The transition from a fossil to a renewable energy-based system increases future demand for mineral resources. Meeting the demand depends on resource availability. Respective estimates are common for primary resources to gain investments and develop public policies, but have not been implemented for secondary resources. The aim of the talk is to present a methodology to assess and communicate the future availability of secondary resources. The methodology integrates the United Nations Framework Classification for Resources (UNFC). Its’ application reveals the future recovery potential based on the maturity level of recovery projects and shows all contingencies that affect the recovery operation. This standardized approach makes estimates on the future availability consistent with reserve estimates and facilitates the raw material sector in meeting the future demand.