​On 4th October 2019, the ACER Board of Appeal has amended its Rules of Procedure, in accordance with Regulation (EU) 2019/942. 

To support parties acting in compliance with the legal requirements and prepare their appeals in the most effective way, the Board of Appeal has adopted Practice Directions and a set of templates (cover sheet with general information, table of annexes, confidentiality request, announcement of appeal and a checklist). 

Whilst they are not compulsory, the Board recommends their use to avoid​ possible delays or declarations of inadmissibility.​

The Board of Appeal has also adopted Instructions to the Registrar which can be found in the box below.

The relationship of the Board of Appeal and the Agency in administrative terms is governed by the Administrative Arrangement.​

The Board of Appeal (BoA) deals with complaints lodged against ACER decisions. Any natural or legal person can appeal against a decision taken by ACER where the Agency has actual decision-making powers (individual decisions).

The decisions of the Board of Appeal may as well be subject to appeal before the Court of Justice of the European Communities.​

The Board of Appeal is part of ACER but at the same time independent from its administrative and regulatory structure. It is essential that members and alternates act independently and in the public interest.

The Board of Appeal is composed by six members and six alternates for a mandate of 5 years (renewable).

Members and alternates are selected among current or former senior staff of the national regulatory authorities, competition authorities or other national or EU institutions with relevant experience in the energy sector.​

​The Board of Appeal encourages online communication via e-mail. Correspondents in appeal proceedings are asked to submit documents as electronic files.

Contact:​​

European Union Agency for the Cooperation of Energy Regulators
Trg republike 3
1000 Ljubljana
Slovenia

A word from Volker on his appointment as ACER Director ad interim (from 16 October 2025):

“I am honoured to be entrusted with leading ACER through this interim period from 16 October 2025 until the new Director is recruited. My main goal in the coming months is to ensure that the Agency continues to deliver on its mandate so that this transition is a time of consolidation - steadying the ship and preparing a solid foundation for the future.”

 - Volker Zuleger ​-

ACER is managed and represented by its Director. 

The Director’s term of office is five years. It may be prolonged by the Administrative Board once only, for a further five years.

Mr Volker Zuleger was appointed Director ad interim of ACER, following a decision by the Agency’s Administrative Board on 12 September. He took over as Director ad interim from 16 October 2025, ensuring the continuity of the service and the proper running of the Agency. He succeeds Mr Christian Zinglersen, who vacated the ACER Director post on 15 October to take up a new position elsewhere.

The Director represents the Agency vis-à-vis external stakeholders and ensures its internal functioning.

He adopts and publishes the official acts (opinions, recommendations and decisions), receiving a favourable opinion from the Board of Regulators.

He is responsible for drafting the annual work programme of the Agency and implementing it under the guidance of the Board of Regulators and the administrative control of the Administrative Board. The Director also draws up a preliminary draft budget and implements the Agency's approved budget. ​

Download high resolution photos of the ACER Director ad interim, Volker Zuleger:

• Official portrait
• Official portrait with ACER logo

Download Mr Zuleger's bio.

​You can contact Mr. Zuleger at:

The Annual Work programme contains ACER's multi-annual outlook, priorities and strategies. 

It is prepared by the Director and adopted by the Administrative Board.

​Before its adoption, the Administrative Board consults the European Commission and must receive a favourable opinion from the Board of Regulators on the ​​regulatory outline.
 

After the adoption, the Administrative Board transmits the Work programme to the European Parliament, the Council of the European Union and the Commission. 

The Work pr​​ogramme is then made public.​

​Have a look at the latest edition:

Every year ACER produces a Consolidated Annual Activity Report (CAAR) describing the activities performed and the objectives achieved during the year, as indicated in the Wo​rk Programme.

​Have a look at the latest edition:​