One day, in modern time, the space agencies of the world detect a strange structure drifting through space. NASA manages to redirect the course of this structure, and with their new solid handwavium rocket thrusters, land it safely in Nevada. Closer inspection yields that it is an alien machine that can create portals through space. This machine appears to have infinite range, and violates the speed of causality as we know it. They are able to control the machine, and where the portal leads to. However, the caveat: being designed by at least a class II civilization, the machine consumes something on the order of 30 terawatts whenever running. Could humanity hope to power this machine in the near future, and if so, would it be worth it?
-EDIT- a few nanoseconds is not exactly useful for transporting objects through it, assume the device needs a least 10 seconds to create the wormhole, plus however much time is needed to bring things through it.