POWER FACTS

South Waikato News - - FARMING -

Trans­power’s North Is­land Grid up­grade: 400kV power line run­ning from Whaka­maru near Taupo through Waikato to Auck­land. 426 steel power py­lons cov­er­ing 185km. $824 mil­lion in Trans­power ex­pen­di­ture. $165m in “ease­ment” com­pen­sa­tion paid to 308 landown­ers. Quirky facts: The power lines weigh about 7000 tonnes, equal to about 7 mil­lion bags of su­gar. The 426 py­lons weigh about 18,000 tonnes, equal to about 15,000 fam­ily cars. There are about 5000km of op­ti­cal fi­bre ca­ble with the earth­wire. More than 1.5 mil­lion bolts have been tight­ened so far. If the 61 sep­a­rate strands of the power line were laid end-to-end, they would stretch more than 213,000km and reach more than half­way to the Moon.

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