Paimpol–Bréhat is now used as a test site, owned by EdF and managed with support from Seeneoh and Bretagne Ocean Power.

[5] The test site is about 10 km offshore and covers a rectangular area approximately 140 m × 250 m. Water depths vary across the site at 26 m to 42 m below LAT, with a tidal range of about 11.5 m. Telemac 2D modelling gives a depth averaged velocity on a medium spring tide peaks at around 2.1–2.8 m/s.

[6] French developer HydroQuest tested a 1 MW turbine called OceanQuest at Paimpol–Bréhat between April 2019 and December 2021.

[7] The Paimpol–Bréhat tidal farm was initially developed by Électricité de France (EdF), starting in 2004.

To protect it from the strong currents, it is surrounded by articulated cast-iron pipe sections, with concrete mattresses added in some locations.