Advanced Civilizations Categorized By The Kardeshev Scale (infographic)

Thats fine. I can wait.

I disagree.

A few decades ago, the best computer required a huge amount of energy.

A few decades later, the technology has improved enormously but the energy the devices use has decreased to a tiny fraction of the energy they used decades ago.

More and better technology doesn't mean more use of energy.

And with the advent of nuclear fusion, this scale will become ridiculous.

If you want to think about travelling to other star systems, you will need a heck of a lot of energy. More than whats currently being produced on earth by a massive amount. A little fusion reactor wont produce that much energy. The first examples produce less than a large windmill, it will be many decades before we can reach a high level of energy output.
New technologies use less energy for the same output, but since we want more powerful computers or more devices etc, we use a lot more energy than a few decades ago.

Interesting perspectives.

I believe the Q-continuum do not use an external energy source to control
'Things' but rather through the use of shear tyranny of will. It would seem
in that existence resources, or the harnessing of energy is irrelevant.