Nick Heidfeld, Jean-Éric Vergne, and Bruno Senna were voted to receive the FanBoost (an extra 30 kW for five seconds per car).
The field seemed to be free of incidents throughout the first couple of laps, but Michela Cerruti was seen entering the pits, possibly after making contact with Bruno Senna.
Meanwhile, championship leader Lucas di Grassi overtook Sam Bird for fourth position and Heidfeld deployed his FanBoost at the main straight, but he failed to take the lead from Buemi.
The top three was now filled by di Grassi, Heidfeld, and Bird, but the latter quickly received a drive-through penalty for ignoring the red lights at the end of the pit lane.
Félix da Costa took victory, with Prost second, Piquet third, Alguersuari fourth, and Senna fifth; Vergne had had to slow down to save energy.