GP's point still remains. Even if you do charge corporations $5 kWh, that's likely not enough to solve the power deficit. After all, corporate offices aren't exactly power suckers (a 1500W space heater is equal to at least a few dozen LED office lights), and the heavy users (factories) are usually the first ones to go when there's a power shortage. Price signals are still needed to ensure that people are sufficiently motivated to change their behavior. Leaving prices unchanged will basically mean consumer demand remains unchanged.