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.

13 October 2026
San Francisco Bay Area, USA
PV Tech has been running an annual PV CellTech Conference since 2016. PV CellTech USA, on 13-14 October 2026 is our fourth PV CellTech conference dedicated to solar manufacturing in the USA. From polysilicon, wafers, ingots, cells and modules, to critical component suppliers including glass and frames, the event connects every stage of the value chain under one roof. PV CellTech USA also brings together investors, innovators, manufacturers and industry stakeholders to collaborate and strengthen domestic solar manufacturing across the United States.

Read Next

October 1, 2026
TurningPoint Energy has energised a 2.1MWac community solar project in Georgetown, Delaware, third of six in 30MWdc portfolio.
October 1, 2026
A US Senate bill proposing to speed up the permitting process for energy projects has received a mixed response from clean energy industry and advocacy groups.
September 30, 2026
Kern County has approved US independent power producer (IPP) Terra-Gen’s 600MW solar and 4GWh battery storage project near California City.
September 30, 2026
Exus Renewables North America has acquired a four-project solar portfolio totalling 715MWp from ibV Energy Partners.
September 30, 2026
US policy changes have reduced the country’s reliance on solar module imports from a number of Southeast Asian countries, writes Crux.
September 30, 2026
Solar module manufacturer Heliene has launched a new all-black solar module targeting the rooftop solar market in the US.

Upcoming Events

Solar Media Events
October 13, 2026
San Francisco Bay Area, USA
Solar Media Events
November 3, 2026
Málaga, Spain
Solar Media Events
November 24, 2026
Warsaw, Poland
Solar Media Events
February 2, 2027
London, UK