Battery for Reliability of Supply

To avoid blackouts or to enable a black start it is useful for the power grid that parts of it can be disconnected, so-called “islanding”. A battery makes this possible because it can both store energy so that the generation can meet the demand and offer the services which the system needs to run separately from the rest of the power grid. These batteries can, for instance, be used in microgrids (see microgrid solution).

Components & enablers

  • A battery system based on NaNiCl2 batteries, provided with an optimum, smart grid control system and able to cope with the challenge of supporting multiple tasks.

State of the art in application and research

In TILOS, the battery system proposed supports both stand-alone and grid-connected operation, while proving its interoperability with the rest of micro grid components. Different operation strategies are investigated to define the optimum system integration.

In OSMOSE, a storage operator plans to install batteries to provide balancing services. By locating their solution in a network-constrained area, they could simultaneously contribute to the management of congestion and thereby reduce the cost to society.

A CROSSBOW Hybrid RES Dispatchable Unit (RES-DU) integrates non-dispatchable and dispatchable RES along with energy storage units under an advanced control system, leading to a more secure, stable and cleaner electricity supply. In addition, CROSSBOW proposes a Regional Storage Coordination Centre to provide real-time supervision and control, incident management, seamless interaction with system operators and the optimisation of installations. Furthermore, the CROSSBOW Virtual Storage Plant is a platform capable of integrating the characteristics and limitations of distributed individual storage units while maximising their performance and reducing the additional costs.

In EASY-RES, Fast Storage Systems (FSS) are placed and controlled at the DC bus of each converter-interfaced Distributed RES, enabling the provision of adaptable and controllable inertia independent of the Distributed RES operating status. This enables the real-time values of inertia to be adjustable according to the optimisation criteria set following bilateral communication and agreement between the TSO and DSO.

FlexCoop optimises self-consumption by leveraging cost-effective storage solutions.

In MUSE GRIDS, the battery is added to test the combination of centralised and decentralised flexibility and the effective communication and order of operation in the event of a blackout.

NAIADES’s mission in this project is to develop a battery technology for sustainable EES that would result in a radical decrease in cost while ensuring sustainability and performance in terms of safety, cycle life and energy density.

The project NETfficient demonstrates and deploys local storage technologies in a real electrical grid on Borkum Island and develops ICT tools to exploit the synergies between them, the smart grid and the citizens.

During the SMILE Madeira pilot, one of the aims is, therefore, to evaluate how BESS can be integrated in Madeira island. In addition, in the Samsø pilot, the energy demand in the marina is very inconsistent as it is dominated by the demand from berthed yachts and associated tour-ism. This results in significant fluctuations of demand on a daily basis. To solve this, the project will seek to implement an integrated energy system at the marina comprising renewable generation (PV and wind) linked to storage (battery and thermal).

In STORENET, the International Energy Research Center is working with Electric Ireland to test solar panels and battery storage units in Ballyfer-riter.

STORY wants to demonstrate and evaluate innovative approaches for energy storage systems. The challenge is to find solutions, which are affordable, secure and ensure an increased percentage of self-supply. The project consists of eight different demonstration cases each with different local / small-scale storage concepts and technologies, covering industrial and residential environments.

The advantage of the battery used in the Battery storage project at the Prottes windpark lies in its capabilities in the millisecond range, making it possible to stabilise network frequency and offset voltage fluctuations.

In WindNODE, the technical integration of the charging infrastructure of battery-powered utility vehicles is demonstrated first in the city of Berlin, and subsequently in the project at up to ten other locations.

Also in the scope of this project, BVG Systems is developing grid-compatible and system-conductive charging of EV fleets and testing them in practice.

The WiseGRID project gives real, proven solutions for microgrids–smart grids as active balancing assets with RES and batteries.

The Suvilahti district of the Helsinki electricity storage facility is best for compensating for brief peaks and dips in output which need rapid reaction. In addition, the electricity storage facility is a multipurpose tool for the smart grid of the future.

Technology Readiness Level

TRL 5 – Development:

TILOS has tested a stand-alone operation, but results from this demo were not found. EMPOWER applied batteries in their microgrid but did not specifically research battery technology.

Current focus of R&D and research gaps



[1] TILOS [Link]

[2] EMPOWER - Hvaler [Link]

[3] OSMOSE, WP7 [Link]

[4] CROSSBOW [Link]

[5] EASY-RES [Link]

[7] MUSE GRIDS [Link]

[8] NAIADES [Link]

[9] NETfficient [Link]

[10] RealValue [Link]

[11] SMILE [Link]

[12] StoreITup-IF [Link]

[13] STORENET [Link]

[14] STORY [Link]

[15] Battery storage project at the Prottes [Link]

[16] UPGRID [Link]

[17] VINPOWER [Link]

[18] WindNODE [Link]

[19] WiseGRID [Link]

[20] Storage in the Canary Islands (REE) [Link]

[21] Suvilahti BES (Finland) [Link]