“is it possible to be pagan and not believe in deities, but rather energy? also is there a specific name for this sort of belief so that I could read into it? thanks!”
So you’re a pagan atheist? That’s kind of a contradiction in terms, but the meaning of Pagan is definitely broad and different for every person. The term “deity” can be however you want to believe it to be; an ancient Greek God or Goddess, a dwelling spirit, an animal, a human, or even energy. Though modern Paganism is usually very polytheist, Paganism’s root belief is the unity of the body and spirit with the energies and powers of nature and Earth.
As a Pagan, I do pray to the Goddess Moon and God Sun as deities that sustain life and existence. However, the Universe and Cosmos are what I consider to be the “highest power,” or “ultimate God.” Paganism is a very personal practice, so you can take what you want to believe in with the root beliefs of Paganism.
I don’t know of any specific names for the belief in just energy, but as I mentioned, Paganism is a broad practice – a personal philosophy. With the basic roots of Paganism, you can add whatever other beliefs and practices you believe in.