If kinetic energy is increases by 300% then what

Well, when you increase Kinetic energy, the energy has been released into the item. Once the energy is used up, there is no energy left. So, to asnwer your question, if the speed is "increasing" by 300%, then the energy is increasing, too.

It would be (at) + cu (s)

Okay well gravitational energy is matter forced by gravity making energy though the kinetic energy then the electric energy produces electricity from the kinetic energy and the kinetic energy gets its energy from the gravitational energy. was that the answer you wanted or something else?