The IGC are currently working on a set of ‘E-concept’ rules for gliders equipped with electric means of propulsion (MOP) in competitions.

If the proposal is accepted, a new event will replace the 13.5m World Gliding Championships in 2019, opening the competition to gliders with up to 15m wingspan with electric power units. The 2019 WGC will provide an opportunity to experience the concept in action, allowing the IGC to consider how it can be developed for the future.

https://www.fai.org/news/e-concept-rules-electric-gliders?type=term&id=32