture or flowering plants, for drying agricultural and fisheries products, and other applications.