Baltic States transmission system operators shall implement multiple essential changes in the Baltic power system, which will affect the cross-border capacity available for electricity trade, are as follows:

• Planned disconnection from the BRELL power system followed by synchronisation with the Continental Europe synchronous area in February 2025;
• Planned reconstructions of interconnection power lines;
• Introduction of the Baltic balancing capacity market in February 2025.

Baltic States transmission system operators (TSOs) have jointly estimated the initial indicative cross-border capacities for 2025 to prepare the electricity market for changes listed above. 
These capacities are estimates based on initial outage plans and static stability limits. Calculated capacities will be re-calculated for the market periods to take into account the final agreed outage plans and the state of system operation to assess static and dynamic stability limits.

Estimated capacities and the process has been jointly described in the document below:

Forecasted Cross-Border Capacities in the Baltic Electricity Market in 2025