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Distributing electrical energy through the 400,000 V cables of the National Grid wastes some of the energy of the electricity (see below). What is the efficiency of this part of the system to the nearest whole number? Total power generated: 62,161.5 MWStep-up transformer losses: 157 MW Step-down transformer losses: 142 MWLosses caused by heating of the cables during transmission: 1.4%

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Distributing electrical energy through the 400,000 V cables of the National Grid wastes some of the energy of the electricity (see below). What is the efficiency of this part of the system to the nearest whole number? Total power generated: 62,161.5 MW<br />Step-up transformer losses: 157 MW <br />Step-down transformer losses: 142 MW<br />Losses caused by heating of the cables during transmission: 1.4%





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