Ongoing projects in eSett

15 min Imbalance Settlement Period

The Nordic Transmission System Operators have transitioned from a one-hour to a 15-minute imbalance settlement period (ISP), with the change implemented in several phases.

The 15-minute ISP went live in eSett on 22 May 2023. Since then, 15-minute imbalance pricing and cross-border intraday trading have been in use from 18 March 2025, followed by the start of 15-minute cross-border day-ahead trading on 30 September 2025.

To support the transition, eSett will continue to provide hourly-level data packages until around March 2026. More details will be shared closer to that date.

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Balancing Service Provider (BSP) Model and Independent Aggregator

The Nordic Imbalance Settlement model is undergoing changes with the introduction of a new role called the Balancing Service Provider (BSP), responsible for providing balancing energy or capacity to the Transmission System Operator (TSO). This transition involves splitting the current responsibilities of the Balance Responsible Parties (BRPs) into two roles: BRP for imbalances and BSP for balancing energy and capacity, where Independent Aggregator will be participating. This change is designed to make the electricity market more efficient and competitive, support the integration of renewable energy, and improve overall grid reliability.

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Cash Account Model

eSett is renewing the settlement account model based on customer feedback. The project involves separating the collateral and invoicing accounts into two distinct accounts. This provides greater flexibility and options for customers for managing cash and collateral.

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Changes in Data Flow Contents

eSett will gradually introduce several updates to data flows during 2024 and 2025. Although these changes may seem small, it is important to understand them and assess how they might affect your systems. Over time, these updates will impact how data is exchanged between market participants and eSett in both directions.

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