Down the road from Rotorua in Taupo, they make use of the geothermal energy by building powerstations.

The raging Waikato river (shown below at Huka Falls), means that there are also hydroelectric power stations too.

One needs only to look at the vastness of Lake Taupo, the result of a supervolcano eruption, and whose vast caldera is still active underground, to know that there’s certainly energy available, but if that volcano was to erupt again, then we’d all be in big trouble.