The European Commission explained: roles, powers, structure
The European Commission is the executive branch of the European Union. It is, simultaneously, the EU’s civil service, its legislative draftsman, its diplomat in trade negotiations, and the guardian of the treaties. Few institutions in the world wear so many hats at once.
Composition: one commissioner per member state
The Commission is led by a College of 27 Commissioners — one per member state. Each is assigned a portfolio (climate, competition, internal market, agriculture, and so on) by the Commission President. The President is proposed by the European Council, taking into account the results of the European Parliament elections, and elected by the Parliament.
The monopoly on legislative initiative
This is the Commission’s most distinctive power: under the EU treaties, only the Commission can propose new European legislation. The Council and Parliament can request proposals; citizens can do so through the European Citizens’ Initiative — but the legal text is drafted in Berlaymont, the Commission’s headquarters in Brussels.
Guardian of the treaties
If a member state breaches EU law, the Commission can launch infringement proceedings. These typically begin with a letter of formal notice, escalate to a reasoned opinion, and may end at the Court of Justice of the EU in Luxembourg. Financial penalties can follow.
Executive functions: budget, competition, trade
The Commission manages the EU’s annual budget (around 170 billion euros) and the seven-year multiannual framework. It enforces competition law across the bloc — clearing or blocking mergers, investigating cartels, ruling on state aid. In trade policy, it negotiates agreements on behalf of all 27 member states.
Directorates-General: the bureaucracy
Behind the Commissioners stands a permanent civil service of around 32,000 staff, organised into more than thirty Directorates-General (DGs). Each DG covers a policy area: DG COMP for competition, DG TRADE for trade, DG ENV for environment, DG CONNECT for digital, and so on.
Accountability and limits
The Commission is politically accountable to the European Parliament, which can dismiss it through a motion of censure. But once in place, individual Commissioners cannot be removed by their own national governments — they swear an oath to act in the European interest, not the national one. That independence is the foundation of the Commission’s credibility.
