how come no private investors have startewd power companies?
Just off the top of my head, I can speculate a number of answers to that. And it's probably not too different from here in the US, actually.
(1) Capital outlay: it takes a WHOLE HEAP of money to build a power plant and the associated infrastructure involved in distributing that power to the grid. That's not just actual construction costs, but engineering as well. Design alone can take years - unless you want your new plant to bring down the entire grid due to some screw-up in the engineering.
(2) Many, many years before ROI - that's break-even. You cannot spends hundreds of millions on a new plant and get your money back overnight. From an investor standpoint, most investors don't want their money tied up for ten years before they get a return.
(3) Compliance with Government Regulations (environmental or otherwise). Who needs the hassle? Have you even tried to wade through the maze of dealing with the Feds on ANYTHING? Beauracracy is a wonderful thing,
(4) Psychology I: in this day and age, there just seems tob e the mindset - worldwide - that it is the role of government to "provide." Given the financials and beaureaucratic issues, I would not be surprised to find a lot of folks that actually HAVE the money saying "why bother, the gov't should be providing power anyway." Whether this view is reality or not, it sure does seem to be prevalent.
(5) Psychology II: Everyone wants cheap power, but when it comes time to build a plant, a lot of communities say "not in my back yard." This is especially true of nukes, butI think is general. It's kinda like wanting cheap gas at the pump but being unwilling to fight a war for it or drill for it domestically.
Thanks for the heads-up, Trevor. We face similar issues in the US due to aging plants and little/no new building to support growth in demand.