Catto embarks on an 18-month spell of on the board of WindEurope, replacing current post-holder and CEO of developer Enel Green Power, Francesco Venturini, who held the role since April 2016.
Venturini has been in the role since April 2016, taking an active role in the WindEnergy Hamburg event in September last year.
Following his appointment, Catto, who has been heading up RES since November 2016, said: "At a time when wind energy continues to advance, it is now affordable for consumers and is playing a key role in helping Europe meet its climate targets".
WindEurope CEO Giles Dickson welcomed Catto to the role. "Having one of the world's largest independent renewable energy companies at the helm of WindEurope, with its expertise across wind, solar, power and storage, will undoubtedly be a great asset to us," he said.
Catto is likely to make his first appearance in the role at WindEurope's conference and exhibition in Amsterdam in November.
Once again, the next WindEnergy Hamburg event on 25-28 September 2018 will be held in conjunction with WindEurope's Global Wind Summit. Two further WindEurope summits take place in 2019 and another joint WindEurope-WindEnergy Hamburg event in 2020.
Then, as part of a long-term events strategy, from 2021, WindEurope is merging its onshore and offshore conference and exhibitions into one summit, to take place in Copenhagen in April 2021.