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It means that at least somebody in the UK is thinking of non-centralized, non-petroleum, non-coal energy sources.
(And I take it that Sellafield was a low-level nuclear accident.)
The first priority is to make sure there is enough energy for residential use of the populace. This probably won't require nuclear power, and most countries can develop such resources pretty fast if they have to.
The problems that require nuclear power -- or some other high-density power source -- involve industry and economic growth. I see that as the major problem in the twilight of the oil age. Economic devolution is likely to be extremely destructive, even if it does mean that Wal-Mart tanks, ugly suburbs cease to exist, and people get to know their neighbors a little better.
But even with a crash program of nuclear generator building, I don't think enough energy will come on-line fast enough to prevent major problems from happening. Not only does the nuclear industry have to contend with a three-decade-long atmosphere of fear and suspicion (some of which is well-earned, but most of which is unwarranted), but in a severe economic turndown, raising capital to build nukes will probably be quite difficult at least initially. Even in the best of circumstances, it would take at least five years to build a nuke, and we need some two thousand of them (at an average of 750 million watts per station).
My own favorite long-term solution, development of tele-operable industrial "habitats" in space, reqires even more time and capital than a nuclear program. And one way or another, our current kind of passenger automobile system is doomed.
Development of solar, wind, biofuels, tidal, geothermal, TDP, etc., will at least provide the necessities with little centralization required. If we're facing any kind of miserable economic period at all, whether it's 10 years of 75 years, we might as well be able to survive and stay healthy -- especially if major climate changes are coming.
--p!
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