Ousted Eskom CEO Jacob Maroga has slapped the parastatal with a massive R85 million lawsuit.

The Sunday Times is reporting that in a civil claim he filed at the High Court in Johannesburg, Maroga demands what he calls "reasonable damages" unless he is reinstated to the position he left.

The 49-year-old is suing his former employer, its acting CEO and Chairman Mpho Makwana and the Minister of Public Enterprises Barbara Hogan.

He has accused the board of conspiring to illegally fire him under the guise of a voluntary resignation.

Maroga and former chairman Bobby Godsell were involved in a leadership battle last year which eventually led to both men resigning from Eskom in November.