The increasing effects of climate change have resulted in a global agreement on the urgent need for decarbonizationDecarbonization, with governments establishing ambitious emissionsEmissions reduction targets, such as those set in the 2016 Paris Agreement. The main activities in the miningMining sector that contribute to greenhouse gas emissionsEmissions are loading and transportation. Minerals are typically transported on large trucks with diesel engines. In order to meet the urgent need to reduce CO2 emissionsEmissions in the miningMining industry, this study examines diesel fuel substitutes for use in miningMining vehicles. The research analyzed the feasibility of using electricity, renewable diesel, and liquefied natural gas (LNG) as alternatives to diesel fuel. We used discrete event simulation to compare these energy alternatives across various parameters and scenarios. The analysisAnalysis was performed on data from an open pit mining operationMining operations over a 24-h period. Our results showed that short-term production levels remained largely unaffected by the type of energy used. However, the electric truck scenario required 13 additional trucks to match the production levels of diesel fuels due to the smaller size of electric trucks. LNG trucks demonstrated a significant increase in fuel consumption (+50%) compared to diesel trucks, leading to higher operational costs (+46%). In terms of emissionsEmissions, electric trucks achieved a 95% reduction in CO2 emissionsEmissions, while renewable diesel trucks reduced emissionsEmissions by 90%. On the other hand, an increase in fuel consumption by LNG trucks compared to diesel trucks resulted in a 30% increase in CO2 emissionsEmissions. In addition, simulations with LNG and electric trucks resulted in longer cycle times and queue lengths. The results showed that the assumptions used in this analysisAnalysis have a major impact on the outcomes, indicating the need for further research as the industry continues to investigate and implement these technologiesTechnology.