Applications of energy storage technologies, particularly Battery Energy Storage Systems (BESS), are receiving considerable attention in the power industry. Key drivers behind this growing interest include steadily decreasing technology prices, technology maturity, need to integrate increasing amounts of Photovoltaic (PV) and wind Distributed Generation (DG) and regulatory mandates to adopt the technology, e.g., California's AB 2514. In this regard, energy storage is starting to undergo a similar growth as that experienced by PV DG in the last decade. The successful development of business cases, deployment and integration of energy storage in power delivery systems require a holistic approach that considers: existing and projected technology costs; use case definition and selection; locational dependence and applications (centralized, distributed, behind-the-meter); stacked planning, operations, market and societal benefits; availability of required engineering standards; and limitations in computational models and tools to conduct technical and financial evaluations and regulatory constraints regarding energy storage ownership, etc. The industry is actively working on addressing these aspects, however, there is plenty of work that still needs to be done to bridge gaps in these areas. This panel will present real-life experiences of leading utilities that are actively working on deploying energy storage technologies in power delivery systems. The panel will discuss challenges and lessons learned, as well as recommendations regarding solutions to enable the adoption of this technology.