FOR IMMEDIATE RELEASE
MECC officially releases a fully compliant US-standard high-voltage solar energy storage system, integrating the 11.4kW Solis hybrid inverter and a 50kWh Class A LiFePO4 all-in-one battery cabinet. Engineered for 120/240V split-phase 60Hz grid environments, this turnkey solar ESS passes full UL and IEEE grid interconnection certifications, delivering reliable off-grid operation, seamless backup power and flexible solar expansion capabilities. Optimized for residential whole-house backup and small commercial solar storage projects, the pre-tested plug-and-play system provides US installers, EPC contractors and regional distributors with a fully compliant, low-noise and scalable energy storage solution with in-stock availability and direct factory delivery.
The United States residential and small commercial solar storage market demands strict grid compliance, split-phase voltage compatibility and high overload tolerance. Most generic hybrid storage systems fail to meet local UL and IEEE interconnection standards, resulting in complicated permit approval and grid connection barriers. In addition, many assembled ESS setups suffer from poor battery-inverter matching, slow UPS switching speed and limited brand compatibility, restricting project flexibility and post-installation expansion potential. MECC's new 11.4kW/50kWh high-voltage energy storage package solves these industry pain points with US-standard electrical design, full third-party certification, wide battery compatibility and intelligent remote management, perfectly matching mainstream technical specifications for North American solar backup projects.
US Standard Electrical Design and Full Certification Compliance
Tailored exclusively for North American power grids, the system adopts a standard 120/240V split-phase 60Hz design, fully adapting to local residential and commercial power consumption habits and grid operation rules. The core inverter model is the Solis S6-EH1P11.4K-H-US high-voltage hybrid inverter, a grid-friendly device widely recognized in the US solar market.
The complete ESS has obtained authoritative industry certifications including UL 9540, UL 1741SB and IEEE 1547-2018. UL 9540 verifies the overall system electrical and mechanical safety of energy storage equipment, while UL 1741SB and IEEE 1547-2018 standardize distributed energy grid interconnection performance, ensuring anti-islanding protection, voltage and frequency response, and grid ride-through capabilities that meet US utility requirements. Full certification greatly simplifies local project inspection, permitting and grid-connection procedures, helping B2B partners shorten project cycles and avoid compliance risks.
High-Performance Inverter and High-Voltage Battery Configuration
The Solis 11.4kW US hybrid inverter features four independent MPPT trackers, supporting a maximum PV voltage of 600V and 16A current per string. The multi-MPPT design improves solar energy harvesting efficiency under uneven irradiation and complex roof layouts, maximizing power generation for residential and small-scale PV systems.
Matched with a 50kWh high-voltage Class A LiFePO4 integrated cabinet, the system supports a battery voltage range of 120V to 500V and a maximum charge-discharge current of 50A. The high-voltage architecture reduces system current loss, improves overall energy efficiency and lowers heat generation during long-cycle operation. Strictly selected Class A lithium iron phosphate cells ensure stable capacity output, excellent thermal stability and extended service life for long-term residential and commercial cyclic use.
Ultra-Fast UPS Switching and Strong Overload Resistance
Reliable backup performance is critical for grid-unstable areas and essential load scenarios. This ESS achieves seamless power switching within 10 milliseconds during grid outages, ensuring uninterrupted power supply for household appliances, office equipment and core commercial loads without blackout interruption.
The system supports 170% AC overload capacity, enabling stable startup and operation of high-power electrical devices and inductive loads that require large instantaneous current. The strong overload tolerance effectively avoids system shutdown caused by instantaneous power surge, improving equipment stability in complex daily power consumption scenarios and meeting the diverse load demands of modern families and small businesses.
Wide Compatibility and Flexible System Expandability
Designed with open compatibility, the high-voltage hybrid system supports mainstream high-voltage battery brands worldwide, including LG Energy Solution, BYD and Pylontech. This multi-brand compatibility allows installers and system integrators to flexibly match battery equipment according to project budget and client preferences, improving project customization flexibility.
In terms of system expansion, the ESS supports generator connection and solar panel capacity expansion, providing more power supply options for off-grid and weak-grid projects. Its AC-coupled design enables seamless upgrades of existing grid-tied solar systems, allowing users to add energy storage backup functions without overhauling original PV equipment. In addition, the system supports parallel connection of multiple units, realizing step-by-step capacity expansion to adapt to future power demand growth.
Low-Noise Outdoor Deployment and Intelligent Remote Management
The integrated battery cabinet adopts natural heat dissipation and optimized structural noise reduction design, with overall operating noise lower than 30dB, creating a quiet operation environment for residential communities and commercial areas. The outdoor waterproof cabinet structure adapts outdoor installation scenarios, with excellent dustproof and weather resistance to cope with variable outdoor climatic conditions.
Equipped with Bluetooth and cloud remote monitoring functions, the system supports real-time data viewing, parameter adjustment and equipment status diagnosis through mobile APP and cloud platform. The intelligent unmanned operation mode reduces daily maintenance pressure, enabling users and operation teams to grasp system power generation, energy storage and load operation status anytime and anywhere.
Application Scenarios and B2B Market Value
This US-standard hybrid energy storage system is highly suitable for whole-house backup power, residential solar self-consumption and small commercial energy storage projects across North America. For end users, it effectively solves grid outage problems, reduces grid electricity bills and improves clean energy utilization rate. For local solar installers, EPC contractors and distributors, the fully certified, highly compatible and scalable turnkey solution lowers project technical thresholds, reduces after-sales risks and supports rapid market replication.
MECC provides direct factory supply and in-stock fast shipment services, eliminating intermediate links and ensuring stable product quality and competitive pricing. Professional technical support, complete datasheets and parameter documents are available for global partners to support project design and promotion.
Industry Outlook
As the US residential solar storage market continues to expand, UL-certified, split-phase compatible and highly scalable hybrid ESS will remain the mainstream demand for distributed energy projects. MECC will continue to optimize US-standard energy storage product performance, upgrade system compatibility and intelligent functions, and provide more compliant, cost-effective turnkey solar storage solutions for North American partners and end users.
About MECC
MECC is a professional manufacturer and supplier of certified residential and commercial solar energy storage systems. Focusing on high-voltage hybrid inverters, integrated LiFePO4 battery cabinets and turnkey ESS solutions compliant with US and European standards, the company provides reliable, scalable and grid-certified clean energy storage products for global distributed solar projects.
MECC 50KW 112KWH BESS Battery Energy Storage System
The MECC 50kw 112kWh Battery Energy Storage Cabinet is a high-capacity energy storage solution designed for industrial and commercial applications. Featuring 358V, 314Ah lithium iron phosphate (LiFePO4) battery, it ensures long-lasting, safe, and efficient energy storage.
High-efficiency 50kW/112kWh Industrial and Commercial Energy Storage System (C&I ESS). Features LiFePO4 battery, peak shaving, and smart EMS. Reduce operational costs and ensure power backup. Inquire for custom BESS solutions.
Designed with a compact footprint of less than 1.2 square meters, this 112kWh cabinet features a pre-integrated all-in-one design, reducing on-site installation time by 40% compared to modular rack systems.