Let’s think about this for a few minutes.
The linked article says the butter sculpture weighs 800 pounds. That’s probably a approximate figure, and it may be somewhat lighter or heavier. But for our purposes, let’s use the 800 pound figure. As you’ll see shortly, we’re dealing with such large numbers, a few pounds either way won’t matter.
Now, as we all know, Bob, E=MC^2. Or, energy equals mass times the square of the speed of light. So how much energy is there in 800 pounds of butter?