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Visit EDF -
Brennilis site

EDF, France's leading electricity producer and supplier, invites you to discover electricity and nuclear power. How is electricity produced? How does a nuclear power plant work?


Come and get the answers directly on site!

Guided tour: EDF nuclear power plant in Brennilis (29)

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Welcome to the Brennilis nuclear power station, currently being deconstructed in the heart of Finistère!


Enjoy a unique experience for over half a day as you enter the only reactor in France open to tourists!

Discover the EDF site at Brennilis and find out more about a reactor, how it works and its place in the history of nuclear energy. Dismantling will of course be at the heart of the visit. Different themes will be suggested to help you understand the constraints imposed by this reactor and the solutions envisaged. The management of waste, from on-site production to sorting, packaging and disposal, will also be covered.


Our mediator guides welcome you all year round to the Maison du Lac (located near the power station) to offer you an introduction to the energies and history of the site, with numerous visits and workshops.

Outdoor visit to the Cordemais power plant: Energy and the Monts d'Arrée 

This tour outside the industrial facilities provides an opportunity to discover the site and its history, and to learn about the electricity mix (renewable, nuclear and thermal) with the presence of the Nestavel dam, the nuclear reactor and the combustion turbines. The tour also provides an opportunity to learn about the local flora and fauna, as well as the principle of environmental monitoring inherent in any industrial facility.

Guided tour only / Length of tour: approx. 1 hour 5 people minimum.
Available from Monday to Friday, subject to feasibility (weather conditions in particular) and with a minimum of two weeks' notice.

Guided tour: “From yesterday to today, metamorphosis of a site”

An educational tour of the nuclear facility, outdoors only, allows visitors to see all the stages already completed in the decommissioning project by getting as close as possible to the locations of the buildings. Particular attention is paid to environmental prevention as part of the dismantling procedures, and to waste packaging and disposal.


Guided tour only / Length of tour: approximately 1 hour. Minimum 5 people, maximum 16 per guide. Available from Monday to Friday, with a minimum of 3 weeks' notice. Conditions of access: 12 years and over (on presentation of a valid identity document: CNI or passport); wearing of PPE obligatory (helmet and chasuble). Feasibility subject to industrial activity on site. Minors must be accompanied.

Guided tour: Fridays at the Power Plant - “Inside the reactor enclosure”
On 12 and 26 July and 31 August 2024.

As part of its "Fridays at the Power Plant" program, on the last Friday of each month, EDF is offering an exceptional visit to its nuclear facilities, inside the reactor containment. You will discover the history of this nuclear facility, its specific technical features and the dismantling process developed to meet the specific conditions of this reactor. You will learn about the history of this reactor, its specific technical features and its dismantling process. In accordance with the protocol for access to nuclear zones, you will go through the cold and hot changing rooms to put on the specific equipment for nuclear workers before entering the only reactor in France open to visitors.


Visiting conditions : 

  • Guided tour only

  • Length of visit: approximately 3 hours 30 minutes. 

  • Please register by email only:

  • Places are limited to 16 people.

  • Bookings open three months in advance.

  • Entry requirements: 18 years and over (upon presentation of a valid identity document: CNI or passport and a full social security number).

  • Personal protective equipment must be worn (helmet and vest outdoors and overalls indoors).



This tour is not open to pregnant or breast-feeding women. It requires you to be in perfect physical condition, which is why we do not recommend it for people over 75. Please contact us in advance if you have any stitches, piercings or tattoos less than 15 days old, or if you have recently undergone nuclear medicine treatment.


For your information, to enter the nuclear zone, you must go through a non-mixed cloakroom to change completely and put on access clothing.

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Visit Brennilis



Visits to the facilities are reserved for professional, association or school groups and must be booked in advance.


Tel: 02 98 99 69 06



Price: free of charge.


Public Information Centre - La Maison du Lac


High season: open from 1 June to 30 September - Every day from 1pm to 6pm.


Low season: open from 1 October to 30 May - Wednesdays and Saturdays from 1pm to 6pm.

Please note: following the damage caused by the storms at the end of last year, our reception area is currently closed to the public. 

See all tours in Bretagne

Individual / Group Rates & Information

For everyone


Booking is required.

Valid ID (ID card or passport), full social security number and home address must be presented.

Visits are authorised for people aged 18 and over / Maximum 16 people per group / Valid ID to be presented on the day of the visit", the most important thing is that prior booking is compulsory!

A copy of identity papers and Social Security number must be provided at least two weeks in advance to gain access to the site.

Access to the nuclear site (outdoor tour) is authorised for children aged 12 and over. Access to the reactor containment is authorised from the age of 18.

Minors must be accompanied by an adult.

Wear trousers, long-sleeved clothing and flat, closed shoes. Be in good physical condition. Do not suffer from vertigo.

Minimum group size: 6 people; maximum group size: 16 people.

Appointment address

Service Visites & Conférences Centrale nucléaire en déconstruction de Brennilis

Site des Monts d'Arrée


Tél. : 02 98 99 69 06

Mail :

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