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6 FAQs about [Grid requirements for energy storage systems]
What are the requirements for a grid energy storage system?
The grid energy storage system must be equipped with a bus interface (input port), so that the production mode of active power can be changed (production/demand) and a setpoint can be given thereto. The bus interface must be compatible with the IEC 60870-6 (Elcom, ICCP/TASE.2), IEC 60870-5-104 or IEC 61850 protocols.
What are the grid code specifications for grid energy storage systems?
The Grid Code Specifications for Grid Energy Storage Systems are determined according to Table 3.1, and as a rule, they are not dependent on the rated capacities or specifications of other production or demand systems connected to the same connection point.
When does a grid energy storage system connection need a study?
If the technical execution of a grid energy storage system connection requires specific studies, the grid energy storage system owner shall conduct the studies in co-operation with Fingrid and the relevant network operator no later than during the planning stage of the grid energy storage system grid connection.
Does Fingrid have specific study requirements for grid energy storage systems?
On 21 June 2023, Fingrid has published Specific Study Requirements (SJV2019 / chapter 5), "Specific Study Requirements for Grid Energy Storage Systems" (see Attachments section), which apply to certain type D grid energy storage systems.
What data is required for a Type C grid energy storage system?
For type C grid energy storage systems, the data specified in tables 7.2 and 7.3 must be delivered. The grid energy storage system owner shall submit this grid energy storage system data to the relevant network operator as electronic documents after the commissioning testing.
When should a grid energy storage system owner inform Fingrid?
The grid energy storage system owner shall inform Fingrid and the relevant network operator of the contact information of the operator responsible for the operation of the grid energy storage system, no later than when the grid energy storage system begins to supply active power to Finland’s power system.