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Energy Storage for Frequency Regulation ... Alevo selected Nuvation Energy's battery management system to manage the batteries in their 2 MW /1MWh energy storage system ... A key reason they chose Nuvation Energy's 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 cannot provide. Alevo's high energy density cells had 99% availability and could be safely discharged to zero volts.  ... Today the Alevo Gridbank ESS pictured here continues to provide frequency regulation services to the PJM interconnect ... Nuvation Energy's Multi-Stack Controller provides parallel stack management and enables servicing of individual battery stacks without taking down the ESS. ... Project Details: ... 2 MW / 1MWh ... 22 stacks, 1024 V DC ... LiFePO4 cell chemistry, 320s2p ... 40-foot shipping container housing more than 7000 cells ... Frequency regulation on the PJM Energy Market ... Performed data analytics ... .

Energy Storage System Prototyping ... Nuvation Energy prototyped and built an energy storage system using second life Nissan Leaf batteries ... The batteries were no longer sufficient for powering electric vehicles ... However, at 70% state of health, they were perfect for use in stationary energy storage. ... Using the second life batteries, our team built a behind-the-meter energy storage system at Nuvation Energy’s headquarters in Silicon Valley ... There are several electric vehicle charging stations in the parking lot, where employees plug in their vehicles when they get to work ... Unfortunately, this tends to be during peak demand time, when it costs more to use electricity. ... Our second life energy storage system allows employees to charge their vehicle during peak demand times, without Nuvation Energy incurring peak usage charges ... At night, we hook the system up to the grid to charge the batteries when energy is less expensive ... In the morning when energy costs are higher, we use the system to charge employee electric vehicles off-grid. ... Check out these videos to learn more about our energy storage system or continue reading to see how this prototype has been commercialized. ... Project Details: ... 24 kWh stack, 360 V DC, 48 Nissan Leaf second life modules ... Designed site controller with load-shifting to manage demand charges ... Standard 19” rack ... Residential and commercial behind-the-meter or grid-attached ... Battery trays easy to install and service ... Installed a pair of Nuvation Energy BMS 12-channel Cell Interfaces on each tray ... .

Virtual Utility® ... e2 Companies uses Nuvation Energy’s High-Voltage Battery Management Systems for their R3Di\u00ae battery ESS + natural gas genset system ... The R3Di\u00ae power system provides near instant backup energy and is fully qualified to sustain long-duration outages ... It serves as both primary and stand-by backup power ... This installation of a 4 MW R3Di\u00ae system for a manufacturing facility in Wapakoneta, OH solves utility power quality issues by stabilizing the frequency and voltage of electricity used by the customer's manufacturing equipment ... ... Project Details: ... Battery ESS + natural gas generator provides frequency and voltage stability, resolving power quality issues from local utility. ... Demand charge management and long-duration power backup. ... No blip grid to island, instantaneous power transfer. ... e2 Companies R3Di\u00ae BESS ... Energy storage capacity: 334 kWh / unit (1002 kWh total) ... Each battery system: LiFePO4, 1000 V DC / (850 V Nominal), 334 kWh ... e2 Companies R3Di\u00ae Genset ... Power production capacity: 1 MW / unit (3 MW total) ... Each genset: 480 V, 1000 kW, 60 Hz ... Battery Management System: Nuvation Energy High-Voltage BMS ... Supports up to 1250 V DC per stack.

Energy Storage for Buildings ... Battery manufacturer Encell Technology asked Nuvation Energy to provide battery management systems and engineering services to help their customer build energy storage systems for two federal buildings in Southern California ... Nuvation Energy provided battery management systems, custom Stack Switchgear with site specific safety features, and a custom controller to interface between the BMS and PCS. ... ... Nuvation Energy’s solutions enabled Encell to deploy their 1.2 Volt Nickel-Iron (NiFe) batteries into energy storage systems that provided a range of demand charge management services ... By charging the battery system during off-peak hours and discharging during peak hours, the system reduces both demand and consumption charges ... The Encell ESS also includes an intelligent controller that adapts the charging and discharging cycle to daily use patterns and responds to curtailment requests from the utility. ... Project Details: ... Ronald Reagan Federal Building, Santa Ana, California ... 750 kW / 2.76 MWh ESS ... Six battery stacks, 320s1p, 380 A / 1200 Ah ... Encell 1.2 V 1200 Ah NiFe cells ... Six 125 kW Princeton Power GTIB-125 inverters ... Glenn Anderson Federal Building, Long Beach, California ... 500 kW / 1.85 MWh ESS ... Four battery stacks 320s1p, 380 A / 1200 Ah ... Four 125 kW Princeton Power GTIB-125 inverters.

... CBS Power Solutions selected Nuvation Energy's high-voltage battery management system for a grid energy storage system located on the island of Lifuka.  ... Lifuka, Kingdom of Tonga ... Lifuka is a 4.4 square mile island in the Kingdom of Tonga ... Previously receiving power exclusively from diesel generators, the Kingdom contracted CBS Power Solutions to deliver a renewable energy storage system that meets the government’s mandate to obtain 50% of grid power from clean energy ... CBS installed a solar + storage microgrid in Lifuka to reduce the island’s dependence on diesel generators. ... The project began in 2016 and was completed in 2017 ... Nuvation Energy installed a Nuvation Energy High-Voltage Battery Management System that would provide precise State of Charge (SOC) information to the Siemens power conversion systems (PCS) to help manage the charge and discharge process ... The BMS also provides remote access to battery performance data.  ... “The granular sharing of data between the BMS and PCS can double or even triple the life of lead batteries.” Joseph Xavier, Director of Marketing, Nuvation Energy ... Technical Specification ... The project features a solar array and 480 kW / 495 kWh of battery storage ... The lead batteries used for the project are 2V valve regulated HOPPECKE cells ... The installation of this microgrid reduced the island’s dependence on diesel generators as a primary power source by 50%. ... The Nuvation Energy BMS communicates with a pair of 300 kW Siemens inverters and an energy management system that work together to charge the battery cells from the PV array during the day and provide power to the utility grid at night. View more project details here. ... Lead batteries minimized project costs by eliminating the need for the complex fire suppression and thermal management systems often required by more volatile battery chemistries ... They provided a cost-effective solution and are recycled at end of life.  ... While lead batteries are very resilient, continual overcharging and/or over-discharging will significantly shorten their life ... A BMS provides battery module level SOC information to the PCS, enabling the PCS to precisely manage the charge and discharge process. ... This granular sharing of data between the BMS and PCS can double or triple the life of the lead batteries ... Nuvation BMS is also able to disconnect contactors if a fault condition develops that could damage the cells. ... In an ESS that contains dozens or hundreds of battery modules, the communications and safety features added by the BMS extend the life of the lead batteries to a degree that recovers the BMS cost many times over during the life of the ESS ... Additionally, maintenance personnel are provided with remote access to battery State of Health data, reducing the need for costly “check-up” service calls ... The SOH data also includes the granularity needed to identify cells and other components that may need replacement, often before an emerging issue visibly impacts the performance of the ESS. ... Read more information including Battery Innovation's full case study here..