That makes the assumption that consciousness is a function of energy and not simply a biochemical anomaly. And even if it is a function of energy, there is no way to show that it remains coherent after death, and not just random electromagnetic fluctuations.
As for your energy remaining in the universe after your death, the same can be said of your atoms, whether from the decay products of your body or even the waste products throughout your life. That doesn't mean that you go on, just that your atoms do. And they are, in general, recycled into other beings on into the future. So perhaps you can interpret that as a form of immortality, if you wish. The way I see it, we all have at least some atoms inside our bodies which at some point have passed through the gastro-intestinal tracts of innumerable other creatures throughout time.
In other words, we're all full of shit!![]()