Energy Storage Systems Energy Storage Systems UL9540A Lithium-ion Battery SystemLithium-ion 34.6 kWh-parallel up to 5 MW. UL Listed, reliable, lightweight and compact UPS energy storage for critical applications Other Uninterruptible Power Supplies (UPS) 3 Phase High Power Industrial UPS Previous Generation UPS Medium Voltage UPS Energy Storage Systems 1 phase UPS 3 Phase Monolithic 3 Phase Modular