Also the Japanese government is projecting a total of somewhere between $200 billion and $600 billion to clean up the mess left behind -- amortizing that on the $/MWh produced by the power plant would probably lead to slightly more expensive power...
The proper way to make the accounting is to sum the cleanup for Three Mile Island, Chernobyl and Fukushima, and then divide by the 120-180 operating nuclear plants and further divide by the 25-35 years of continuous operation:
∑ accidents
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∑ fleet x years operated