Nantes is well covered by E.Leclerc, Carrefour, Intermarché and Super U supermarket forecourts (usually the cheapest fuel in the region) plus TotalEnergies and Avia branded sites along the périphérique ring road. France's open-data feed provides official price coverage. EV charging is dense for a city this size, both in town and along the A11/A83.
Nantes has more charging points mapped than fuel stations, 121 against 76. That is still rare, and it makes this an easy place to arrive on a low battery. See Nantes on the map →
Plan your stop
In Nantes the filters that actually narrow things down are diesel (68), LPG (20), CNG (4) and CCS charging (37). Travelling at night, switch on "open now": 107 places are tagged 24/7. When you arrive, a quick confirmation keeps the map right for the next driver in Nantes.