ESS Inc. to Present at the Canaccord Genuity 43rd Annual Growth Conference

WILSONVILLE, Ore.--(BUSINESS WIRE)-- ESS Tech, Inc. (“ESS,” “ESS Inc.”) (NYSE:GWH), a leading global manufacturer of long-duration energy storage systems, announced today that Eric Dresselhuys, chief executive officer, and Tony Rabb, chief financial officer, will present at the Canaccord Genuity 43rd Annual Growth Conference in Boston on Wednesday, August 9 at 11:00 a.m. ET.

A live webcast of the presentation will be available on ESS’ Investor Relations website at http://investors.essinc.com/. A replay of the event 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

investors@essinc.com

Media:

Morgan Pitts

+1 503-568-0755

Morgan.Pitts@essinc.com

Source: ESS, Inc.