800 MWh battery project reaches financial close for BrightNight and Cordelio Power in Washington, US

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

The project will provide firm capacity and grid services to the utility Puget Sound Energy (PSE), which serves 1.2 million electric customers in the region. It will grid-tie via the White River Substation, located in the wider Seattle-Tacoma region, targeting an operational date in 2026.

Project financing was said to “approach $400 million” with banks including the 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.

In the project announcement, the companies sttated the project “minimizes environmental impact, requires no operational water, and aligns with regional clean energy and resource adequacy goals.”

CEO of BrightNight, Martin Hermann, referenced the company’s PowerAlpha platform as being part of the delivery to design, optimize, and operate the plant, via AI, data, and cloud computing.

“Greenwater represents a major step forward for modernizing 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,” said Hermann. “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.”

“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,” added Craig Pospisil, VP of Business Development and M&A at Puget Sound Energy.