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GoodWe Unveils the ESA Series: A New Benchmark for Integrated C&I Energy Storage
The commercial and industrial (C&I) energy sector is demanding smarter, more efficient, and easier-to-deploy storage solutions.
Alan Zhu
August 29, 2025
The commercial and industrial (C&I) energy sector is demanding smarter, more efficient, and easier-to-deploy storage solutions. Answering this call, global inverter and storage leader GoodWe has launched its latest innovation: the ESA Series 125kW/261kWh all-in-one energy storage system. This powerful, liquid-cooled unit is poised to transform energy management for factories, EV charging hubs, agricultural operations, and commercial complexes worldwide.
Designed for simplicity and scalability, the ESA Series represents a significant leap forward in integrated battery technology. By consolidating critical components into a single, robust cabinet, GoodWe eliminates complex system integration, reducing installation time and operational overhead. Let's delve into what makes this product a game-changer.
Product Spotlight: GoodWe ESA Series 125kW/261kWh
This system is a fully integrated, containerized solution built on stable Lithium Iron Phosphate (LFP) chemistry. Its "all-in-one" design is its key differentiator, bundling the Power Conversion System (PCS), Energy Management System (EMS), and Battery Management System (BMS) into one unified product.
Key Specifications at a Glance:
Specification | Detail |
|---|---|
Nominal Capacity | 261 kWh |
Rated Power | 125 kW |
Battery Chemistry | Lithium Iron Phosphate (LFP) |
Scalability | Up to 15 units in parallel (1.87 MW / 3.91 MWh) |
Footprint & Weight | 1.47 m², 2580 kg |
Energy Density | 177.6 kWh/m² |
Cycle Life | 6,000 cycles |
Round-Trip Efficiency | 92% (PCS efficiency: 98.6%) |
Operating Voltage | 676 V - 936 V |
Charge/Discharge Current | 188 A max |
Operating Temperature | -25°C to 55°C |
Cooling System | Hybrid (Liquid cooling for battery, air cooling for PCS) |
Ingress Protection | IP54 (Suitable for outdoors) |
Safety Certifications | UL 9540A Tested, TÜV Rheinland Certified |
Key Features | Grid-forming capability (with STS Box), VSG support, 6-layer protection system, aerosol fire suppression, automatic dehumidification |
Competitive Comparison: How Does the ESA Series Stack Up?
The integrated C&I storage market is growing rapidly. To see how the GoodWe ESA Series competes, we can compare it to similar all-in-one solutions from leading manufacturers like Tesla and Dyness.
Feature | GoodWe ESA 125/261 | Tesla Megapack | Dyness DL5.0-C |
|---|---|---|---|
Capacity (per unit) | 261 kWh | ~3000 kWh | 102.4 kWh |
Power (per unit) | 125 kW | ~1500 kW | 50 kW |
Form Factor | Cabinet | Large Container | Cabinet |
Target Market | Medium to Large C&I | Utility & Extreme Scale C&I | Small to Medium C&I |
Scalability | Highly Flexible (Cabinet-level) | Massive (Container-level) | Highly Flexible (Cabinet-level) |
Cooling Method | Hybrid (Liquid + Air) | Liquid Cooling | Air Cooling |
Key Differentiator | Balance of power, scalability & safety in a cabinet form | Extreme scale and power for massive projects | Compact, modular design for smaller sites |
Highlighting the Differences:
vs. Tesla Megapack: The Megapack operates in a different league regarding sheer size and capacity per unit. The GoodWe ESA is a cabinet-scale solution, offering more granular scalability for projects in the several-hundred-kWh to multi-MWh range. It's a more practical and flexible choice for a single factory or commercial building, whereas the Megapack is designed for utility-scale or massive corporate campus applications.
vs. Dyness DL5.0-C: Dyness offers a competitive cabinet solution but with a lower base capacity per unit (102.4 kWh vs. 261 kWh). The GoodWe system offers higher energy density and a more advanced hybrid cooling system (liquid vs. Dyness's air cooling), which can lead to better thermal management, higher efficiency under heavy load, and potentially longer battery life. GoodWe also emphasizes its grid-forming capability for off-grid applications, a critical feature for microgrids and backup power.
The GoodWe Advantage: The ESA Series finds its sweet spot by offering a potent blend of high capacity per cabinet, superior liquid cooling, and military-grade safety features, all while maintaining the flexibility of a modular cabinet design.
Unmatched Safety and Reliability
GoodWe has not compromised on safety. The system is rigorously tested under UL 9540A methodology and features a comprehensive six-layer protection strategy. This includes:
Integrated aerosol fire suppression modules in both the battery packs and the main cabinet.
Continuous monitoring via smoke, thermal, and combustible gas detectors.
Pack-level humidity monitoring with automatic dehumidification.
TÜV Rheinland certification for environmental adaptability, ensuring performance across diverse climatic and electromagnetic conditions.
Proven Applications and ROI
The ESA Series is designed for a multitude of use cases:
Peak Shaving & Demand Charge Reduction
Energy Arbitrage & Trading
Backup Power & Off-Grid Operation (with Grid-Forming capability)
Supporting EV Charging Infrastructure
Integrating Renewable Sources (Solar & Wind)
Its effectiveness is already demonstrated in China. At GoodWe’s own manufacturing site in Guangde, nine ESA units were deployed, significantly reducing power costs. Another landmark project in De’an created the country’s first charging station integrating wind, solar, and storage, powered by seven ESA cabinets, showcasing its versatility and robustness.
The Bottom Line
The GoodWe ESA Series 125kW/261kWh is a compelling, top-tier option for businesses looking to take control of their energy costs, enhance sustainability, and ensure resilience. Its all-in-one design simplifies the complex, its hybrid cooling ensures performance, and its rigorous safety standards build trust. For any C&I energy manager considering storage, this new entry from GoodWe deserves a place at the top of the evaluation list.
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