5.—(1) The Authority is responsible for the allocation and recovery of costs relating to the development and implementation of the technical procedures to be apportioned in accordance with paragraph 6 of Annex 29 in so far as those costs apply to GB transmission system operators and relevant electricity market operators.
(2) The Authority may request from a GB transmission system operator or relevant electricity market operator any information it considers is necessary to facilitate the implementation or enforcement of the costs referred to in paragraph (1).
(3) Where the Authority makes a request in accordance with paragraph (2), a GB transmission system operator or relevant electricity market operator must, within three months of the notification of the request, provide to the Authority the information requested.