That 100 mil is 0.4% of annual revenue, and that isn't one year's pay, it's a lifetime of accumulation. There were 20 people in the settlement averaging close to 6 mil each (it was actually 117 mil total). That's really not that high of a net worth for people running an enormous power company. Pay peanuts, get monkeys.

As for transparency, audited financial statements of public companies are infinitely more information than you will ever get about the finances of a government bureaucracy. And their only incentive is to use up their budget so they can ask for an increase next year.