Vogtle 4 reactor reaches a new milestone, connects to the grid

The Vogtle nuclear power plant, located in Waynesboro, Georgia, recently achieved a significant milestone. Unit 4, which uses an AP-1000 reactor, was successfully connected to the grid on March 1, 2024. The reactor first achieved criticality on February 14, 2024.

Synchronization and connection to the grid mark an important phase in a series of start-up tests. During these tests, operators will gradually increase the reactor’s output and carry out checks at various power levels until it reaches full power. Once all tests have been successfully completed, the unit will be ready for commercial operation, which is planned for the second quarter of 2024.

The AP-1000 design is distinguished above all by its modularity and passive safety systems, which make it safer and more efficient than older reactor types. The reactor is designed to harness natural physical phenomena such as gravity and the natural circulation of water. This minimizes the need for active mechanical systems and reduces reliance on electricity supplies for the reactor’s safety systems.

Development of nuclear power in the US

The successful connection of Vogtle 4 to the grid not only highlights the need to diversify energy sources, but also promises economic benefits for the local community by creating new jobs and stimulating the local economy.

The Vogtle 4 project builds on a long tradition of nuclear power in the United States. However, construction of new reactors in the US came to a halt at the beginning of the 21st century, making the start-up of Watts Bar 2 in 2016 the latest major milestone until recently.

Its sister unit Vogtle 3 began commercial operation in July 2023, and together with Vogtle 4 it represents the latest addition to the US nuclear power fleet. These projects illustrate efforts to modernize and develop nuclear infrastructure using advanced technologies and safety standards.

Cooperation and cost-sharing on the nuclear project

The Vogtle project is the result of cooperation between several energy companies, including Georgia Power, Oglethorpe Power, MEAG Power and Dalton Utilities, under the leadership of Southern Nuclear. This model of cooperation makes it possible to share the costs and risks associated with building and operating nuclear facilities, supporting a sustainable and innovative approach to energy.

The expansion of the Vogtle plant is of crucial importance not only to the US energy sector, but also signals global interest in nuclear energy. With the growing challenges of climate change and the search for sustainable energy sources, nuclear power appears to be key to future energy mixes.