Would it be possible to take a wormhole and link a large energy source like a sun or black hole up to an electricity generator? Perhaps as the energy comes over it can generate a very powerful electromagnetic field to contain it, which can then run a huge generator. I imagine the wormholes would be microscopic. I saw somewhere that you can use powerful lasers to create a wormhole.
Think of it as powering something like a light saber through a wormhole connected to a star siphoning its energy over. That siphoned energy creates a powerful electromagnetic field to contain it. That field powers the generator. Maybe this is how to harness the power of stars and black holes.