The Aliso Canyon blowout, the largest gas leak in U.S. history, sparked hundreds of lawsuits, government penalties and, much to the anger of residents, a single misdemeanor criminal charge.

The settlements and fines from the disaster cost the gas well’s operator, Southern California Gas Co. and its parent company, Sempra Energy, more than $2 billion over the last decade.

An agreement with the state prevents it from recovering those costs from ratepayers.

Those payments include:

$1.8 billion in personal injury lawsuits.

$119.5 million to settle city, county and state government claims.

$4.3 million to settle the county’s criminal case.

$105 million to the California Public Utilities Commission, including $34.1 million in greenhouse gas mitigation funds.

In 2021, the bulk of the

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