ESS Tech, Inc. ("ESS," "ESS Inc.") ((GWH), a leading manufacturer of long-duration energy storage systems (LDES) for commercial and utility-scale applications, announced today that it will hold a conference call on Tuesday, November 7, 2023 at 5:00 p.m. EST to discuss financial results for its third quarter 2023 ended September 30, 2023.

The news release announcing the third quarter 2023 financial results will be disseminated on November 7, 2023 after the market closes.

Interested parties may join the conference call beginning at 5:00 p.m. EST on Tuesday, November 7, 2023 via telephone by calling (833) 927-1758 in the U.S., or for international callers, by calling +1 (929) 526-1599 and entering conference ID 307911. A telephone replay will be available until November 14, 2023, by dialing (866) 813-9403 in the U.S., or for international callers, +44 (204) 525-0658 with conference ID 679393. A live webcast of the conference call will be available on ESS' Investor Relations website at http://investors.essinc.com/.

A replay of the call will be available via the web at http://investors.essinc.com/.

About ESS, Inc.

At ESS (NYSE:GWH), our mission is to accelerate global decarbonization by providing safe, sustainable, long-duration energy storage that powers people, communities, and businesses with clean, renewable energy anytime and anywhere it's needed. As more renewable energy is added to the grid, long-duration energy storage is essential to providing the reliability and resiliency we need when the sun is not shining, and the wind is not blowing.

Our technology uses earth-abundant iron, salt and water to deliver environmentally safe solutions capable of providing up to 12 hours of flexible energy capacity for commercial and utility-scale energy storage applications. Established in 2011, ESS Inc. enables project developers, independent power producers, utilities and other large energy users to deploy reliable, sustainable long-duration energy storage solutions. For more information, visit www.essinc.com.

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ESS Inc. Schedules Third Quarter 2023 Financial Results Conference Call