Vistra Energy Selects FlexGen for Innovative Energy Storage Project

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  LOS ANGELES, CA - 06/16/2018 (

FlexGen, an advanced energy storage integrator, announced today that Vistra Energy (NYSE:VST), a leading integrated power company, awarded a contract to design and integrate a 10-megawatt/42-megawatt hour FlexGen energy storage system (ESS) at Upton 2 Solar Power Plant in Texas. 

When completed in late 2018, the energy storage system, utilizing FlexGen’s Hybrid OS software, will allow Vistra to store inexpensive solar energy generated during the day and deliver it to customers during evening hours when demand is greatest, improving grid reliability.

The lithium-ion energy storage project at Upton 2 will be the largest in Texas, and the seventh largest in the United States.

“Vistra is leading our country’s transformation toward a reliable, low cost, sustainable energy mix and we’re thrilled to be supporting its storage strategy,” said Josh Prueher, FlexGen CEO. “The power grid of the future will see energy storage integrated on site with solar, wind, and gas generation, and the Upton solar plus storage project is a trailblazing example.” 

About FlexGen

FlexGen, backed by Altira Group, General Electric, and Caterpillar, designs and delivers innovative energy storage solutions to utilities, power companies, and industrial customers worldwide. FlexGen products combine proprietary software, advanced energy storage, and power conversion technologies to improve cost, reliability, quality, safety, and sustainability of electrical power systems. For more information, visit

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