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BrightNight, Cordelio Power Announce Financial Close on 800 MWh BESS Project in US

BrightNight and Cordelio Power have closed financing on the 200 MW/800 MWh Greenwater battery energy storage project in Pierce County, Washington.

December 04, 2025. By Mrinmoy Dey

BrightNight together with its joint venture partner, Cordelio Power, have announced the successful financial close of its Greenwater Energy Storage Project (Greenwater), a 200 MW/800 MWh battery energy storage system (BESS) located in Pierce County, Washington.

The project will provide firm capacity and grid services to Puget Sound Energy (PSE), strengthening regional reliability and supporting Washington's clean energy transition, the company said in a statement.

Martin Hermann, CEO of BrightNight, said, “Greenwater represents a major step forward for modernising and hardening the grid in the Pacific Northwest. This project demonstrates how storage, digital innovation, and trusted partnerships can deliver dependable clean energy at scale. With our proprietary PowerAlpha platform, integrated development-to-operation capabilities, and a growing pipeline in the Pacific Northwest, we are delivering best-in-class storage solutions that meet the grid's evolving demands with efficiency and scale.”

Chris Hind, CEO of Cordelio Power, added, “Greenwater is a strong example of how BrightNight and Cordelio Power are partnering to advance reliable, clean energy solutions that strengthen the grid and support the transition to a low-carbon future. This project highlights the critical role that battery storage plays in enabling renewable integration across the Pacific Northwest.”

Craig Pospisil, VP of Business Development and M&A at Puget Sound Energy, remarked, “Battery storage projects like Greenwater help us harness renewable energy and meet our clean energy goals while helping to meet peak demand. This is critical to how we serve our customers now and in the future.”

With total project financing approaching USD 400 million from leading banks including Royal Bank of Canada, Credit Agricole Corporate and Investment Bank, CoBank, ACB, National Bank of Canada, Fédération des caisses Desjardins du Québec, and Zions Bancorporation, N.A., Greenwater now moves into full-scale development and execution.

The Greenwater project is a lithium-ion battery energy storage system connecting to the grid via short tie line to the existing White River Substation intended to deliver reliable and flexible capacity to enhance grid stability and support renewable integration. The project minimises environmental impact, requires no operational water, and aligns with regional clean energy and resource adequacy goals.

Development activities are underway, and construction and commissioning are scheduled to align with the project's targeted commercial operation date in 2026, it said.

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Greenwater Energy Storage Project

BESS Projects in US