FlexGen to build largest energy storage system in Texas co-located with solar

Facebook
Twitter
LinkedIn
Reddit
Email

Texas IPP Vistra Energy has contracted energy storage integrator FlexGen to install a 10MW / 42MWh energy storage system (ESS) at the 180MW Upton 2 Solar Power Plant in Texas.   

The lithium-ion storage system, which uses FlexGen’s Hybrid OS software, will be completed in late 2018. It will be the largest storage project in Texas and the seventh largest in the US.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

“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.”

FlexGen is backed by Altira Group, General Electric (GE) and Caterpillar. Its storage system will be used to store solar power generated during the day and deliver it to customers during evening hours when demand is greatest, improving grid reliability.

Read Next

November 12, 2026
Terra-Gen completes PV park in California, Duke Energy Florida plans four new solar arrays, and Altus Power acquires another 92 projects.
November 12, 2026
NAED Energy has unveiled PV-1 PECVD-V, a vertical in-line deposition platform designed for high-volume tandem solar cell production.
Premium
November 11, 2026
A boom in the satellite business is creating new opportunities for terrestrial PV manufacturers in space, writes Catherine Early.
November 10, 2026
Module manufacturer Heliene and perovskite solar company Caelux have started commercial-scale production of a hybrid-tandem solar module for the US market.
November 10, 2026
Qcells has passed all evaluation categories in module reliability tests conducted by Kiwa PVEL and the Renewable Energy Test Center (RETC) for US-made solar modules.
November 10, 2026
Proposed legislation that could unlock gigawatts of solar is progressing through the US Congress but faces increased resistance from campaign groups concerned it undermines environmental protections.

Upcoming Events

Solar Media Events
November 24, 2026
Warsaw, Poland
Solar Media Events
February 2, 2027
London, UK
Solar Media Events
April 20, 2027
Istanbul, Türkiye