これを終わらせるためにもっとエネルギーが必要だ

これ: this, look
を: o, the, to, wo
終わる: finish, end, over, conclude, terminated
せる: make, let, to make, to do, to perform, to cause
ため: for, due to, because, in order to, because of
に: in, to, on, at, into, upon
もっと: more, more, longer, further, farther
エネルギー: energy, power
が: is, there, but, ga, will, however
必要: need, have, necessary, needed, required, must, want, essential, necessity, indispensable
だ: is, be, are, am, it is, seems