Enlight Advances US$3 Billion, 1.2GW Solar 4GWh BESS ‘Complex’ in Arizona

Why It Matters

The complex demonstrates the scale of U.S. solar‑plus‑storage integration and highlights how policy shifts around foreign‑sourced battery components create both short‑term opportunities and long‑term supply‑chain pressures for the renewable sector.

Key Takeaways

• $3 bn project cost, $1.6 bn net after tax credits
• 1 GWac interconnection, 20‑year contracts with SRP
• Safe‑harbour status shields Chinese supply chain until 2029
• Phase‑1 commercial ops expected late 2027
• Arizona pipeline adds Snowflake A, Roadrunner projects

Pulse Analysis

Enlight Renewable Energy’s CO Bar Complex marks one of the United States’ largest solar‑plus‑storage installations, combining 1.21 GW of photovoltaic capacity with 4 GWh of battery storage across five distinct stages. The development, located in Arizona’s sun‑rich desert, represents an investment of roughly $3 billion, of which about $1.6 billion is net after federal tax incentives. With a 1 GWac interconnection agreement and long‑term bus‑bar contracts secured with Salt River Project, the project is positioned to deliver up to $278 million in annual electricity sales once fully operational.

The timing of CO Bar’s progress coincides with a shifting regulatory landscape. The 2023 “One Big, Beautiful Bill Act” extends battery tax credits through 2033 but introduces Foreign Entity of Concern (FEOC) thresholds that will rise to 75 % by 2029, limiting reliance on Chinese‑sourced components. Enlight’s safe‑harbour status, granted for projects already under construction, allows it to continue using existing Chinese supply contracts until the next compliance window. This short‑term exemption creates a window of opportunity for developers who have already locked in supply chains, while signaling a longer‑term push toward domestic battery manufacturing.

Financing for the complex underscores the growing appetite for large‑scale renewable infrastructure. A $1.44 billion debt facility for the adjacent Snowflake A project and a $340 million tax‑equity partnership for the Roadrunner solar‑storage venture illustrate how investors are bundling capital across multiple Arizona assets. As construction ramps up on stages three through five, the complex is slated for phased commercial operation between late 2027 and mid‑2028, reinforcing Arizona’s emergence as a renewable energy hub. The combined output will bolster grid reliability, support utility decarbonization goals, and set a benchmark for future U.S. solar‑plus‑storage projects.