national grid• Isobel Drury, of the society, warned against plans to solve water shortages through a national grid or local water grids.• Landcorp, which administered government buildings and land; and Electricorp, which operated the power stations and the national grid.• For a start it is 40 percentcheaper than electricity from the national grid.• The plant will generate around 30 megawatts of electricity, which will be fed into the national grid.• In the 17-monthperiod from March 1980 to August 1981 alone, 15 units were connected to the national grid.• Dounreay was chosen because it possessescablelinks to the national grid and a suitablecoastal site.• It said it would cut the power supply to the national grid if its demands were not met.• The resulting uniform frequency of energy allows synchronisation with the national grid.