§ Mr. Corbynasked the Secretary of State for Energy, pursuant to his reply to the hon. Member for Islington, North on 28 January, Official Report, column 11, if he will now list (a) the length and incidence of all voltage reductions since 1 March 1984 in electricity supply and (b) the comparative figures for each year since 1972.
§ Mr. Goodlad:I understand from the chairman of the CEGB that, as my right hon. Friend indicated on 28 January, there has been one voltage reduction since 1 March 1984 which lasted for 31 minutes. I am advised that the average number of voltage reductions from 1972–73 to date (excluding the miners' dispute in 1973–74) is 3.08 per year. The cumulative length of these reductions amounts to some 117 hours. The day-to-day operation of the integrated generation and transmission system is a matter for the CEGB.