The Eskom board has been reduced to just five non-executive directors, from a necessary 13, after the resignation with immediate effect of Busi Mavuso on Tuesday soon after a short meeting between the board and Public Enterprises Minister Pravin Gordhan. Mavuso, who is also the executive director of Business Leadership South Africa, was the sole remaining chartered accountant on the board and chairperson of the two-person finance and investment sub-committee.