Vistra Announces Expansion of Previously Announced Oakland Battery Energy Storage Facility

Planned urban battery storage system capacity to increase by more than 80 percent

OAKLAND, CA — April 15, 2020 — Vistra (NYSE: VST) today announced that it is increasing the size of its battery energy storage project located at the site of its Oakland Power Plant. The battery will now have a capacity of 36.25 megawatts/145 megawatt-hours instead of the previously announced capacity of 20 MW/80 MWh. Vistra anticipates the battery storage project will enter commercial operations by January 2022.

The project has received necessary approvals from East Bay Community Energy (EBCE), a Community Choice Energy provider, and from Pacific Gas and Electric (PG&E). EBCE approved an amended contract to receive the larger resource adequacy capacity from the project, while PG&E approved a new Local Area Reliability Service Agreement to ensure grid reliability as part of the Oakland Clean Energy Initiative. PG&E is awaiting approval from the California Public Utilities Commission (CPUC).

“We are excited to build on our original partnership with East Bay Community Energy and PG&E,” said Curt Morgan, president and CEO of Vistra. “We believe battery energy storage will play an increasingly key role in the reliability of the electric system, and this project represents a shining example of that view. Vistra is proud to be able to provide clean energy to the residents of Oakland while, at the same time, helping the city meet its sustainability goals.”

East Bay Community Energy CEO Nick Chaset said, “Adding an additional 16.25 MW of battery storage capacity in downtown Oakland is a win for EBCE, our customers, reliability of the electric grid, and local air quality. We’re pleased to participate in clean energy developments that help us meet our resource adequacy obligations while creating local benefits for the communities we serve.”

Vistra plans to eventually retire the existing units at Oakland Power Plant and develop additional energy storage projects on the site in the future.

Vistra is a market leader in utility-scale battery development: its 10-MW/42-MWh Upton 2 Battery Storage Facility came online in December 2018 and is the largest in Texas, while its 300-MW/1,200- MWh Moss Landing battery project is currently under construction in California and slated to be complete later this year. When the Moss Landing battery storage system comes online, it will be the largest battery of its kind in the world.

About Vistra

Vistra (NYSE: VST) is a premier, integrated, Fortune 350 energy company based in Irving, Texas, providing essential resources for customers, commerce, and communities. Vistra combines an innovative, customer-centric approach to retail with safe, reliable, diverse, and efficient power generation. The company brings its products and services to market in 20 states and the District of Columbia, including six of the seven competitive markets in the U.S. and markets in Canada and Japan, as well. Serving nearly 5 million residential, commercial, and industrial retail customers with electricity and natural gas, Vistra is the largest competitive residential electricity provider in the country and offers over 40 renewable energy plans. The company is also the largest competitive power generator in the U.S. with a capacity of approximately 39,000 megawatts powered by a diverse portfolio, including natural gas, nuclear, solar, and battery energy storage facilities. In addition, the company is a large purchaser of wind power. The company is currently constructing a 300-MW/1,200- MWh battery energy storage system in Moss Landing, California, which will be the largest of its kind in the world when it comes online. Vistra is guided by four core principles: we do business the right way, we work as a team, we compete to win, and we care about our stakeholders, including our customers, our communities where we work and live, our employees, and our investors. Learn more about Vistra’s environmental, social, and governance efforts and read the company’s sustainability report at https://www.vistraenergy.com/sustainability/.

About East Bay Community Energy (EBCE)

EBCE is a not-for-profit public agency that operates a Community Choice Energy program for Alameda County and eleven incorporated cities, serving more than 550,000 residential and commercial customers throughout the county. EBCE initiated service in June 2018 and will expand to the cities of Pleasanton, Newark, and Tracy in 2021. As one of 19 community choice aggregation (CCA) programs operating in California, EBCE is part of the movement to expedite the climate action goals of their communities and those of California. EBCE is committed to providing clean power at competitive rates while reinvesting in our local communities. For more information about East Bay Community Energy, visit https://ebce.org/.

MEDIA

Meranda Cohn
Media.Relations@vistraenergy.com
214-875-8004

Dan Lieberman
dlieberman@ebce.org
925-579-1591