Dominion Energy (D) FWPFree writing prospectus

Filed Pursuant to Rule 433

to Prospectus dated May 11, 2023

Registration Statement No. 333-271838

Company Article regarding Dominion Energy Reliability Investment, February 20, 2024

Learn more about how DERI can help you achieve your financial goals!

For the past six years, Dominion Energy Reliability Investment (DERI) has provided employees with the opportunity to make a direct purchase of new debt obligations of Dominion Energy.

Under this program, Dominion Energy borrows directly from investors, and, in return, they receive a competitive floating interest rate and easy access to their money. Additional benefits of investing in DERI include no maintenance fees, easy online access, and automatic savings tools. Dominion Energy employees have 10 months to reach the $1,000 investment minimum.

Since the program’s inception in 2018, over 250 employees have created an account and benefited from competitive variable rates. DERI’s total balance has grown to approximately $450 million as of February 1, 2024, and investment is open to Dominion Energy retirees, stockholders, customers, and the public (must be a citizen of the United States).

Current interest rates (effective November 6, 2023)**

5.50% for all investment balances

How do I create a DERI account?

Three ways to apply:

Dominion Energy Reliability Investment

P.O. Box 75713

Chicago, IL 60675-5713

For additional information visit the DERI website, reach out to DERI@dominionenergy.com, or call 866-876-0001.

Dominion Energy, Inc. has filed a registration statement (including a prospectus) with the United States Securities and Exchange Commission (SEC) for the offering to which this communication relates. Before you invest, you should read the prospectus that is included in that registration statement, as well as the other documents that Dominion Energy, Inc. has filed with the SEC, for more complete information about Dominion Energy, Inc. and this offering. You may get these documents for free by visiting the SEC website at www.sec.gov or the DERI website at investors.dominionenergy.com/fixed-income/dominion-energy-reliability-investment/. Alternatively, Dominion Energy, Inc. will arrange to send you a prospectus if you request it by calling toll free at 866-876-0001.