This study aims to analyse the integration of solar photovoltaic and electric vehicle in farm mechanisation operation for the sustainable development of the oil palm plantation industry in Malaysia. Multiple integration methods have been simulated, and the primary considerations comprise energy costs, capital expenditure, net present costs, and percentage of renewable energy contribution. The simulation results revealed that the on-board solar photovoltaic system is the best-suited method compared to other setups. The actual field test on the selected system was carried out to further validate the simulation study. The results produced a roughly similar percentage of solar energy contribution, which is in the range of 20-30%. In addition, a study was also conducted on the effects of extra weight being added to the vehicle. The results of this revealed that only less than 10 NW of additional power was required for the electric vehicle to move at constant velocity with the addition of 43 kg of solar panels and its frame. The operational costs of various practices, which include a knapsack sprayer, an internal combustion engine vehicle, and the selected system, were compared for the herbicide spraying. It was found that the selected system could provide the lowest operational costs per area and could avoid 8 kg of carbon dioxide equivalent per hectare per year from the total diesel fuel consumption. Finally, it was concluded that the integration of solar photovoltaic and electric vehicles could provide numerous advantages for the people, the planet, as well as the profit. (C) 2016 Elsevier Ltd. All rights reserved.