The article discusses the significant potential of pumped-hydro energy storage (PHES) in addressing Europe's winter energy challenges. Contrary to misconceptions, PHES offers a sustainable and affordable solution for long-duration energy storage. With Europe relying on solar energy from the south and wind energy from the north during winter, the need for large-scale energy storage is paramount. PHES, with its off-the-shelf technology, low environmental impact, and minimal land and water requirements, emerges as a viable option. The article highlights that PHES, not only in premium sites but also in lower-quality sites, exceeds the storage capacity required for Europe's full electrification. It emphasizes that PHES does not necessitate new dams on rivers and showcases the small land and water footprint, making it a favorable choice for energy storage. Furthermore, the article discusses the economic viability of PHES, noting its lower capital costs compared to batteries and its potential for local economic development. Additionally, the environmental impact of PHES is minimal due to its long lifespan, lack of electrochemicals, and availability of off-river sites, ensuring sustainability. The article also touches on the benefits of hybrid systems combining PHES and batteries for cost-effective energy storage solutions. Overall, the article advocates for the recognition and utilization of PHES as a crucial component in Europe's journey towards decarbonization.