{HEAD ~ The load power controlling apparatus} installed at {TAIL ~ a consumer} has a load unit divided into plural load sections, one of which is controlled in accordance with the state where the electric power company operates an electric power system and can be opened appropriately under the condition of reduction in the supply reserve margin 
{ HEAD ~ The load power controlling apparatus } installed at { TAIL ~ a consumer } has a load unit divided into plural load sections , one of which is controlled in accordance with the state where the electric power company operates an electric power system and can be opened appropriately under the condition of reduction in the supply reserve margin
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