U.S. nuclear energy company Westinghouse Electric has filed for Chapter 11 bankruptcy protection, citing massive cost overruns in the construction of four nuclear power reactors in the U.S.

Westinghouse, a subsidiary of Japanese conglomerate Toshiba, says it has secured $800 million in financing as it goes through a "strategic restructuring." But that's just a fraction of the billions in losses it's expected to rack up this year.

Toshiba has said it will take a write-down on more than $6 billion over the Westinghouse cost overruns.

From Tokyo, John Matthews reports for our Newscast unit:

"When the cost overruns for nuclear reactors in Georgia and South Carolina were announced in December of last year, Toshiba in Japan was still struggling to recover from a major accounting scandal that broke in 2015."Top Toshiba officials say that selling off Westinghouse is key to turning the conglomerate around, pegging liabilities from the subsidiary at just less than $10 billion. But analysts say it's unlikely that anyone will pay the nearly $5.5 billion Toshiba paid in 2006, not least because of soured opinion toward nuclear power since Japan's own disaster in 2011."

Westinghouse, whose acquisition by Toshiba wasn't finalized until the fall of 2006, says it will use the financing on what it calls its core businesses: "supporting operating plants, nuclear fuel and components manufacturing and engineering as well as decommissioning, decontamination, remediation and waste management."

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