List of Bidding Zone borders and/or their subsets and their corresponding day-ahead firmness deadlines List of Bidding Zone borders and/or their subsets of interconnectors Day-ahead firmness List of responsible TSOs deadline Austria (AT) Czechia (CZ) <> D-1 10:00 APG CEPS Austria (AT) Hungary (HU) <> D-1 10:00 APG MAVIR Austria (AT) Italy (NORD) <> D-1 11:00 APG TERNA Austria (AT) Slovenia (SI) <> D-1 11:00 APG ELES Belgium (BE) France (FR) <> D-1 11:00 ELIA RTE Belgium (BE) Netherlands (NL) <> D-1 11:00 ELIA TenneT TSO B.V. Belgium (BE) Great Britain (GB) <> D-1 11:00 ELIA, Nemo Link NGESO, Nemo Link Croatia (HR) Hungary (HU) <> D-1 10:00 HOPS MAVIR Croatia (HR) Slovenia (SI) <> D-1 11:00 HOPS ELES Czechia (CZ) Germany (DE) <> D-1 10:00 CEPS 50Hertz Czechia (CZ) Germany (DE) <> D-1 10:00 CEPS TenneT TSO GmbH Czechia (CZ) Poland (PL) <> D-1 10:00 CEPS PSE Denmark (DK1) Denmark (DK2) <> D-1 11:00 Energinet Energinet Denmark (DK1) Germany (DE) <> D-1 11:00 Energinet TenneT TSO GmbH Denmark (DK2) Germany (DE) <> D-1 11:00 Energinet 50Hertz France (FR) Germany (DE) <> D-1 11:00 RTE Amprion, Transnet BW 1 | P a g e List of Bidding Zone borders and/or their subsets of interconnectors Day-ahead firmness List of responsible TSOs deadline France (FR) Italy (NORD) <> D-1 11:00 RTE TERNA France (FR) Spain (ES) <> D-1 11:00 RTE REE Germany (DE) Amprion, Netherlands (NL) <> D-1 11:00 TenneT TSO GmbH TenneT TSO B.V. Greece (GR) Italy (SUD) <> D-1 11:00 IPTO TERNA Hungary (HU) Slovakia (SK) <> D-1 10:00 MAVIR SEPS Slovenia (SI) Italy (NORD) <> D-1 11:00 ELES TERNA Poland (PL) Slovakia (SK) <> D-1 10:00 PSE SEPS Poland (PL) Germany (DE) <> D-1 10:30 PSE 50Hertz Croatia (HR) Serbia (RS) <> D-1 09:45 HOPS EMS Austria (AT) Germany (DE) APG <> TenneT TSO GmbH, Transnet BW, D-1 11:00 AMPRION Bulgaria (BG) Serbia (RS) <> D-1 09:45 ESO EMS Bulgaria (BG) Romania (RO) <> D-1 10:00 ESO Transelectrica Bulgaria (BG) Greece (GR) <> D-1 11:00 ESO IPTO Czechia (CZ) Slovakia (SK) <> D-1 10:00 CEPS SEPS Hungary (HU) Romania (RO) <> D-1 10:00 MAVIR Transelectrica Spain (ES) Portugal (PT) <> D-1 11:00 REE REN Estonia (EE) Latvia (LV) <> D-1 11:00 Elering AST Denmark (DK1) Netherlands (NL) <> D-1 11:00 Energinet TenneT TSO B.V. Great Britain (GB) Netherlands (NL) NGESO, BritNed <> TenneT TSO B.V., D-1 11:00 Britned 2| P a g e List of Bidding Zone borders and/or their subsets of interconnectors Day-ahead firmness List of responsible TSOs deadline France (FR) Great Britain (GB) <> D-1 09:00 RTE, IFA1 NGIC, IFA1 France (FR) Great Britain (GB) <> D-1 09:00 RTE, IFA2 NGIC, IFA2 Belgium (BE) Germany (DE) <> D-1 11:00 ELIA Amprion 3| P a g e .