Power on the Elemental Planes is held by a wide variety of creatures in a wide variety of ways. There are plane-spanning empires, of course, but there are also places where living in just the one place gives you power over the plane. Since grabbing elemental power is such a classic part of D&D campaigning, here are some of the ways you might do it: possibilities for the political situation on the inner planes, sites of magical power, creating your own planes, and so on.