Responsibility for the operation and maintenance of the national transmission system rests with the National Grid Company (NGC). NGC have a number of important statutory and licence duties relating to the development and maintenance of their system. The duty for enforcing these licence and statutory obligations rests with Ofgem.
Officials in my Engineering Inspectorate monitor power failures attributed to the national grid on an ongoing basis and they liaise with staff in the transmission companies to ensure adequate remedial measures are put in place. At my request, Inspectors recently completed a formal investigation of the major interruptions on