In recent years global environmental problems become aggravated, and various energy-saving function and method have been introduced in vending machine. However, it is reported that useless energy is consumed because the amount of power consumption changes greatly by the installation environment in actual operation. We also developed a tool which is called Best Available Allocation Supporting tool. By using this tool, we plan to propose people who operate vending machines to save vending machines energy consumption without dropping off sales. We planned advancement of the tool, especially investigated the influence of the sunshine and exhaust heat from machines to energy consumption.