The ability to switch on a light - something which many of us probably take for granted. Electricity is a huge part of our lives and even a brief cut can prove disastrous, as demonstrated by the Auckland cut on Monday.

But how much do you really know about the state of the electricity sector in New Zealand? Let's conduct a zap around a short-circuit of New Zealand's electricity supply and have a look at the current state of things. I'll try not to plug any specific companies and I hope you find it en-lightening. More >>>