The upcoming smart grid paradigm brings a new approach for distribution grid management, regarding new technical features for DSO and new energy services to be provided to final customers. On the one hand these technical features and energy services become possible a more efficient management of distribution grid aiming at a reduction of grid investment and operational cost, not only in investment but also in operation and management. On the other hand these new services for clients may become possible an increase on energy efficiency and energy cost reduction for clients, with direct impact in environmental goals worldwide. This paper describes a use case developed under SENSIBLE Project to be implemented in the Portuguese Demonstrator-Évora, where low voltage (LV) clients provide flexibility through the usage of energy storage and energy management technologies, both in regulated and market environment, optimizing customers’ energy consumption and minimizing its cost, and, simultaneously, providing grid services when grid technical constraints occur with indirect impact in grid investment costs.