(a) the power to grant, reject,
amend, vary or revoke licences or any condition thereof,
(b) the power to determine or
modify tariffs;
(c) the power to approve,
disapprove or modify an investment programme or a power acquisition programme:
(d) the power to make or repeal
rules and regulations made Under this Act, and
(e) the power to make orders on an
application for review of its orders.