The power grid in North America, which is already complex, is seeing demand rise for low-cost and emissions-free electricity. In this episode of Sustainability Leaders, Stephen Uwazota, Director of Sustainable Finance and Clean Energy at BMO, discusses ways in which long-term energy storage solutions can help improve grid resilience. His guest on the show, Curtis VanWalleghem, CEO of Hydrostor, has an innovative and cost-effective approach to the solution--advanced compressed air energy storage. All it takes is air, rocks, and water.