The Emerald Plains was a field on the planet Urak that was located at the very edge of the universe. Its existence came after the Guardians of the Universe sought out a place for safe storage of Power Batteries following it becoming apparent that numerous Green Lanterns faced critical moments where they needed to charge their Power Rings. To alleviate this problems, the Oans sought out a safe haven and found the unique planet of Urak that had unique properties at its core that allowed a temporal conduit between a Green Lantern Power Ring and a Green Lantern Power Battery. Upon encountering the planet, they discovered a native species that were struggling on the barren world and formed a pact with them. In exchange for a better existence on their world, the Guardians asked these natives to