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Project Introduction
The Kingfisher Energy Storage project is a proposed Battery Energy Storage System (BESS) that will safely deliver reserve power to the local electrical grid, helping to keep the lights on for households, businesses, and critical infrastructure in King County during peak periods.
The project is designed to store power from the electrical grid (charge) when there is an excess of power being produced, and release power back to the electrical grid (discharge) when there is a shortage of power being produced. The facility will not generate any power, but only store and release power that was produced elsewhere, helping local communities avoid outages and service interruptions.
The region is increasingly at risk for grid disruptions, such as blackouts and brownouts, due to the impacts of extreme weather events in the summer and winter, increased demand for electricity resulting from the proliferation of electric vehicles, aging electrical infrastructure, and other factors.
Project development is being led by Tenaska, an independent energy company with proven expertise developing renewable generation assets and energy solutions that are enabling the clean energy transition, while meeting dynamic customer needs.
Project Status
The project is in the early stages of permitting and has begun sharing information with local stakeholders. The permitting process will include a comprehensive review of the project and multiple opportunities for public comment and engagement. Construction will begin once the permitting process is complete and electrical grid authorizations are in place.
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Project Location
The proposed project site is located near the existing Berrydale Substation, allowing close access to the transmission system. This site will allow the facility to provide maximum support and value for the electric grid, while minimizing the overall project footprint. The facility will be operationally quiet, does not generate radiation or emissions, and will have no traffic impact when operating.
Project Overview
Resources
Project Materials*
Frequently Asked Questions (updated 5.30.2023)
*Additional project materials will be added as the development process moves forward