ESS Inc. to Present at the Deutsche Bank 2024 Global Solar & Clean Tech Conference and the TD Cowen 2nd Annual Sustainability Week

ESS Tech, Inc. (“ESS,” “ESS Inc.”) (NYSE:GWH), a leading manufacturer of long-duration energy storage systems (LDES) for commercial and utility-scale applications, announced today that ESS management will present at upcoming investor conferences in May.

• Eric Dresselhuys, chief executive officer, and Tony Rabb, chief financial officer, will present virtually at the Deutsche Bank 2024 Global Solar & Clean Tech Conference on Thursday, May 16 at 11:30 a.m. ET.

• Eric Dresselhuys, chief executive officer, and Tony Rabb, chief financial officer, will present virtually at the TD Cowen 2nd Annual Sustainability Week on Tuesday, May 21 at 12:25 p.m. ET.

A live webcast of the presentations will be available on ESS’ Investor Relations website at http://investors.essinc.com/. A replay of the events 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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Investors: Erik Bylin [e-mail]

Media: Morgan Pitts 503.568.0755 [e-mail]