ACER report to the Energy Union Task Force on recommendations to mitigate future periods of price spikes in Southeast Europe, by increasing cross-zonal capacity and system flexibility in the region.

Data items

Name Reference Source Identifier
Active network elements in Core flow-based market coupling during the evening peaks – July to September 2024 Figure 09 ACER calculation based on JAO Publication Tool data
Actual activation of curative remedial actions in Core capacity calculation per Core TSO – 2023 to 2025 Figure 28 ACER calculation based on JAO Publication Tool
Adoption of time-varying retail contracts among households across the EU and Norway – 2024 (% of total household consumers) Figure 33 ACER calculation based on NRA data
Average allowable temporary increase of Fmax and number of CNEs affected by curative remedial actions per Core TSO – 2025 (% over permanent thermal limit) Figure 29 ACER calculation based on JAO Publication Tool
Average day-ahead prices in selected bidding zones in Central and Southeast Europe at 19:00 CEST – July to September 2024 (EUR/MWh) Figure 01 ACER calculation based on ENTSO-E Transparency Platform data
Average hourly day-ahead price and solar generation for Member States in Southeast Europe during summer months – July to September 2020 to 2025 Figure 05 ACER calculation based on ENTSO-E Transparency Platform data
Average hourly day-ahead price in a selection of bidding zones in Central and Southeast Europe – July to September 2024 (EUR/MWh) Figure 02 ACER calculation based on ENTSO-E Transparency Platform data
Average level of implementation of the 70% requirement in the Core CCR per Member State, considering flows induced by third-country exchanges – 2022 to 2024 Figure 22 ACER calculation based on TSO data
Average load and generation pattern in Hungary during summer months of 2024 – July to September 2024 Figure 08 ACER calculation based on ENTSO-E Transparency Platform data
Average price spreads in the single day-ahead coupling during peak hours of the summer months of 2024 - July to September 2024 at 19:00 and 20:00 CEST Figure 11 ACER calculation based on ENTSO-E Transparency Platform
Comparison of average daily load profile in Southeast Europe during the summer months of 2023, 2024 and 2025 Figure 07 ACER calculation based on ENTSO-E Transparency Platform data
Count of instances of day-ahead prices above 400 EUR/MWh in select EU bidding zones, compared with the counterfactual analysis – July to September 2024 Figure 24 ACER calculation based on Simulation Facility
Evolution of installed capacity of selected technologies in Southeast Europe – 2020 to 2025 (GW) Figure 04 ACER calculation based on ENTSO-E Transparency Platform data
Impact of ATC extraction from flow-based domains in the Nordic CCR, compared to ATC leftovers prior to the implementation of flow-based market coupling in day-ahead – 2023 to 2024 Figure 37 ACER calculation based on ENTSO-E Transparency Platform data
Minimum requirements for cross-zonal trade in the Core CCR per Member State – 2024 Figure 23 ACER calculation based on TSO data
Overview of available non-costly remedial actions in Core capacity calculation per Core TSO based on Core Static Grid Model Figure 27 ACER calculation based on Core Static Grid Model
Smart meter roll-out across Southeast Europe – 2024 (% of household and non-household consumers) Figure 35 ACER calculation based on NRA data
Two-week rolling average of the maximum possible bilateral exchange and price spread on the Austria-Hungary bidding zone border at 19:00 – 2024 Figure 10 ACER calculation based on JAO Publication Tool and ENSTO-E TP data
Unavailability of cross-border lines reducing cross-border capacity in the bidding zone border between Austria and Hungary during the summer of 2024 – July to September 2024 Figure 32 ACER elaboration based on ENTSO-E Transparency Platform
Uptake of time-of-use network tariffs for the transmission and distribution networks across the EU and Norway in 2024 Figure 34 ACER calculation based on NRA data
Year-on-year changes in electricity generation in Southeast Europe between the summer of 2023 and 2024, categorised by generation technology Figure 06 ACER calculation based on ENTSO-E Transparency Platform data
Yearly changes in installed capacity of selected technologies in Southeast Europe – 2020 to 2025 (GW) Figure 03 ACER calculation based on ENTSO-E Transparency Platform data