ACER (the EU Agency) and the national (energy) regulatory authorities protect energy markets from abuse, building trust that energy markets work well for businesses and citizens. It is important that wholesale energy markets function well and that prices are determined in a fair way. 

The Regulation on Wholesale Energy Market Integrity and Transparency (REMIT) came into force in 2011 to support open and fair competition in the European wholesale energy markets.

The revised REMIT (which takes effect from 7 May 2024) introduces new measures to better protect the EU citizens and businesses from energy market abuse. How?

• The revised REMIT brings a closer alignment of the EU rules on transparency and integrity of energy markets with those in the financial markets.
• The scope of REMIT is expanded. For example, it now also covers energy (electricity and gas) storage, and the market abuse provisions under REMIT also apply to financial instruments.
• ACER regular surveillance scope is expanded to EU platforms covering electricity balancing markets and more information is provided about algorithmic trading.
• The REMIT reform creates a new setting for investigations and enforcement. ACER has been granted an investigatory mandate in cross-border cases affecting two or more Member States. This mandate complements national regulators’ investigatory authority, with ACER and NRAs working closely together. See ACER’s Rules of Procedure on how such cross-border investigations are conducted.
• Enforcement continues to be at national level. The power to impose fines for infringements of the REMIT prohibitions or the substantive obligations included in the regulation will remain in the hands of the Member States. ACER’s enforcement powers are limited to ACER being able to carry out our investigations or compliance with our requests for information e.g. if a party inhibits our onsite inspection or fails to provide the requested information then ACER can impose a fine. ACER has also been tasked with adopting decisions to approve the authorisations and the withdrawal of authorisations of Inside Information Platforms (IIPs) and Registered Reporting Mechanisms (RRMs).
  • ‘Inside Information Platforms (IPPs)’ are internet-based platforms where market participants can publish inside information. With the revised REMIT it will be mandatory to use IIPs for the disclosure of inside information.
  • ‘Registered Reporting Mechanisms (RRMs)’ are entities that have the authority to submit data and transaction information to ACER on their own behalf (their own data) and/or report data of other market participants (in which case they provide a service). There are about 140 RRMs (see the list of RRMs). Authorisation is only available to RRMs that were founded within the European Union.
  • ACER will also develop and operate a platform serving as a sector-specific electronic access point for inside information that is disclosed, as well as a digital reference centre of information on EU wholesale energy market data.

See the ACER Open letter which addresses questions from stakeholders to help them comply with their reporting obligations under ‘Revised REMIT’.

​Multiple actors cooperate and contribute in ensuring and delivering the transparency and integrity of wholesale energy market under REMIT. These include ACER, national regulatory authorities (NRAs), persons professionally arranging transactions, market participants, or any person observing potential market abuse.

All these actors can notify a potential REMIT breach observed either in the analysis of REMIT data, continuous market monitoring, or in their daily practice.

Anyone can notify suspicious behaviour under REMIT through the notification platform.

ACER is responsible for collecting all relevant trading data, monitoring wholesale energy markets and coordinating follow-ups on potential REMIT breaches to ensure consistency at European level.

While REMIT enforcement remains the responsibility of national regulatory authorities (NRAs), the revised Regulation (2024) has expanded ACER’s role to include investigating market abuse cases that affect two or more EU countries. See ACER’s Rules of Procedure on how these cross-border investigations are carried out.

Cycle of REMIT activities (under ACER and NRAs):

• ​​​​​​Define data collection standards
• ​​​Collect REMIT Data
• ​​​Assess
• ​​​Detect
• ​​​Notify
• Coordinate​
• Investigate
• ​​​Penalise
• ​​​Deter​

​​​​​​The European energy sector is engaged into a profound energy transition, whose overall success highly depends on the efficiency and integration of the European electricity markets.

Since the Directive on common rules for the internal market in electricity (1996), which marked the beginning of the market integration process at the European level, significant progress has been made towards establishing an efficient Internal Electricity Market. The successive legislative packages (and more recently the Clean Energy Package) contributed to further strengthening the foundations of the Internal Electricity Market.  ​

Despite this progress, there are still numerous obstacles to overcome before achieving a truly integrated efficient market. 

Among these: the full implementation of the Network Codes and Guidelines developed since 2011 (constituting the backbone of the Internal Electricity Market) and the efficient and secure integration of renewables' intermittent generation.

Building upon the sustained efforts of National Regulatory Authorities (NRAs) and the continuous support of all stakeholders, ACER's Electricity Department is committed to meeting all these challenges. ​

To better support the market integration process, the Department has organised its activities into five teams:

• The Market Codes team is responsible for developing, implementing and monitoring the European market rules.

• The Grid Connection and System Operations team develops, implements and monitors the grid connection and system operation rules harmonised at European level.

• The Market Monitoring team is in charge of identifying the barriers to the well-functioning of the European electricity markets.

• The Infrastructure team ensures an efficient and transparent network development.

• The Adequacy team is responsible for the development, implementation and monitoring of sound and transparent methodologies identifying resource gaps in Europe.​​

We are looking for a Human Resources Officer – Data & Processes to strengthen our data-driven HR function and support the continuous improvement of workforce planning, reporting, and HR operational processes.

In this role, you will contribute to the development of reliable HR analytics, performance metrics, and executive reporting, enabling evidence-based decision-making and organisational planning. You will play a key role in maintaining and analysing HR data, supporting the implementation of modern reporting tools, and helping drive the digital transformation of HR processes across the Agency. Additionally, you will coordinate trainee and graduate programmes, supporting recruitment, onboarding, development activities, and programme evaluation.

Reference: ACER/2026/03

Published: 5 February 2026

Deadline to submit applications: 5 March 2026, 14:00 CET

We are looking for a Human Resources Officer to lead the development of policies and workforce strategies while ensuring strict compliance with regulatory frameworks and EU Staff Regulations. 

In this role, you will provide strategic advisory support to senior management across the full employee lifecycle, driving modern talent management and performance processes. Additionally, you will oversee HR analytics and executive reporting to deliver data-driven insights that enhance organizational governance and operational efficiency.

Reference: ACER/2026/02

Published: 5 February 2026

Deadline: 5 March 2026, 14:00 Ljubljana Time

We are looking for a Policy Officer – Security of Supply with expertise in analysis and modelling of the power system with a focus on security of supply and supply adequacy. The candidate  will also have experience in leading complex projects and working with diverse stakeholders.

In this role, you will have the opportunity to play a crucial role in contributing to the tools, solutions and oversight related to the assessments of the European energy system needs. 

Reference: ACER/2026/01

Published: 27 January 2026

Deadline: 24 February 2026, 14:00 Ljubljana Time

The Agency may offer positions to experienced and highly-motivated Seconded National Experts (SNE), who will work together with the Agency’s staff.

No deadline for applications

Reference: ACER/SNE/2023/OC

Are you a strongly motivated, highly qualified and competent young professional? If your answer is yes, you landed in the right place.

ACER traineeship programme aims to attract university graduates who are interested in developing professionally by embarking on an exciting learning opportunity.

No deadline to apply.

You can be contacted at any time to join us for March or September semester.

Reference: ​ ACER/TRAINEE/2024/OC

The ACER graduate programme aims to attract graduates with a completed Master Degree and PhD students who are interested in developing professionally by embarking on an exciting learning opportunity in EU energy regulation in its offices in Ljubljana, Slovenia.

The aim is to create a pool of fresh talent capable of contributing to core ACER tasks and policy and creating a bridge with the latest academic insights.

No deadline to apply.

Reference: ​ ACER/GRADUATE/2023/OC

The European Union Agency for the Cooperation of Energy Regulators (ACER) was established in March 2011 (Third Energy Package legislation) to foster cooperation among the EU’s energy National Regulatory Authorities (NRAs) and help ensure that a single Eu​​ropean market for electricity, and similarly natural gas​, functions well. ACER's headquarters are in Ljubljana, Slovenia. 

ACER is one of the EU decentralised agencies. Distinct from the EU institutions, agencies are set up as separate legal entities to perform specific technical and scientific tasks that help the EU institutions and Member States to implement policies and take decisions. EU agencies support the cooperation between the EU and national governments by pooling technical and specialist expertise. Besides working with a wide range of energy stakeholders, the EU institutions and policy makers, ACER works closely with other European agencies through the EU Agencies Network (EUAN). See the EUAN work programme 2023-2024.

ACER’s role includes:

• Supporting the integration of energy markets in the EU (by common rules at EU level).
• Contributing to efficient trans-European energy infrastructure, ensuring alignment with EU priorities.
• Monitoring energy markets so that they function well, deterring wholesale energy market manipulation and abusive behaviour.
• Where necessary, coordinating cross-national regulatory action.

​Our overall purpose is achieving a transition of the European energy system in line with the political objectives set, reaping benefits of increased energy market integration across Europe, and securing low-carbon supply at least possible cost for European businesses and citizens.

The Agency promotes:

• a more competitive, integrated market, offering consumers more choice
• an efficient energy infrastructure and networks, enabling energy to move freely across borders, the integration of renewable sources, and therefore ensuring a higher degree of security of supply
• a monitored and transparent energy market guaranteeing consumers fair prices and a limitation of market abusive behaviours

Watch the video & discover what ACER does for you.

11.11.2025 - ACER/2025/OP/0046: Provision of medical services for the European Union Agency for the Cooperation of Energy Regulators (LOT 1: Provision of medical centre services; LOT 2: Provision of medical advisor services)

Closing date: 18/12/2025 by 16:00 hours local time

Contract notice

Different bodies manage ACER's policy and activities:

• The Head of the Agency is the Direc​tor​. The Director manages and represents the Agency.
• The Adm​inistrative Board (AB) is responsible for the Agency's governance as well as all administrative and budgetary activities. The AB members are appointed by the European Commission, the European Parliament and the Council of the European Union.​
• The Board of Regulators (BoR) is in charge of the regulatory policy and overseeing all the activities connected. The BoR is composed by senior representatives of the national regulatory authorities (NRAs) for energy of the 27 Member States.
• The Board of Appea​l (BoA) deals with complaints lodged against ACE​R ​​decisions​. It is independent from the administrative and regulatory boards.​
• The ACER Working Groups​ advise the ACER Director and the Board of Regulators on the regulatory activities of the Agency. The Working Groups are composed of representatives of ACER, national regulators, and the European Commission. ​​

ACER has about 170 employees, both permanent staff and experts seconded by national regulatory authorities (NRAs).

ACER staff is organised into 7 departments​.​​​​

The Administrative Board (AB) is the governing body of ACER. It is tasked with the appointment of the main bodies of ACER, including the Director, and with exercising budgetary powers.  It also adopts the work programme of ACER for the coming year and its multi-annual programme.

The AB plays a central role in establishing the budget, including the drafting of the financial rules. It also ensures that ACER carries out its mission and performs its mandate.

The Adminstrative Board is composed by nine Members and nine alternates, appointed by the European institutions. 

Two members are appointed by the  European Commission, two by the European Parliament and five by the Council of the European Union.

​The Administrative Board adopts its rules of proc​edure​​​.​​​​​