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Commercial Battery Energy Storage Systems (BESS) - 208V 3-Phase
Scalable 208V battery storage systems from Sol-Ark & Deka (20–480+ kWh), optimized for peak shaving, microgrids, and Title 24 compliance.
Title 24 Compliance
Packages engineered to satisfy CEC JA12 battery sizing and UL 9540 / NFPA 855 safety requirements out-of-the-box.
System Design Assistance
System design, engineering, project review, technology recommendation, initial quotation provided by SES and our partners.
Modular LFP Cabinets
Indoor or NEMA 3R outdoor enclosures stack from 20 kWh to 200 kWh—expand capacity without re-wiring the site.
Turnkey Sol-Ark Integration
Factory-prewired battery clusters mate directly with Sol-Ark 30 kW inverters for fast installation and remote monitoring.
208 VAC Commercial Battery Energy Storage Systems
These 208 VAC Commercial Battery Energy Storage Systems are designed specifically for small to mid-sized commercial businesses and demanding off-grid industrial or remote sites, our 208V 3-phase solutions act like a powerful UPS integrated directly with your optional solar PV array. We specialize in scalable, 208 VAC storage systems ranging from 20 kWh to over 200 kWh, offering reliable backup power, and a foundation for robust microgrid capabilities. Explore our Sol-Ark and Deka based energy storage solutions below to find a cost-effective, safe and reliable solution for your storage system needs.
For our California customers, California's Title 24 Building Energy Efficiency Standards now mandate both solar PV and battery storage systems for most new commercial construction and high-rise multifamily buildings. Our BESS offerings are perfectly suited to help you meet these requirements efficiently.
208 VAC 3-Phase Commercial Battery System Building Blocks
Sol-Ark 30K-3P-208V Hybrid Inverter
30 kW 3-Φ, 39 kW PV input, 97.5 % max efficiency, UL 1741-SB / IEEE 1547-2018, stackable to 300 kW.
Sol-Ark 30K-3P-208V Datasheet
Sol-Ark L3-HV / HVR Batteries
LFP chemistry, 36.9–55.3 kWh usable per rack, 10-yr / 196 MWh warranty, indoor (IP20) or outdoor (IP55) enclosures.
Sol-Ark L3-HV / HVR Battery Datasheet
Deka Duration DD5300 Modules
5.3 kWh LFP modules, scalable, factory-matched HV combiner box and Sol-Ark communication loop.
Deka Duration DD5300 Datasheet
Sol-Ark L3-HV 208 VAC Indoor Battery Storage System Configurations
Our Sol-Ark L3-HV indoor BESS systems scale from 40 kWh to 320 kWh using 1 to 8 modular LFP battery cabinets paired with Sol-Ark 30K inverters (single or dual). With support for up to 78 kW of PV input, integrated AC/DC coupling, IP20 indoor-rated enclosures, and automatic BMS configuration, the L3-HV delivers efficient, compact, and scalable storage—ready for fast deployment and long-term reliability.
Battery: Sol-Ark L3-HV-40KWH
Inverter: Sol-Ark 30K (30kW)
Cabinets: 1
Battery: Sol-Ark L3-HV-40KWH
Inverter: Sol-Ark 30K (30kW)
Cabinets: 3
Battery: Sol-Ark L3-HV-40KWH
Inverter: 2 x Sol-Ark 30K (30kW)
Cabinets: 8
Sol-Ark L3-HVR 208 VAC Outdoor Battery Storage System Configurations
Our Sol-Ark L3-HVR outdoor BESS systems scale from 60 kWh to 480 kWh using 1 to 8 high-voltage LFP battery cabinets paired with single, dual, or triple Sol-Ark 30K inverters. Built for rugged environments, each IP55-rated enclosure integrates AC/DC coupling, transfer relays, and optional fire suppression. With support for up to 117 kW of PV input and configurations reaching 90 kW inverter capacity, the L3-HVR is ideal for peak shaving, EV integration, and outdoor commercial storage applications.
Battery: Sol-Ark L3-HVR-60KWH
Inverter: Sol-Ark 30K-3P-208V
Cabinets: 1
Battery: Sol-Ark L3-HVR-60KWH
Inverter: Sol-Ark 30K (30kW)
Cabinets: 3
Battery: Sol-Ark L3-HVR-60KWH
Inverter: 3 x Sol-Ark 30K (30kW)
Cabinets: 8
Deka Duration DD5300 208 VAC Indoor Battery Storage System Configurations
These Deka DD5300-based indoor BESS solutions pair Sol-Ark 30K inverters with scalable LFP battery module clusters ranging from 21.2 kWh to 127.2 kWh per system. Built around 5.3 kWh modules and integrated high-voltage control hardware, these 208V configurations support single, dual, or multi-cluster designs—including HV hub support for larger builds.
Battery: Deka DD-5300 (4 Modules)
Inverter: Sol-Ark 30K (30kW)
Cluster: Single
Battery: Deka DD-5300 (12 Modules)
Inverter: Sol-Ark 30K (30kW)
Cluster: Dual
Battery: Deka DD-5300 (24 Modules)
Inverter: Sol-Ark 30K (30kW)
Cluster: Multi (Requires HV Hub)
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