In Episode 3, we look at the expansion of the hydro-electric power network in the post-war period, as the growing country came to depend on electricity more and more. Workers moved into houses built by the government in specifically designed hydro towns while they constructed these dams. We cover the schemes on the Waikato, then head back to the South Island to look at Roxburgh, Benmore, Aviemore, and then finally the Cook Strait Cable that connected the two islands.

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