ACER EU Energy Markets
Material regulatory developments from Agency for the Cooperation of Energy Regulators are tracked daily by Cresthaven Analytics. Over the last 90 days, 20 material briefs relevant to professionals operating in the energy, power & commodities sector have been published below. Each brief is sourced directly from the primary regulatory feed, summarized for institutional readers, and scored for materiality.
Recent material activity
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ACER amends cost-sharing methodology for electricity redispatching and countertrading in the Core capacity calculation region
ACER has adopted a Decision amending the electricity redispatching and countertrading cost-sharing methodology for the Core capacity calculation region. This Decision concludes the review process initiated in October 202…
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Continental European NRAs refer minimum FCR activation period dispute to ACER for binding decision
National regulatory authorities across Continental Europe have jointly referred to ACER a request for a binding decision on the minimum activation period that frequency containment reserve providers must maintain during …
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ACER amends day-ahead and long-term capacity calculation methodologies for the Core electricity capacity calculation region
ACER has adopted two decisions amending the day-ahead and long-term capacity calculation methodologies for the Core capacity calculation region. The decisions update the technical framework governing cross-border electri…
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ACER issues Opinion on ENTSO-E and ENTSOG draft TYNDP 2026 Scenarios Report calling for alignment with EU energy and climate targets
The Agency for the Cooperation of Energy Regulators has published an Opinion on the draft Ten-Year Network Development Plan 2026 Scenarios Report, prepared by the European transmission system operator bodies for electric…
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ACER releases inaugural Russian gas phase-out tracking report under the REPowerEU Gas Regulation
ACER published its first mandatory report on the phase-out of Russian gas imports into the EU on July 1, 2026, under the REPowerEU Gas Regulation. The report tracks remaining Russian gas contracts held by EU market parti…
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ACER amends the regional reserve capacity sizing methodology, binding all European TSOs operating under the capacity allocation and congestion management framework
On June 24, 2026, ACER amended the methodology for regional sizing of reserve capacity, following its review of ENTSO-E's proposal and stakeholder exchange. The amended methodology is binding on transmission system opera…
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ACER publishes monitoring report on EU gas market decarbonisation challenges and policy trade-offs
On June 23, 2026, ACER released a monitoring report on decarbonisation challenges, trade-offs, and policy dilemmas in the EU natural gas market. The report maps structural tensions in the transition away from fossil gas …
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European TSOs submit HAR and SAP revision proposal to ACER, triggering a public consultation
European transmission system operators submitted a joint proposal to ACER on or before June 12, 2026 to revise the Harmonised Allocation Rules and the requirements for the Single Allocation Platform. ACER will open a pub…
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ACER Gas Market Task Force releases final assessment of EU gas and gas derivatives markets under European Commission mandate
The Agency for the Cooperation of Energy Regulators published the Gas Market Task Force final assessment on June 2, 2026, concluding its European Commission-mandated scrutiny of EU gas and gas derivatives market function…
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ACER releases biennial gas congestion report assessing contractual congestion across EU gas markets for 2024 and 2025
ACER published its biennial gas congestion report on May 29, 2026, covering contractual congestion in EU gas transmission networks for 2024 and 2025. The report identifies lower congestion levels as indicative of a new m…
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ACER EU Energy Markets release pending Cresthaven Analytics full analysis: In summer 2024, Southeast Europe experienced a sustained period of electricity price spikes. ACER sets out recommendations to in
ACER EU Energy Markets published a regulatory release titled 'In summer 2024, Southeast Europe experienced a sustained period of electricity price spikes. ACER sets out recommendations to in'. Cresthaven Analytics' full …
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ACER EU Energy Markets release pending Cresthaven Analytics full analysis: ACER has launched the first edition of its electricity network tariff repository.
ACER EU Energy Markets published a regulatory release titled 'ACER has launched the first edition of its electricity network tariff repository.'. Cresthaven Analytics' full intelligence brief is pending re-analysis; see …
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ACER issues binding Opinion on EU DSO Entity draft statutes expanded to cover gas and hydrogen networks
ACER published its Opinion on May 17, 2026 assessing the EU DSO Entity's revised draft statutory documents, which have been updated to incorporate gas and hydrogen distribution system operators alongside electricity. The…
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ACER issues binding Decision amending the European Resource Adequacy Assessment methodology following ENTSO-E's November 2025 proposal
ACER published a Decision on May 17, 2026 amending the European Resource Adequacy Assessment (ERAA) methodology, acting on a proposal submitted by ENTSO-E in November 2025. The amended methodology governs the technical b…
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ACER updates REMIT Manual of Procedures Annex VII and FAQs to harmonise inside information disclosure standards
ACER published a revised Annex VII of its Manual of Procedures on May 17, 2026, alongside updated FAQs governing inside information disclosure under REMIT. The revision targets disclosure harmonisation and data quality i…
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ACER issues Recommendation to NRAs on barrier-reporting methodology for non-fossil flexibility in flexibility needs assessments
ACER published a Recommendation on May 17, 2026 directing national regulatory authorities on how to identify and report barriers to non-fossil flexibility within their flexibility needs assessments. The Recommendation es…
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ACER issues formal Recommendation to European Commission on accelerating EU electricity market rule implementation
ACER published a formal Recommendation on May 17, 2026, addressed to the European Commission, identifying measures to accelerate effective implementation of EU electricity market rules. The Recommendation calls for stron…
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ACER releases compliance report on Latvian gas transmission tariff reference price methodology under EU Network Code
ACER published a report on May 17, 2026 evaluating whether the Latvian gas transmission tariff reference price methodology complies with the EU Network Code on Harmonised Transmission Tariff Structures (NC TAR), establis…
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ENTSO-E submits proposal to ACER to amend regional electricity reserve capacity sizing methodology
On 25 March 2026, ACER received a proposal from ENTSO-E to amend the methodology for regional sizing of reserve capacity under the electricity balancing framework. ACER will issue a decision on the amendment by June 2026…
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ACER publishes two open letters on updated REMIT reporting obligations for energy market data parties
ACER published two open letters on May 17, 2026 detailing key changes and compliance expectations under the updated REMIT framework for data reporting parties. The letters address the strengthened wholesale energy market…
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