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

June 21, 2018
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

March 19, 2026
The California Senate Energy, Utilities and Communications Committee has unanimously voted 14-0 (and 3 abstentions) in favour of a bill for balcony solar.
March 19, 2026
US solar developer Avantus and Toyota Tsusho America (TAI) have completed construction at the 159MW Norton Solar Project in Texas.
March 19, 2026
There is “an emerging and significant compliance risk” for US solar manufacturers and buyers around the origin of solar wafers, according to new analysis from law firm Wiley Rein.
March 19, 2026
PV manufacturer Canadian Solar’s first US-made solar cells are expected to be produced by the end of March in Jeffersonville, Indiana.
March 19, 2026
Sunraycer Renewables has broken ground at a portfolio of three solar-plus-storage projects in the US state of Texas.
March 18, 2026
Origis Energy has commenced operations at its 210MWdc Wheatland utility-scale solar project in Knox County, Indiana.

Upcoming Events

Solar Media Events
March 24, 2026
Dallas, Texas
Solar Media Events
April 15, 2026
Milan, Italy
Solar Media Events
June 16, 2026
Napa, USA
Solar Media Events
October 13, 2026
San Francisco Bay Area, USA
Solar Media Events
November 3, 2026
Málaga, Spain