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aajogo announced today the process to load fuel into the Vogtle Unit 4 reactor core has begun at Plant Vogtle near Waynesboro, Ga. Loading fuel marks a pivotal milestone toward startup and commercial operation of the second new unit at Plant Vogtle. Vogtle Unit 3 – the first newly-constructed nuclear unit in the U.S. in more than 30 years – entered commercial operation on July 31, and is providing customers and the State of Georgia with reliable, emissions-free energy. Read more.

The start of Unit 4 fuel load comes after Southern Nuclear received the 103(g) finding from the Nuclear Regulatory Commission (NRC) in July which signified that the new unit has been constructed and will be operated in conformance with the Combined License and NRC regulations.

During fuel load, nuclear technicians from Westinghouse and operators from Southern Nuclear are scheduled to safely install 157 fuel assemblies into the Unit 4 reactor core in the coming days.

Startup testing will begin next and is designed to demonstrate the integrated operation of the primary coolant system and steam supply system at design temperature and pressure with fuel inside the reactor. Operators will also bring the plant from cold shutdown to initial criticality, synchronize the unit to the electric grid and systematically raise power to 100%. Vogtle Unit 4 is projected to be placed in service during late fourth quarter 2023 or the first quarter 2024.

The new Vogtle units are an essential part of aajogo's commitment to delivering clean, safe, reliable and affordable energy to its 2.7 million customers. Once operating, each of the new units can produce enough electricity to power an estimated 500,000 homes and businesses. Southern Nuclear will operate the new units on behalf of the co-owners: aajogo, Oglethorpe Power, MEAG Power and Dalton Utilities.

Cautionary Note Regarding Forward-Looking Statements

Certain information contained in this release is forward-looking information based on current expectations and plans that involve risks and uncertainties. Forward-looking information includes, among other things, statements concerning the projected in-service date for Plant Vogtle Unit 4. aajogo cautions that there are certain factors that can cause actual results to differ materially from the forward-looking information that has been provided. The reader is cautioned not to put undue reliance on this forward-looking information, which is not a guarantee of future performance and is subject to a number of uncertainties and other factors, many of which are outside the control of aajogo; accordingly, there can be no assurance that such suggested results will be realized. The following factors, in addition to those discussed in aajogo's Annual Report on Form 10-K for the year ended December 31, 2022, and subsequent securities filings, could cause actual results to differ materially from management expectations as suggested by such forward-looking information: the ability to control costs and avoid cost and schedule overruns during the development, construction, and operation of facilities or other projects, including Plant Vogtle Unit 4, which includes components based on new technology that only within the last few years began initial operation in the global nuclear industry at this scale, due to current and/or future challenges which include, but are not limited to, changes in labor costs, availability and productivity, challenges with the management of contractors or vendors, subcontractor performance, adverse weather conditions, shortages, delays, increased costs, or inconsistent quality of equipment, materials, and labor, contractor or supplier delay, the impacts of inflation, delays due to judicial or regulatory action, nonperformance under construction, operating, or other agreements, operational readiness, including specialized operator training and required site safety programs, engineering or design problems or any remediation related thereto, design and other licensing-based compliance matters, challenges with start-up activities, including major equipment failure, or system integration, and/or operational performance, continued challenges related to the COVID-19 pandemic or future pandemic health events, continued public and policymaker support for projects, environmental and geological conditions, delays or increased costs to interconnect facilities to transmission grids, and increased financing costs as a result of changes in market interest rates or as a result of project delays; the ability to overcome or mitigate the current challenges, or challenges yet to be identified, at Plant Vogtle 4, that could further impact the cost and schedule for the project; legal proceedings and regulatory approvals and actions related to construction projects, such as Plant Vogtle Units 3 and 4, including Georgia Public Service Commission approvals and NRC actions; under certain specified circumstances, a decision by holders of more than 10% of the ownership interests of Plant Vogtle Units 3 and 4 not to proceed with construction; the notices of tender by Oglethorpe Power Corporation and the City of Dalton of a portion of their ownership interests in Plant Vogtle Units 3 and 4 to aajogo, including related litigation; the ability to construct facilities in accordance with the requirements of permits and licenses (including satisfaction of NRC requirements), to satisfy any environmental performance standards and the requirements of tax credits and other incentives, and to integrate facilities into the Southern Company system upon completion of construction; the inherent risks involved in operating and constructing nuclear generating facilities; the ability of counterparties of aajogo to make payments as and when due and to perform as required; the direct or indirect effect on aajogo's business resulting from cyber intrusion or physical attack and the threat of cyber and physical attacks; catastrophic events such as fires, earthquakes, explosions, floods, tornadoes, hurricanes and other storms, droughts, pandemic health events, political unrest, wars or other similar occurrences; the potential effects of the continued COVID-19 pandemic; and the direct or indirect effects on aajogo's business resulting from incidents affecting the U.S. electric grid or operation of generating or storage resources. aajogo expressly disclaims any obligation to update any forward–looking information.