Well, the answer to this is fraught with semantics. Which is a fancy way of saying, "Well, it's complicated." So let me get to the point. First, if you're looking into Power Engineering, and the way you describe your particular area of interest, you're by definition not "running your own show," because your goal is to provide a service to others. Sure, you might start some sort of company that would cater to that sort of thing, but in general, power generation is by nature a large-scale operation. And what you describe is to benefit from the fact that it's getting larger all the time. In Asia, power consumption will grow like crazy because all developed countries need more and more power all the time. And to provide it dependably and efficiently is the best way to compete with other developed countries. So should you take advantage of it? Absolutely! And since you mention switching over from computers, keep in mind that pretty much anything you do that will benefit anyone will likely be migrating toward merging with computer technology. So I'll just summarize this with what should be pretty obvious by now. The answer to whether you should get involved in Power Engineering, and particularly with the approaches you've listed and options you've listed, is "Yes!" In fact, it will be absolutely essential to progress in the world of new technology.