[But it's theorized that black holes could strip away one part of the particle-anti-particle creation annihilation loop, so that's one way to do it.]
[Yes, because contained black holes are
so much more practical than particle accelerators. Especially as it's tough to predict which pair will come out.
[Also, I have a hammer that screws with gravity. I've been saying this a lot, but it's not just that it screws with gravity. It's that I'm able to hold it, and use it as a weapon, and it screws with gravity. That's how advanced the tech is. And in all likelihood, I'm already beating physics over the head with it every time I use it, so other than the possibility of finding a place where it's primarily antimatter and harvesting it to use as fuel, physics already left the building in several different locations. This is really just a debate on whether it wants to jump out the window or not, too]
[The problem isn't possibility, it's efficiency. We don't know how energy-hungry that gravhammer thing is, and that doesn't really matter. Given that it takes power to get antimatter, the most important part of antimatter generators, thermodynamics would make it tough to get a net positive in electricity without
very efficient antimatter generation and electrical production from said.]