Some campsites have charging stations for electric cars: Le Pommier, La Rive, Les Marsouins.
Au Lac de Biscarrosse, La Farigoulette. The rate is €0.35/kwh (power 7.4 kW) except for Au Lac de Biscarrosse which has slow charge stations (power varies from 2 to 7 kW, fixed price of €15/24h).