REGULATOR

ACER

Regulator

EU Agency for the Cooperation of Energy Regulators; approves EU-wide methodologies and monitors the internal market.

Developments

18 tracked developments touching this entity.

03 NOV 2026

JAO's GR-MK 'explicit' allocation rulebook revealed as the pan-EU Harmonised Allocation Rules for Long-Term Transmission Rights, not a bespoke daily scheme

Implementation · ENERGY MARKETS · Greece-North Macedonia border (EU CCR Core region)

26 OCT 2026

ACM Publishes Full Decision Text Detailing Seven Required Improvements for Netherlands' First Flexibility Needs Assessment

Decision · FLEXIBILITY MARKETS · Netherlands

20 OCT 2026

MCCG webinar details SDAC/SIDC operational progress: XBID 5.0 corrective measures, 15-min MTU one-year review, fallback robustness workstreams, storage orders consultation outcomes, and IT architecture assessment

Implementation · ENERGY MARKETS · EU

19 OCT 2026

JAO publishes NRA-approved 4th amendment to CCR Core Regional Specific Annex of the HAR, adding SEM-FR border and HVDC return rules ahead of 18 Nov 2026 entry into force

Implementation · ENERGY MARKETS · EU (EU internal bidding zone borders)

15 OCT 2026

TenneT Publishes First Dutch Flexibility Needs Assessment (FNA) for 2030/2035 Under EU Electricity Market Design Reform

Implementation · FLEXIBILITY MARKETS · Netherlands

12 OCT 2026

Energinet publishes finalized Nordic 2025 aFRR/mFRR capacity market evaluation report

Market impact · BALANCING MARKETS · Nordic region (Denmark, Finland, Norway, Sweden)

12 OCT 2026

CREG approves Belgium's first Flexibility Needs Assessment (FNA) report under EU Regulation 2019/943

Decision · FLEXIBILITY MARKETS · Belgium

09 OCT 2026

CRE proposes methodology for capacity-mechanism demand curves, certification coefficients and cross-border contributions

Proposal · ADEQUACY & CAPACITY MARKETS · France

02 OCT 2026

All NEMO Committee's Fourth Annual Conference Reviews SDAC/SIDC Performance and Charts Future Market Coupling Priorities

Market impact · ENERGY MARKETS · EU

22 SEPT 2026

ACER adopts third amendment to mFRR Implementation Framework, harmonising EU-wide FRR prequalification and BSP terms and conditions

Decision · BALANCING MARKETS · EU

22 SEPT 2026

ACER adopts third amendment to the aFRR Implementation Framework, harmonising FRR prequalification, switching, re-prequalification and termination rules for BSPs

Decision · BALANCING MARKETS · EU

09 SEPT 2026

NEMOs and TSOs Advance Redesign of SDAC Full Decoupling Fallback Mechanism

Consultation · ENERGY MARKETS · EU

02 SEPT 2026

CREG approves Nemo Link BE–GB Access Rules v5: consolidated document, flexible market time units and later day-ahead nomination deadline

Decision · ENERGY MARKETS · Belgium–Great Britain (Nemo Link interconnector)

02 SEPT 2026

ACER Decision 11/2026 formally rectifies the Core redispatching and countertrading cost-sharing methodology

Decision · ENERGY MARKETS · Core capacity calculation region

02 SEPT 2026

ENTSO-E consults on need for further ISHM harmonisation

Consultation · BALANCING MARKETS · EU

02 SEPT 2026

EU network code on demand response and related electricity-rule amendments

Regulatory review · FLEXIBILITY MARKETS · EU

31 AUG 2026

ACER referral date confirmed for FCR minimum activation-period decision

Regulatory review · BALANCING MARKETS · Continental Europe Synchronous Area

31 AUG 2026

ACER review of NEMOs’ EU market-algorithm amendment remains underway

Regulatory review · ENERGY MARKETS · EU