EDP Distribuição installed, at the end of 2015, the first medium-voltage grid-connected electrical energy storage solution, using stationary lithium-ion batteries, with a power of 472 kW and a storage capacity of 360 kWh.
As part of the contribution of energy storage to the innovation and energy efficiency strategy, a considerable effort was made to test and implement functionalities, with a view to adapting them for use in several case studies to support the management of distribution networks, both in stand-alone operation and integrated into a broader control perspective, including, for example, the differential inclusion in the H2020 SENSIBLE project or more recently in the H2020 InteGrid project.
During 2016, immediately after installing the system and testing the project's original functionalities, a phase of development and analysis of new cases of use and improvement and testing of the system's intelligence methods began, with a special focus on operating safety and control automatisms.
Already in 2018, a solution for monitoring the performance of the system was implemented, which will allow detailed conclusions to be drawn about the functioning of the storage system, with a view to a more detailed technical-economic analysis of the use of storage to support the management of distribution networks.
This initiative will make a decisive contribution to the collection of essential data for the evaluation of business models for the exploitation of these technologies, especially at a time when the technical effort to validate storage solutions is already consolidated, with clear evidence of their potential.
This pilot project thus makes an important contribution to the new paradigm of intelligent networks, with EDP Distribuição already recognised as a pioneer with the Inovgrid project.
The current context of electricity grids, marked by demanding challenges, such as the liberalization of the market, the increasing penetration of distributed generation, the emergence of the self-consumption regime, the advent of electric mobility, the flexibility in demand and the increasingly active role of grid customers, reinforces the need for the adoption of innovative strategies and disruptive technologies in the management of the distribution grid.