Southern California Edison is asking for $3 billion more – now a total of $7.6 billion – from Tokyo’s Mitsubishi Heavy Industries, which manufactured the faulty steam generators that led to the permanent shutdown of the San Onofre nuclear power plant, the Los Angeles Times reports. The amount the utility wins would be split 50-50 with customers. However, Mitsubishi maintains it owes no more than $137 million, according to the agreements that were signed.