A LEGACY OF RENEWABLE ENERGY USING MINING AREAS AS AN ENERGY HUB: CASE STUDY “LA JAGUA MINE” (COLOMBIA)

Abstract

It is widely acknowledged that variable renewable energy sources (VRES), such as solar and wind, are not dispatchable sources that can offer the global energy system the affordability, stability, and reliability that is currently required. The variable nature of solar and wind energy sources presents a significant challenge to the global energy system in achieving its net-zero emissions reduction goals for CO2. A variety of technologies have been developed with the objective of addressing this issue by storing energy for when solar irradiance and wind speeds are insufficient to supply the need. Pumped hydro energy storage (PHES) is regarded as one of the most cost-effective and environmentally benign forms of energy storage. This research investigates the potential for a second life for mining areas enabled by renewable energy generation in conjunction with PHES technology. It considers the potential for PHES to provide a positive legacy for regions hosting intensive mining operations as compensation through the provision of affordable electricity. The feasibility of utilizing renewable energy in brownfield and greenfield sites was evaluated, identifying a significant prospect for sustainable development in mining regions. However, the creation of regulatory frameworks, development strategies and rules are necessary to fully leverage this energy potential. Furthermore, there is a dearth of knowledge and consensus among stakeholders regarding the repurposing of mines with hydro energy storage technology.