[downquark1]

Classically speaking the energy is always there. It's called gravitational potential energy.

As you lift a ball onto a table you are giving it the potential energy to fall back down. When it falls it will exhibit no more energy than what it took to lift it.

There was the view that all the potential energy in the universe would eventually cause it to end in a big crunch. But I don't think this is the favored model these days.