Correct, but this doesn't create as much of a wedge as you might suspect. It's also true in the US that commercial electricity tends to be 20-50% cheaper than the home delivered stuff. In the EU the additional tax burden means the difference is usually closer to 40-70%. Ironically, in this way, you could describe the EU as being far more business-friendly than the United States (by dint of being much more consumer-hostile, but hey).

Making the fundamental power generation cheaper is probably still the best lever a private actor can push.