By definition, the law of conservation of energy states that:
Ei = Ef
Ei: initial energy
Ef: final energy
Therefore, no matter the type of energy, always the final energy is equal to the final energy.
Energy can be transformed into another type of energy. For example, the potential energy can be transformed into kinetic energy.
Also, energy is not created, nor destroyed.
The following is not true about the Law of Conservation of Energy:
A. It states that the total energy in the universe keeps increasing.