Battery storage system being tested at solar project site

Arizona Public Service Co. (APS) has begun testing a new 1.5 MWh energy storage system at the 500 kW Doney Park solar power plant in Arizona.

The company plans to run the pilot for two years at a substation near the site using a lithium-ion battery manufactured by Electrovaya Inc. At a later date, the system will be used at a nearby redisential-scale solar power plant.

The system is expected to help reduce the intermittency of solar and help get more renewables to the grid. The utility also plans to test dispatching the solar energy after dark.

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