Canada is a natural resource power house, with its huge tar sand reserves, but also it has massive electricity production due to its huge investment in hydro electric power stations due to the nations geography and waterfalls.

Canada is one of the largest electricity producers of electricity.

It produces 615.4 TW/h in 2014 with a population of 35 million people.
Now the UK produces 335 TW/h in 2014 with a population of 61 million people.

What this shows is that the Canadians are not super consumers of electricity, but they produce more than they consume, and so export huge amounts across the border to the USA. A huge market for the Canadian electricity sector.