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U.S. Energy Secretary Charges Invinity VFB at PNNL
Invinity Energy Systems plc has announced a significant milestone with the U.S. Department of Energy's Pacific Northwest National Laboratory commencing testing of an Invinity vanadium flow battery at their new Grid Storage Launchpad facility. This testing, which will span a year under real-world conditions, is intended to provide insights into how grid-scale batteries can support the U.S. grid, with U.S. Energy Secretary Chris Wright officially initiating the program. This collaboration represents a key validation of Invinity's technology for deployment within the U.S. market. Disclaimer*
About this update from Invinity Energy Systems Plc
[{"type":"text","content":"\n\n\n \n11 December 2025\nInvinity Energy Systems plc\n \n(\"Invinity\" or the \"Company\")\n \nU.S. Energy Secretary Charges Invinity VFB at PNNL\nPacific Northwest Laboratory (PNNL) begins testing of Invinity battery at Grid Storage Launchpad (GSL) facility in Richland, Washington\n \nInvinity Energy Systems plc (AIM: IES) (OTCQX: IESVF), a leading global manufacturer of utility-grade energy storage, is pleased to announce that the U.S. Department of Energy's Pacific Northwest National Laboratory has begun testing of an Invinity battery at their new Grid Storage Launchpad.\n \n\nAbove: U.S. Energy Secretary Chris Wright starts the testing of the Invinity VFB at GSL. Watch the video (courtesy of PNNL).\n \nThis achievement represents a major milestone for the DOE's investment in advanced energy storage, with U.S. Department of Energy Secretary Chris Wright officially starting the test programme during a visit to GSL.\n \nOver the next year, Invinity's vanadium flow battery system will be subjected to an in-depth testing regime under real-world conditions by PNNL with the intention of unlocking insights into how grid-scale batteries, such as Invinity's, can help support the U.S. grid.\n \nTo find out more, read PNNL's press release in full here.\n \n \n \nVince Sprenkle, Director at Grid Storage Launchpad said:\n \n\"With this first utility-grade battery test, GSL is now fully operational as the nation's proving ground for grid-scale storage technologies. With the independent, accurate feedback developers receive from GSL's tests, they can ready their technologies for real-world applications.\"\n \nMatt Harper, President at Invinity said:\n \n\"We're very proud to be collaborating with PNNL and the GSL team on their inaugural grid-scale battery testing project. Having our battery extensively tested by PNNL's experts at this advanced facility, in support of the U.S. DOE's long duration energy storage program, is yet another important validation of our technology for deployment on the U.S. grid.\"\n \nStay up to date with news from Invinity. Join the distribution list for the Company's monthly investor newsletter here.\n \nEnquiries:\n \n\n\n\n\nInvinity Energy Systems plc\n\n\n+44 (0)20 4551 0361\n\n\n\n\nJonathan Marren, Chief Executive Officer...