According to ACER's Decision No 10/2025 of 16 December 2025, on the amendment to the determination of capacity calculation regions, the South-East Europe (SEE) CCR has been expanded to include 11 additional bidding zone borders. Furthermore, three new capacity calculation regions have been defined: East-Central Europe (ECE CCR), Italy-Montenegro (ITME CCR), and Eastern Europe (EE CCR).