⚡ 15,000W Hybrid Inverter – The Sol-Ark 15K-2P delivers 15kW of continuous power with 22. 5kW peak surge capacity, perfect for whole-home backup, solar energy storage, and off-grid applications. 🔋 Expandable Battery Compatibility – Supports 48V LiFePO4, lithium, and lead-acid batteries, allowing. . The transformerless, three-phase Fronius Symo 15. The transformerless, three-phase Fronius. . This inverter is certified to meet the latest industry standards, including UL1741-2010/2018, IEEE1547a 2003/2014, FCC 15 Class B, UL1741SA, CA Rule 21, and HECO Rule 14H. T he. . The Sol-Ark 15K is an industry leading all-in-one hybrid inverter system designed for comprehensive home energy management.