Pachauri went on indefinite leave in February following an uproar over what was seen as his promotion amidst the sexual harassment controversy.
The governing body, which includes industry stalwarts such as Naina Lal Kidwai and Deepak Parekh, received criticism for not taking action against Pachauri.
The complainant had quit the organisation, saying it did not take adequate action against him.
TERI's
internal complaints' committee had found Pachauri guilty of sexual
harassment, although the verdict has since been stayed by an industrial
tribunal.