EU-SysFlex blog: How a battery energy storage system can provide services to the market

09.12.2019News

An industrial sized battery energy storage system (BESS) located in an urban district in Helsinki has provided a research platform for Helen, an energy company in Finland, since summer 2016.

An industrial sized battery energy storage system (BESS) located in an urban district in Helsinki has provided a research platform for Helen, an energy company in Finland, since summer 2016. The BESS, rated 1.2 MVA / 600 kWh, was the largest battery energy storage system in Nordic countries at the time of its installation. The BESS is owned by Helen and it is connected to a 10 kV medium voltage network of the local distribution system operator (DSO), Helen Electricity Network. The battery has provided a research platform for several projects including EU-SysFlex.

The purpose of purchasing the battery was to demonstrate the multi-functionality of the battery and its technical capability to provide services to several stakeholders. Helen as an energy company and aggregator pursues the BESS for the smart grid integration, ancillary markets and development of customer services. For the Finnish transmission system operator (TSO) Fingrid, the battery can provide power system frequency control. A local DSO can utilize the services of the battery for the control of reactive power and voltage, demand response and peak shaving functionality….read more