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Commercial 208V 3-Phase Battery Storage Systems
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 review, technology recommendations, and initial quotation provided by SES and our partners.
Modular LFP Cabinets
Indoor or NEMA 3R outdoor enclosures scale from 20 kWh to 200+ kWh. Expand capacity without re-wiring the site.
Turnkey Sol-Ark Integration
Factory-prewired battery clusters connect directly to Sol-Ark 30 kW inverters for fast installation and remote monitoring.
About Our 208V Commercial BESS Systems
208V 3-phase BESS solutions are designed for small to mid-sized commercial facilities, retail locations, and light industrial sites. These systems function as an integrated UPS with optional solar PV coupling, providing reliable backup power and a foundation for microgrid deployments. Configurations range from 20 kWh to over 480 kWh using Sol-Ark 30K inverters paired with Sol-Ark L3-HV/HVR battery cabinets or Deka Duration DD-5300 modular clusters.
For projects in California, Title 24 Building Energy Efficiency Standards now require both solar PV and battery storage on most new commercial construction and high-rise multifamily buildings. These 208V BESS packages are sized and certified to meet those requirements.
Configure and Price Your System
Sol-Ark 30K-3P-208V Hybrid Inverter
30 kW continuous output, 39 kW max PV input, 97.5% peak efficiency. UL 1741-SB and IEEE 1547-2018 certified. Supports AC/DC coupling with up to 10 units stackable to 300 kW.
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Sol-Ark L3-HV / HVR 208V Batteries
40 kWh per indoor rack (IP20) or 60 kWh per outdoor rack (IP55). LFP chemistry, 10-year / 196 MWh throughput warranty. Scale from 40 kWh to 240 kWh with 1 to 6 racks per system.
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Deka Duration DD-5300 Battery Modules
5.3 kWh LFP modules that scale from 21.2 kWh (4 modules) to 84.8 kWh (16 modules). Factory-matched HV combiner box with integrated Sol-Ark communication. Meets Title 24 minimum at the base configuration.
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Deye BOS-G40 / G60 / FH60 Battery Cabinets
40 kWh indoor (BOS-G40), 60 kWh indoor (BOS-G60), and 60 kWh outdoor IP55 rated (GE-FH60) LFP cabinets. Scale from 40 kWh to 360 kWh with 1 to 6 units per system.
View System Price RangesConfigure and Price Your BESS System Instantly
Sol-Ark, Deka, and Deye commercial storage systems with transparent wholesale pricing. No forms, no wait. See prices and request a quote instantly.
Select 208V for standard commercial or 480V for heavy industrial applications.
Compare Sol-Ark, Deka, and Deye storage by efficiency, depth of discharge, and environment.
Scale from 30 kW to 360+ kW with live pricing on Sol-Ark hybrid inverters.
Pick your storage size, review the total, and request a detailed project quote.
Commercial BESS FAQ
Do you have a battery system that meets the California Title 24 minimum storage requirement?
Yes. The Deka Duration DD-5300 starts at 21.2 kWh (4 modules), which satisfies the Title 24 minimum for new commercial construction. All systems on this page are CEC JA12 listed and UL 9540A tested for commercial deployment.
Do you offer outdoor-rated battery storage systems?
Yes. We carry the Sol-Ark L3-HVR (IP55 rated), the Deka DD-5300 in an IP66/NEMA 4 enclosure, and the Deye GE-FH60 (IP55 rated). All three are designed for outdoor installation without additional weatherproofing.
What is the difference between your 208V and 480V systems?
208V systems use the Sol-Ark 30K-3P-N inverter and are typically used in smaller commercial buildings, retail, and light industrial. 480V systems use the Sol-Ark 60K-3P-N inverter and are designed for larger facilities, industrial applications, and utility interconnections where 480V service is standard. Compare both in our interactive pricing tool.
Can I order just the inverters without battery storage?
Yes. You can configure and quote Sol-Ark commercial inverters independently using the inverter quote option on our pricing tool. We stock both the 30K (208V) and 60K (480V) models.
What is included in the quoted price?
Pricing includes the inverter(s) and battery storage hardware as configured. Sales tax and freight are excluded. Freight is quoted per project once a delivery address is provided. Installation, permitting, and electrical balance-of-system are not included.
How scalable are these systems?
Sol-Ark L3 rack systems scale from 40 kWh to 360 kWh (1 to 6 racks). Deka DD-5300 modular systems scale from 21.2 kWh to 84.8 kWh (4 to 16 modules). Deye cabinet systems scale from 40 kWh to 360 kWh depending on the model. See all configurations and pricing. For projects larger than 360 kWh, contact our engineering team.
Need a Custom BESS Configuration?
For systems larger than shown above or custom commercial projects, our engineering team can design a tailored solution for your facility.
MAPPS® Remote Industrial Solar Systems
Pad & Pole-mounted, Class 1 Div 2, Microgrid and AC/DC UPS solar battery enclosure systems available in various sizes from Solar Electric Supply.
Explore SystemsCommercial Solar Systems
SES designs and integrates utility-scale solar systems, solar farms, solar tracking systems, municipal systems, and industrial solar systems.
Explore SystemsCommercial BESS Pricing Tool
Configure 208V and 480V battery storage systems with live pricing. Select inverters, choose storage, and request a quote.
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