Let's use the UNCTAD definition of developing countries - there are a number of countries which exceed Canada's per-capita energy usage (the highest of those I mention above) - Qatar, UAE, Trinidad and Tobago and Kuwait.
But those are all small countries, the highest per-capita energy usage by a larger nation is Turkmenistan (exceeding all of the European countries mentioned in the parent - UK, France, Germany - and Japan).
But that's not really the point. Doubtless there is a correlation between energy usage and standard of living. But it's not a 1:1, and there are some huge benefits to be gained - e.g. the US (77,028 kWh / person / year) has triple the usage per capital of the UK (28,501 kWh / person / year). Even in Europe, France and Germany could reduce their usage by a quarter to bring it to the UK level.