Commercial and Industrial Energy Storage Systems (C&I ESS)
Looking for 100kWh to 500kWh C&I energy storage systems? EverRay supplies commercial and industrial battery storage cabinets across the 100–500 kWh range — plus containerized systems up to 1.72 MWh — for factories, cold storage, warehouses, commercial buildings, hotels, hospitals and solar plants. Every cabinet uses Grade-A LiFePO4 cells with liquid or smart air cooling, integrated BMS and EMS, and 10-year battery warranty. EverRay handles system design, tender documentation and DDP shipping to Europe, Africa, the Middle East, Latin America and Southeast Asia — engineered around your load profile, not a single plant’s catalogue.
Where we have already delivered C&I storage
Regional references: 1 MW / 748.9 kWh in the Maldives, 100 kW / 385 kWh in the Philippines, and 125 kW to 1 MW commercial and industrial systems across Bulgaria and Romania — all delivered in 2025–2026. Commissioning reports and client contacts are available on request.
Two cabinet platforms anchor the range: an air-conditioner-cooled integrated cabinet that scales from 96 kWh to 265 kWh in one body, and a liquid-cooled series for high-ambient, heavy-cycling sites — both built on Grade-A 314 Ah LiFePO4 prismatic cells with integrated BMS and EMS.
100–500 kWh C&I Energy Storage Cabinets — Built for Peak Shaving and Demand Charge Reduction
Most commercial and industrial storage projects land between 100 kWh and 500 kWh of usable capacity. That range covers a single retail or restaurant site at the low end, a factory or cold-storage warehouse at the high end. Our cabinets are sized to sit inside it, then parallel outward when your load grows. Battery pricing at cabinet scale is explained in our $/kWh wholesale guide.
How the saving actually appears on the bill — the 15- or 30-minute demand window, why PV alone misses the evening peak, and a worked 30 kW / 64 kWh case — is set out in our guide to peak shaving with battery storage.
| Series | Capacity | Power | Cooling | Form Factor |
|---|---|---|---|---|
| Cabinet ESS | 100 – 261 kWh | 30 – 100 kW | Smart air cooling | Indoor / outdoor cabinet, fast on-site installation |
| Liquid-Cooled ESS | 261 kWh (215 kWh on request) | 100 – 125 kW | Liquid cooling | Compact IP66 cabinet, high energy density |
| Parallel Expansion | 300 / 400 / 500 kWh | 200 – 500 kW | Liquid cooling | 2 – 4 cabinets paralleled on one EMS, single point of control |
| 20 ft Container | up to 642 kWh | up to 250 kW | Liquid / air options | Standard 20 ft container, transport-ready, plug-and-play |
| 40 ft Container | up to 1.72 MWh | up to 500 kW | Liquid cooling | Utility-scale plant building block, 500 MW / 1 GWh proven |
| Platform | Capacity | Power | Cooling | Enclosure |
|---|---|---|---|---|
| NST integrated cabinet (air-cooled) | 96.5 – 265 kWh (4–11 modules) | 125 kW PCS pairing | Industrial AC + fan | IP54, 1271×1530×2120 mm |
| BSC outdoor cabinet (hybrid) | 112.5 kWh + 50kW inverter built in | 50 kW | Smart air cooling | Outdoor cabinet, plug-and-play |
Sizing note: for cabinets above 100 kWh we recommend liquid cooling. Air-cooled units are still widely sold, but in hot or humid climates their cycle life degrades noticeably faster — in tropical projects we have seen 25–40% shorter service life compared with liquid-cooled equivalents.
MOQ, Lead Time and Ordering
| Item | Minimum Order | Lead Time |
|---|---|---|
| C&I energy storage — cabinets and containerized systems | 1 set | 1–2 weeks |
One cabinet is the minimum order, and systems parallel outward from there. Lead time is 1–2 weeks for standard cabinet configurations; for multi-cabinet and containerized projects the delivery schedule is confirmed at quotation. OEM branding and site-specific configurations are quoted on request.
What a 100–500 kWh System Delivers
- Demand charge reduction — shave peaks and cut monthly demand charges by 20–30% on typical industrial tariffs.
- Solar firming — store midday solar surplus and dispatch it across the evening shift.
- Backup power — keep production lines, cold chain and server rooms running through grid outages, with sub-20 ms switchover.
- Peak-valley arbitrage — charge at off-peak tariffs, discharge at peak where time-of-use pricing applies.
- EV charging support — buffer fast-charger demand spikes without triggering a utility demand-charge penalty or a costly service upgrade.
- Grid services ready — support frequency response and demand response programs where available.
261kWh Energy Storage Cabinet — Modular High-Voltage C&I BESS
Our best-selling C&I cabinet is a modular high-voltage system built from 76.8V / 314 Ah / 24.12 kWh LiFePO4 modules. Four to eleven modules stack inside one IP54 integrated cabinet, so the same body serves projects from 96 kWh to 265 kWh — the 10-module (241 kWh) and 11-module (265 kWh) configurations are what we quote as the 261kWh energy storage cabinet class. Paired with a 125 kW PCS it forms a complete all-in-one C&I solution.
| Cell chemistry | LiFePO4 prismatic, 314 Ah |
|---|---|
| Module energy / voltage | 24.12 kWh / 76.8 V (440×1063×242 mm, 177 kg) |
| System configurations | 4–11 modules: 96.46 / 120.58 / 144.69 / 168.81 / 192.92 / 217.04 / 241.15 / 265.27 kWh nominal (90% DOD usable) |
| System voltage | 307.2 – 844.8 V nominal (278.4–950.4 V operating) |
| Charge / discharge current | 160 A recommended, 200 A max |
| Cooling | Industrial air conditioner + fan, -20 to +60 °C operation |
| Enclosure | IP54 integrated cabinet, 1271×1530×2120 mm, 1073–2312 kg by configuration |
| Cycle life / warranty | ≥8,000 cycles, 5+5-year warranty (10-year design) |
| Communication | CAN / RS485, built-in Wi-Fi remote monitoring (CN/EN app) |
| Certification | CE, UN38.3, MSDS |
100kWh Commercial Battery Storage — The 50kW All-in-One Cabinet
For sites that land at the smaller end of C&I storage — retail, restaurants, fuel stations, small workshops — our 50kW / 112.5kWh outdoor cabinet is the workhorse. A 50kW three-phase hybrid inverter (4 MPPT, 150–850V, 1000V max PV, 97.8% max efficiency) and 112.5 kWh of 358.4V LiFePO4 (7× 48314H modules, 150 A max charge/discharge) ship pre-integrated in one cabinet: hang the PV strings, land the grid cable and the system is commissioning-ready.
| Rated AC power | 50 kW (3/N/PE 230/400 V, 50/60 Hz) |
|---|---|
| Battery capacity | 112.5 kWh LiFePO4, 358.4 V nominal (336–392 V) |
| Inverter MPPT | 4 MPPT, 150–850 V, max PV 1000 VDC, 40 A×4 input |
| Cycle life / design life | >8,000 cycles @25 °C, 10 years+ design life |
| Environment | Charge 0–50 °C, discharge -10–50 °C, altitude up to 4000 m |
Typical sizing: one 112.5 kWh cabinet covers a 100 kWh-class daily peak-shaving duty; two cabinets parallel to 225 kWh on the same EMS when the load grows. Read our guide on how to size a hybrid inverter and battery bank for the load-calculation method.
Liquid-Cooled Battery Energy Storage Cabinet — EVR-ESS-261
Above 100 kWh in hot or humid climates we recommend the liquid-cooled EVR-ESS-261 cabinet: 261 kWh of LiFePO4 storage (five 52.249 kWh battery modules, 1P260S, 832 VDC rated) with an integrated 125 kW PCS, EMS, chiller and fire protection in one IP66 outdoor body. Liquid cooling holds cell ΔT within a few degrees, which is why the cycle life holds up in tropical duty where air-cooled units age 25–40% faster. Cabinets run standalone or in parallel for capacity expansion, and every system reports to the EverRay ESS Cloud over Wi-Fi, 4G/5G or LAN for unattended operation.
| Battery configuration | 261 kWh, 1P260S, 832 VDC rated / 728–910 VDC range |
|---|---|
| PCS (grid-tied) | 125 kW rated / 138 kW max, 200 A, 230/400 V, 50/60 Hz, max efficiency 98.5% |
| PCS (off-grid) | 125 kW / 138 kVA, <3% THD (linear load), 110% long-term overload |
| Cooling / protection | Liquid cooling (50% ethylene glycol), IP66, –30 to +55 °C |
| Communication | RS485 / CAN / Ethernet; EverRay ESS Cloud monitoring |
| Size / weight | 1320×1005×2200 mm, 2465.5 kg (2589 kg gross) |
| Certification | Cell: UN38.3 / IEC / UL · Rack: UN38.3 / IEC / CE |
30kW Class — Hybrid Inverter + HV Rack Package
Between home storage and containerized BESS sits our 30 kW package: a Deye SUN-30K-SG02HP3-EU-AM3 three-phase hybrid inverter (3 MPPT, 98.5% max efficiency, 10-unit parallel) with 204.8V / 314 Ah HV rack batteries (four 51.2V modules in series, 64.3 kWh actual) from 64 kWh to 225 kWh (≥10,000 cycles, 5+5-year warranty). The same 64 kWh starter configuration is the entry point most small factories choose first.
Sizing the inverter on its own? The 30kW three-phase hybrid inverter and the 50kW three-phase hybrid inverter pages carry full specifications, battery-sizing arithmetic and generator-integration notes.
For sizing arithmetic and payback by site type, see our 30kW / 64kWh energy storage system guide — it works through a small factory, a hotel and a resort with real numbers.
Containerized Battery Storage — 20ft to 1MWh+
When the project outgrows cabinets, our containerized battery storage systems ship as standard 20 ft units up to 642 kWh / 250 kW (liquid or air cooling options) and 40 ft units up to 1.72 MWh / 500 kW liquid-cooled — the same building blocks proven in a 500 MW / 1 GWh utility installation in Colombia. Containers arrive transport-ready with PCS, fire suppression, HVAC and EMS pre-integrated; parallel multiple units for 1 MWh, 2 MWh and larger plants. For the full purchasing path — container formats, transport, offloading, commissioning and warranty — read our containerized battery energy storage system guide.
Engineering Highlights
- Grade-A LiFePO4 cells — prismatic cells only, no refurbished or second-life product; 6,000–8,000 cycles and a 10-year battery warranty on the C&I series.
- UL9540 / IEC 62619 engineered liquid-cooled series — cell-level safety design with integrated aerosol or gas fire suppression, tested to UL 9540A protocols.
- Multi-layer BMS protection — cell, module and rack level protection against overcharge, over-discharge, short circuit, thermal runaway and arc fault.
- Intelligent EMS — built-in energy management with remote monitoring, scheduling, multi-mode strategies and RS485 / CAN / Modbus TCP interfaces for third-party PCS and platforms.
- Grid-code flexibility — configurable for different national grid codes, MV transformer connection and on/off-grid switching.
- Scalable architecture — cabinets parallel to multi-MWh plants; containerized systems verified in a 500 MW / 1 GWh project.
Our liquid-cooled series is engineered to UL9540 / UL9540A and IEC 62619 requirements — certificate copies and the full compliance matrix are available on request for tender submissions (see our certifications page).
Shipping into the European Union? Read our EU Battery Regulation (EU) 2023/1542 compliance guide for solar importers — it covers CE marking, the carbon-footprint declaration and due-diligence timelines that apply to battery shipments from 2026 onward.
Proven at Scale
Our largest reference is a 500 MW / 1 GWh energy storage project in Colombia. Additional C&I deployments span Europe, Africa, the Middle East, Latin America and Southeast Asia — from factory peak-shaving cabinets to island microgrids. Project references and reference letters are available on request during the tender stage.
Inside the Factory: High-Voltage Stackable Battery Assembly
Watch the real production line behind our 16–257 kWh high-voltage LiFePO4 battery cabinets — from module assembly to control panel testing and final system integration.
Have a project in mind? Talk to our C&I storage engineers — or watch more on our YouTube channel.
Frequently Asked Questions
How do I choose between a 100 kWh, 200 kWh and 500 kWh cabinet?
Size on your load profile first, not on a round number. We take your maximum demand (kW), your peak-shaving window (hours) and your daily cycling pattern, then calculate usable capacity with depth-of-discharge and efficiency losses included. As a rule of thumb: retail and restaurant sites land at 100–150 kWh, offices and small industrial loads at 200–261 kWh, and factories or cold-storage warehouses at 400–500 kWh. Send your electricity bill and one week of load data and we will confirm the size before you commit.
What is inside the 261kWh energy storage cabinet?
Ten or eleven 76.8V / 314Ah / 24.12kWh LiFePO4 modules (241–265 kWh nominal) in one IP54 integrated cabinet with industrial air-conditioner cooling, integrated BCS/BCU control, CAN/RS485 communication and built-in Wi-Fi monitoring. It delivers 160A recommended (200A max) charge/discharge, ≥8,000 cycles and a 5+5-year warranty, and pairs with a 125kW PCS for a complete all-in-one system.
Do you offer a liquid-cooled 261kWh cabinet?
Yes — the EVR-ESS-261 is our liquid-cooled flagship: 261 kWh (five 52.249 kWh modules, 832 VDC) with a built-in 125 kW / 138 kW PCS in one IP66 outdoor cabinet rated –30 to +55 °C. It reaches 98.5% maximum efficiency, measures 1320×1005×2200 mm and 2465.5 kg, and reports to the EverRay ESS Cloud for unattended operation. Single cabinets run independently and multiple units parallel for larger capacity.
Is a 100kWh commercial battery storage system enough for my building?
For most retail, restaurant and small-office sites, yes: our 50kW / 112.5kWh all-in-one cabinet covers a 100 kWh-class peak-shaving duty and parallels to 225 kWh when the load grows. The reliable answer comes from your load profile — send your electricity bill and one week of interval data and we will size it with DOD and efficiency losses included before you commit.
Who builds EverRay systems?
EverRay is a brand built on an integrated manufacturing and trading model: our own engineering, pre-shipment quality control and order consolidation, with production across 20+ audited partner plants in China. We are not tied to one plant, so we match the right cell chemistry, PCS and enclosure to your project instead of quoting a single factory’s catalog. That breadth is also why lead times hold when a single factory is full. Every system ships under the EverRay name, with Grade-A cells and full traceability documentation.
Can you support tender and EPC projects?
Yes. We regularly support distributors, EPC contractors and project developers with system design, technical documentation, compliance matrices and tender-grade quotations. If you need country-specific certificates, fire-test reports or a signed compliance matrix before bidding, tell us the project country and we will prepare the document pack.
What grid codes can you configure?
Our EMS and inverter interfaces can be configured for different national grid codes. Share your grid-connection requirements and we will confirm compatibility before quotation.
What is the delivery scope and lead time?
From battery cabinets and containers to EMS, transformers and full container integration — supply scope is flexible, from core equipment to turnkey system packages. Standard cabinets typically ship in 1–2 weeks; containerized systems depend on configuration. We handle export documentation and DDP shipping for containerized and rack systems. Still comparing capacity bands and budget? Our C&I energy storage system sizing and cost breakdown walks through typical 100kWh to 500kWh projects line by line.
Start Your C&I Storage Project
Send us your load profile, tariff structure and project timeline — our engineering team will deliver a system proposal with ROI analysis within 48 hours. If you are still at the sizing stage, our guide on how to size a hybrid inverter and battery bank explains the load calculation, or read how to choose the right LiFePO4 storage battery for cell chemistry and cycle-life selection. For commercial and industrial projects specifically, start with our guide on how to choose a C&I energy storage system — it covers load profiling, tariff analysis and the sizing steps in the order they should be done.
Request a Proposal → | WhatsApp: +86 183-5694-3951 | Email: info@everraysolar.com
Buyer’s guides: Solar battery wholesale price 2026 · Peak shaving with battery storage · 48V vs high voltage battery · Become a solar distributor
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