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Energy Storage Grid Specifications

Grid code specifications for grid energy storage systems

This document contains the Grid Code Specifications for Grid Energy Storage Systems (hereinafter referred to as "Specifications") required by Fingrid Oyj (hereinafter referred to as

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Energy Storage Grid Specifications [PDF]

6 FAQs about [Energy Storage Grid Specifications]

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.

What is a grid energy storage system?

Grid energy storage system: A unit or an economic ensemble of units capable of storing electricity, which is connected to the network through power electronics, and which also has a single connection point to a transmission system, distribution system, closed distribution system, HVDC system or a real property’s electricity network.

What if a grid energy storage system requires specific measures?

If the specific studies indicate that the connection of the grid energy storage system requires specific measures in order to ensure the technical feasibility of the grid energy storage system, the measures are treated as equivalent to the Specifications, and the grid energy storage system owner is responsible for their execution.

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 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.

How long can a grid energy storage system run?

Upon receiving an interim operational notification (ION), the grid energy storage system owner shall have the right to operate the grid energy storage system and supply power to the connection point for no more than 18 months.

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