Vibrant energy is usually in demand for those who want the extra Divination experience from converting memories with energy. It is also in demand for creating Divine box traps. 60 Divination is required to harvest vibrant energy, but having level 75 gives the best chances of harvesting enriched vibrant memories and gives 3 energy per harvest. Remember that every 20 minutes starting on the hour, an enriched wisp will spawn. Harvest it for a guaranteed supply of enriched memories. Enriched memories can be converted to twice the energy that normal memories can.