Issaquah, Washington, Plans Sodium-Ion Battery System for Emergency Resilience Hub
The city of Issaquah, Washington, is moving forward with plans to install a 60 kWh sodium-ion battery system at Pickering Barn, designated as a community resilience hub. This battery will integrate with the barn's existing 64.9 kW-DC solar array, enabling the facility to power critical loads during grid outages. Emerald Battery Labs, a Seattle-based manufacturer, is developing the battery system. The project is partially supported by a $671,000 grant from TransAlta Centralia Generation LLC. This initiative is part of a phased upgrade for Pickering Barn, which previously saw the installation of heat pumps in 2025 and the solar array in 2026. The goal is to reduce energy costs, increase renewable energy use, and provide a model for other public buildings to enhance community resilience. The battery system is currently in the design phase, with certification, permitting, procurement, installation, and commissioning still required before it becomes operational.