Earlier in 2013, Wheels24 reported that Drayson Racing was the first team to sign up for the new global Formula E series.
JOINING THE E-GANG
Andretti, a former F1 racer and son of 1978 world champion Mario, said: "It's an honour for Andretti Autosport to have been selected as one of the 10 founding Formula E teams for the inaugural season.
"I look forward to further exploring the series and helping build the future of open-wheel racing across the world."
Andretti Autosport are the third team to commit to the championship after Britain's Drayson Racing - who recently broke the world electric land speed record - and China Racing.
The FIA-sanctioned series will involve 10 teams and 20 drivers competing in races in 10 cities around the world. There are two US cities on the provisional schedule - Los Angeles and Miami.
Andretti will use a Spark-Renault Formula E car in its first season.
The car is built by French-based company Spark Racing Technology who are part of a consortium that includes the McLaren and Williams Formula 1 teams as technology partners.
Andretti Autosport are a leading IndyCar team with four championships in that series as well as winning the Indianapolis 500 in 2005 and 2007.