Brief introduction

EPES233/261L Outdoor Liquid Cooled Energy Storage Cabinets: High-Performance C&I Energy Solutions

Meta Description: EP Energy’s EPES233/261L outdoor liquid cooled energy storage cabinets deliver 105kW/233kWh & 125kW/261kWh for C&I peak shaving, energy arbitrage & PV self-consumption—UL9540A certified, IP55, >8000 cycles.

EP Energy’s EPES233/261L Outdoor Liquid Cooled Energy Storage Cabinets are engineered for commercial and industrial (C&I) energy needs, offering high-density, reliable off-grid/on-grid energy storage for peak shaving, energy arbitrage, PV self-consumption and grid auxiliary services. As flagship LFP (Lithium Iron Phosphate) energy storage solutions, the EPES233 (105kW/233kWh) and EPES261L (125kW/261kWh) combine all-in-one outdoor design, advanced liquid cooling, industrial-grade safety and long cycle life—ideal for factories, commercial complexes, petrol stations, farms and more.

Core Advantages of EPES233/261L

🔋 Long-Lasting Performance & High Efficiency

Both models boast >8,000 cycles at 95% DOD (70% EOL), delivering decades of reliable operation for C&I users. The active liquid cooling (and heating) system maintains optimal battery temperature in extreme climates, with a maximum system efficiency of ≥91% (0.25P) for EPES233 and precise SOE accuracy (<3%) for EPES261L. A 0.5P charge/discharge rate and 0-95% depth of discharge maximize energy utilization for cost-effective energy management.

🛡️ Industrial-Grade Safety & Durability

Safety is built into every detail, with UL9540A certification (cabinet level for EPES261L), IP55 ingress protection and C4 anti-corrosion rating—perfect for harsh outdoor, coastal and industrial environments. The multi-level fire protection system includes aerosol suppression, PACK level immersion and active warning, with real-time monitoring to mitigate risks. The EPES233/261L operate in a wide temperature range (-20℃~55℃ for EPES233, -30℃~55℃ for EPES261L), ensuring stable performance in extreme cold and heat.

📦 All-in-One Design & Easy Deployment

The pre-assembled, all-in-one cabinet design enables quick on-site deployment and fast installation—no complex on-site assembly required. EPES261L features a space-saving 1.4m² floor footprint (30% width savings) and one-door design for easy maintenance and transportation, while both models support flexible integration with existing PV systems, grids and microgrids for seamless energy management.

💸 Maximize Asset Returns

EPES233/261L unlock tangible economic value for C&I businesses: cut peak demand charges via peak shaving, generate additional revenue through energy arbitrage, and boost PV self-consumption to reduce grid electricity reliance. Adaptable to diverse C&I energy scenarios, they deliver a high ROI by optimizing energy costs and enabling participation in grid auxiliary services.

Key Technical Specifications

EPES233 (105kW/233kWh)

• Cell Type: LFP | Nominal Capacity: 280Ah
• Rated AC Power: 105kW | Max AC Power: 116kVA
• Cycle Life: >8,000 cycles (95% DOD, 70% EOL)
• Thermal Management: Liquid cooling & heating (battery); air cooling (PCS)
• Operating Temp: -20℃ ~ 55℃

EPES261L (125kW/261kWh) – NEW

• Cell Type: LFP | Nominal Capacity: 314Ah
• Rated AC Power: 125kW | Max AC Power: 137.5kW
• Cycle Life: >8,000 cycles (95% DOD, 70% EOL)
• SOE Accuracy: <3% | Floor Footprint: 1.4m²
• Operating Temp: -30℃ ~ 55℃

Shared Core Specs: IP55 protection | C4 anti-corrosion | 0.5P charge/discharge | Integrated fire suppression | 230/400 Vac grid voltage compatibility

Ideal Application Scenarios

EPES233/261L are tailored for all commercial and industrial energy scenarios, including:

• Factories & Warehouses: Peak shaving, backup power for production lines, PV energy storage
• Commercial Complexes & Hotels: Energy arbitrage, grid load balancing, uninterrupted power for critical loads
• Petrol Stations & EV Charging Hubs: Energy storage for EV fast charging, peak demand reduction
• Farms & Wineries: PV self-consumption, off-grid power for remote operations
• Schools & Hospitals: Reliable backup power, green energy storage for sustainability initiatives

Why Choose EP Energy’s EPES233/261L?

As a global leader in lithium-ion energy storage with 17+ years of expertise, 600,000+ batteries deployed across 136+ countries and international certifications (CE, UL, TÜV, IEC), EP Energy backs the EPES233/261L with:

• Global Localized Service: Local offices, warehouses and service teams in the US, Belgium, Brazil, Malaysia and more for responsive support
• End-to-End Solutions: From demand analysis and custom configuration to installation, maintenance and remote monitoring
• Proven Project Success: Deployed in global C&I projects for peak shaving, energy trading and PV integration
• Performance Warranty: Long-term warranty for high-cycle operation, protecting your energy storage investment

Power Your C&I Energy Strategy with EPES233/261L

EPES233/261L outdoor liquid cooled energy storage cabinets are the future-proof C&I energy solution—blending high performance, industrial safety, easy deployment and maximum asset returns. Whether you’re looking to cut energy costs, boost renewable energy use or ensure grid-independent power, EPES233/261L delivers the reliability and flexibility your business needs.

Partner with EP Energy, the trusted global provider of tailored energy storage solutions, and transform your C&I energy management today.