Responsibility for aFRR dimensioning. Each quarter of a year, all Nordic TSOs are responsible for determining the hours for which aFRR shall be dimensioned; The TSOs also agree about total Nordic volumes for each dimensioned hour. The distribution between TSOs is decided by unanimous agreement between TSOs (appendix 1). Each TSO is responsible for the physical availability of aFRR per LFC area. SOGL157(3) SOGL157(3)
