A couple of things to consider.
One is that for a fulfilling career path in engineering, your work and responsibility will grow and expand beyond the simply technical, into areas like cost, schedule, client relationships, team management, supervision, planning, safety, environment, legislation and compliance, and a multitude of other things that increase your scope and responsibility.
So when thinking about industries to work in, consider if these things will matter to you (they likely will), and think about the opportunity of those industries to provide them. Industries that have big, expensive projects may be a good place to be.
How narrow are the boundaries of power? Do trains and rail systems count? I've noticed that electric drives in trains have been evolving rapidly, with each new generation of trains having different electronics in the drive and control/signaling systems. When trains take a 25 kV AC supply and process it through multi-megawatt VFD drives to feed to the traction motors, where does this fit in the scheme of things?
But above all, as others have said, don't think you have to be pigeon-holed. The hallmark of a good engineer is to be adaptable and to have a solid, general foundation. Every bit of experience you get is good experience and will likely find some relevance in the future even where you didn't expect it.