tl;dr about 5%, if you take very conservative values. I decided to do the maths at a very basic level. Nimitz class carriers produce about 1100MWth between the

tl;dr about 5%, if you take very conservative values. I decided to do the maths at a very basic level. Nimitz class carriers produce about 1100MWth between their two reactors. Gerald R. Ford classes put out about 1400. There's 10 of the former and 1 of the latter. This gives a total generation of 12400MWth accross them all, assuming you could some how take their entire thermal generation and make it offboarded electricity. 1 Barrel of Oil Equivalent is 1.7MWh, thus you need 14.12 barrels per day to generate 1MW constantly. According to the OP article, Russian exports to OECD Europe are about 3 million barrels per day, or about 212500 MW/day.