TOKYO (Reuters) - Japan's trade ministry has almost doubled the estimated cost of compensation for the 2011 Fukushima nuclear disaster and decommissioning of the damaged Fukushima-Daiichi nuclear plant to more than 20 trillion yen ($177.51 billion), the Nikkei business daily reported on Sunday.
The trade ministry at the end of 2013 calculated the cost at 11 trillion yen, which was comprised of 5.4 trillion yen for compensation, 2.5 trillion yen for decontamination, 1.1 trillion yen for an interim storage facility for contaminated soil, and 2 trillion yen for decommissioning, the report said.
The new estimate raised the cost of compensation to 8 trillion yen and decontamination to 4-5 trillion yen, the cost for an interim storage facility remained steady, and decommissioning will rise by several trillion yen, it added.
The part of the cost increase will be passed on in electricity fees, it added, citing multiple unnamed sources familiar with the matter.
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The ministry could not provide immediate comment.
On March 11, 2011, a massive 9 magnitude earthquake, the strongest quake ever recorded in Japan, created three tsunamis that knocked out the Fukushima-Daiichi plant, causing the worst nuclear crisis since Chernobyl a quarter of a century earlier.
The Ministry of Economy, Trade and Industry will discuss with the Ministry of Finance a possible expansion of the interest-free loan program from 9 trillion yen, to help support the finances of the Fukushima plant operator Tokyo Electric Power Co's, the report said.
The cost of cleaning up Tokyo Electric Power's wrecked Fukushima-Daiichi nuclear plant may rise to several billion dollars a year, from less than $800 million per year now, the Japanese government said last month.
The Mainichi newspaper reported in October that Japan's utilities lobby expects clean-up and compensation costs from the Fukushima disaster to overshoot previous estimates by 8.1 trillion yen.
(Reporting by Osamu Tsukimori; Editing by Michael Perry)