Perhaps not. Perhaps they did generate and release it, but sadly they no longer exist except in the "cooked goose" form.
They obviously would not be in the same vicinity as creating the Planck energy. The realistic science behind it isn't that a wormhole is impossible to create, no scientists fully states this. The problems are keeping it open, which requires an antigravity substance, or exotic matter in other words.
Read any popular literature on it you want, it will tell you the same thing.