Snohomish County Public Utility District (SNOPUD) and 1Energy Systems will partner to develop and deploy an innovative approach to energy storage, aimed at helping electric utilities increase their use of renewable energy and improve overall reliability. The MESA-1 installation will be the first energy storage system built on the Modular Energy Storage Architecture (MESA), an innovative approach to energy storage based on open, non-proprietary industry standards.

Two battery systems will be installed for the system: MESA 1a utilize a Parker Hannifin Power Conversion System and a Mitsubishi 1 MW (500 kWh) Li-Ion battery.

Alstom Grid and faculty from the University of Washington will join the project to collaborate on research, analysis and design of technology interfaces. 1Energy will lead the selection of future MESA partners who will provide batteries, power conversion and balance-of-system components.

Lithium-ion Battery