Grid-Attached Energy Storage

Lead-Acid Energy Storage

Electric Applications chose Nuvation BMS™ to manage their 960 VDC 1 MW / 1 MWh grid-attached energy storage system. This lead-acid energy storage system was installed by City Utilities in Missouri. The system was part of a pilot project to provide additional energy to the grid during peak demand periods.

The system demonstrates various operating modes required to support City Utilities' grid operations. In load shifting mode, the battery begins a cycle at full charge. It discharges during periods of high power demand and charges during off-peak periods, to be ready for the next on-peak discharge cycle.

Electric Applications selected Nuvation Energy for the job because Nuvation BMS has a dedicated module for 12 V lead-acid monoblocs. Nuvation BMS also has the ability to provide current and voltage monitoring, as well as State of Charge (SOC) calculations, which the client was looking for.

    Grid-Attached Energy Storage

    Project Details:

    • 1 MW / 1 MWh grid-attached ESS
    • 15 stacks of 80 12 V lead-acid monoblocs
    • Installed in a City Utilities energy storage system in Missouri
    • Occupied two 40-foot containers
    • Load shifting application
    • Provided current and voltage monitoring
    • Provided SOC calculation 

    Lithium-Ion Energy Storage

    One of our clients selected Nuvation BMS™ to manage the batteries in their 2MW energy storage system. A key reason the client chose Nuvation BMS is because it can measure battery cells from 0 volts and accurately manage the charging process from 0% to 100%. Managing this charging process requires highly accurate current readings and a level of precision that most battery management systems are not designed for.

    This client's high energy density cells had 99% availability and could be safely discharged to zero volts. For this reason the client required a highly accurate BMS and chose Nuvation BMS for the job.  

    The client also required near 100% availability on the PJM market, which they were able to accomplish by utilizing Nuvation’s Grid Battery Controller (GBC). Nuvation GBC allowed the client to service individual stacks while continuing to meet the needs of the PJM market.


    Project Details:

    • 2 MW / 1MWh
    • 22 stacks, 1024 VDC
    • LiFePO4 cell chemistry, 320s2p
    • 40-foot shipping container housing more than 7000 cells
    • Frequency regulation on the PJM Energy Market
    • Performed data analytics