15kWh solar energy storage system installation case - 11kW Off-Grid inverter and LiFePO4 Battery

Some regions in the Middle East, where electricity access can be inconsistent, a homeowner has taken a significant step towards energy independence. By installing a comprehensive solar energy storage system, so that household now enjoys reliable power, reduced energy costs, and a sustainable lifestyle.

System Overview

• Location: Yemen
• Inverter: Axpert MAX TWIN 8KW
• Battery: MOTOMA M89 LiFePO₄ (15.36 kWh)
• Solar Panels: Mono PERC Technology

Inverter: Axpert MAX TWIN 11KW

The Axpert MAX TWIN 11KW inverter is a high-performance off-grid solution designed for smart energy management. Key features include:

• Dual Outputs: Allows for intelligent load distribution, ensuring essential appliances receive uninterrupted power.
• High PV Input Current: Supports up to 27A, accommodating substantial solar input.
• Wide PV Voltage Range: Operates efficiently between 90VDC and 450VDC.
• Built-in Wi-Fi: Enables mobile monitoring through Android/iOS applications.
• Battery Independence: Functions effectively even without a connected battery, offering flexibility in system design.

Battery: MOTOMA M89 LiFePO₄

The MOTOMA M89 battery is a robust energy storage solution with the following specifications:

• Capacity: 15.36 kWh
• Cycle Life: Over 6,000 cycles at 80% Depth of Discharge (DOD)
• Intelligent BMS: Built-in Battery Management System ensures safety and efficiency.
• Communication: Supports CAN/RS232/RS485 protocols for seamless integration.
• Temperature Range: Operates effectively between -20°C and 60°C.

Solar Panels: Mono PERC Technology

The system utilizes Mono PERC (Passivated Emitter and Rear Cell) solar panels, known for:

• High Efficiency: Generates 6% to 12% more energy than traditional panels.
• Low-Light Performance: Maintains efficiency even under cloudy conditions.
• Durability: Designed for long-term performance with reduced degradation.

Benefits Realized

• Energy Independence: Reduced reliance on the grid, ensuring consistent power supply.
• Cost Savings: Lower electricity bills through efficient solar energy utilization.
• Environmental Impact: Decreased carbon footprint by harnessing renewable energy.
• System Scalability: The inverter supports parallel operation with up to 6 units, allowing for future expansion.

Relevance Across Yemen

This solar energy solution is particularly beneficial for residents in various governorates of Yemen, including:

• Aden
• Sana‘a
• Taiz
• Ibb
• Al Hudaydah
• Hadramaut
• Hajjah
• Dhamar
• Ma‘rib
• Shabwah
• Al Bayda
• Al Mahwit
• Raymah
• Sa‘dah
• Lahij
• Abyan
• Al Jawf
• Al Mahrah
• Socotra Archipelago

In regions like Hajjah and Lahij, where fuel prices have surged and availability is limited, solar energy offers a cost-effective and sustainable alternative. For instance, the cost of 20 litres of diesel has risen from USD 7 to around USD 17, making solar solutions more appealing.

This installation in Yemen exemplifies how integrating advanced solar technology can transform residential energy consumption. By combining the Axpert MAX TWIN inverter, MOTOMA M89 battery, and Mono PERC solar panels, the homeowner has achieved a sustainable and reliable energy solution.