Fluence Energy, Inc. announced it will supply its advanced Gridstack Pro™ energy storage solution for the Pioneer Clean Energy Center.
The project, located in Yuma County, Arizona, is being developed by BrightNight, a leading next-generation power and digital infrastructure company, and its joint venture partner, Cordelio Power, an independent power producer operating across the United States and Canada.
The Pioneer Clean Energy Center pairs a 300 MW ac solar facility with a 300 MW / 1,200 MWh battery energy storage system to provide firm, on-demand capacity to support Arizona’s fast-growing electricity needs. Operating under a long-term tolling agreement, the facility is expected to significantly bolster local grid reliability and help mitigate peak demand challenges within the regional load pocket.
“Pioneer will deliver reliable, dispatchable clean power that Arizona needs to support its rapid growth,” said Martin Hermann, Chief Executive Officer, BrightNight. “This project demonstrates how large-scale renewables paired with advanced storage can provide firm capacity and real grid resilience. We are pleased to work with partners who share our commitment to building the next generation of energy infrastructure.”
Fluence’s Gridstack Pro solution will incorporate U.S.-manufactured cells, modules, enclosures, and thermal management systems, supporting the advancement of domestically produced energy storage technology while strengthening American energy security.
“We first put storage on the U.S. grid to meet exactly the kind of reliability needs Arizona is facing, and we have since proven that it can be delivered at massive scale,” said John Zahurancik, Chief Customer Success Officer, Fluence. “We are proud to partner on this project, demonstrating that U.S.-made battery systems can meet critical power needs reliably and cost-effectively.”
Full on-site construction is currently underway, with commercial operation expected by April 2027.

