The authorised development must not generate more than 300 megawatts unless otherwise agreed by the relevant planning authority provided that the relevant planning authority is satisfied, following consultation with the relevant statutory nature conservation body to the extent that it relates to matters relevant to its functions, that any increase would not give rise to any materially new or materially different environmental effects in comparison with those reported in the environmental statement.

The undertaker must keep records for the purpose of demonstrating compliance with sub-paragraph (1) and must submit them to the relevant planning authority on an annual basis.

On receipt of a written request to view the records by the relevant planning authority these records must be made available for inspection within seven days of such a request.

References in Schedule 1 (authorised development) to 300 megawatts are to be construed as references to any electricity cap approved under sub-paragraph (1).