Owing to its high capacity, attractive operating voltage, natural abundance, and environmental friendliness, silicon (Si) is a promising anode active material (AAM) for next generation Li-ion batteries (LIBs). However, the Si particle volume expansion during battery operation and low conductivity hindered its commercialization. Despite the Si availability, most Si-based AAMs are prepared as nanostructured particles, which limits their scalability. Interestingly, solar-grade Si presents in end-of-life (EoL) photovoltaic (PV) solar cells can be seen as a cheap resource of Si. Especially, the exponential growth of the PV solar market driven by the worldwide clean energy demand will lead to a significant rise of waste generated by EoL PV panels disposal, as the early installed modules reach the end of their lifespan. In this context, addressing this impending issue by a promoting resource recovery (Al, Ag, Cu and Si) is a great opportunity to ensure economic benefits and outweigh the ecological impacts of the panel disposal. By developing Si/C composites as AAMs for LIBs, we provide a viable solution to valorize the Si derived from the EoL solar panels as battery raw material. Our strategy is based on the design of Si/C composites with a controlled morphology using a pilot-scale spray drying technique. The Si/C electrodes exhibit promising electrochemical performance with capacities around 1200 mAh/g (capacity limited at 1200 mAh/g) with a capacity retention of 99% after 1000 cycles.