Bee pollen, commonly known as pollen, is a product of exceptionally nutritrional and economic value. It has natural origin because harvested entirely by hand from beekeeping farms. Researching post-harvest techniques to process raw pollen into commerical products that meet requirements for moisture limits and vitamin C content is an urgent need. This study involves developing a pilot-scale vacuum drying equipment (5 kg/batch capacity) and investigating drying operational conditions using the response surface method. Based on the regression equations for vitamin C content and electricity consumption with respect to temperature and material thickness, optimized set drying parameters have been established that can be used for production scale in terms of energy savings and sustainability.