Lotterer joined Formula E with Techeetah in 2017, partnering Jean-Éric Vergne. After a disastrous Hong Kong weekend, where he was disqualified in race 1 and finished 13th in race 2 and a forgettable Marrakesh, Lotterer made his first podium in 2018 Santiago ePrix after battling with his teammate Vergne. They helped the team achieve the first 1-2 finish for a team in Formula E, although during the race it looked as though they could have blown it. A charging Lotterer drove into the back of Vergne late in the race and the team were not aware due to a power issue in the paddock. He finished third in 2018 Rome ePrix. He finished the 2017–18 season 8th with 64 points.