This would correspond to about $6/gallon gas tax.

https://www.eenews.net/articles/epa-floats-sharply-increased-social-cost-of-carbon/

CLARIFICATION

$6/gallon gas price increase (tax) comes from $600/ton SCC estimate in 2080

The current proposal is “only” $2/gallon at $190/ton SCC.

Trump administration put the SCC at $1/ton [one dollar].

So new tax is only double original forecast………