Solar-Plus-Storage Grid Modernization Project To Use UET’s ReFlex Battery

Mukilteo, Wash.-based UniEnergy Technologies (UET) is supplying a 100 kW/400 kWh ReFlex energy storage system for a collaborative project between utility EPB and three U.S. national laboratories.

The project will identify and understand the benefits and challenges of energy storage integration with electric utilities, says UET.

UET says its ReFlex system will enable an islandable microgrid at the operations center of EPB, which serves the greater Chattanooga, Tenn., area. The system will be integrated with EPB’s 1 MW photovoltaic array and fiber communications network.

Researchers from the Oak Ridge National Laboratory, the Pacific Northwest National Laboratory and Sandia National Laboratories will provide analysis of the value streams, operational modes and optimal utilization of the solar-plus-energy storage system. The three labs will also provide technical evaluation of ramping services, islanding support and future sizing for an additional 2 MW of planned PV.

The project is part of the U.S. Department of Energy’s (DOE) Grid Modernization Initiative (GMI), led by the DOE’s Office of Electricity Delivery and Energy Reliability to help shape the future of the nation’s grid.

The EPB project is one of four energy storage projects awarded by the GMI. According to UET, the $2.5 million effort will commence this summer and continue for at least two years.

“Our vanadium flow energy storage systems partner well with solar energy because of the long life of the batteries and their ability to facilitate the integration of increasing renewable resources into the grid,” explains Blake Frye, UET’s senior vice president of global sales.


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