Vogtle Unit 4 reaches first criticality

Vogtle Unit 4 reaches first criticality

2.14.2024

Operators have safely started the nuclear reaction at Vogtle Unit 4, according to an announcement from Georgia Power.

This step, known as initial criticality, happens when the nuclear fission reaction becomes self-sustaining and is necessary to generate enough heat to produce electricity. Operators will now continue increasing power through multiple steps, ultimately raising power to 100 percent.

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