Project Background

The client, living in a suburb of Lagos, Nigeria, faced a dual challenge: unreliable grid power and rising diesel prices. The local grid was available for less than 8 hours a day, often with severe voltage fluctuations that damaged sensitive home appliances. For years, the family relied on a 10kVA diesel generator, spending over $300 monthly on fuel and maintenance. The constant noise pollution disrupted their sleep, and the exhaust fumes posed long-term health risks. They urgently needed a sustainable, silent, and automatic power solution to run essential loads, including LED lighting, fans, a refrigerator, a television, and laptops.

The Solution

Our engineering team designed a cost-effective off-grid system centered around a 5kW High-Frequency Solar Inverter.

• Smart MPPT Technology: The inverter features a built-in MPPT controller with 99.9% tracking efficiency, ensuring maximum energy harvest even during the cloudy rainy season.
• Lithium Upgrade: Instead of traditional lead-acid batteries which require frequent maintenance, we installed 10kWh of LiFePO4 Wall-Mount Batteries. These units support a higher depth of discharge (DOD) and faster charging speeds, allowing the system to fully recharge within 4 hours of sunlight.
• Protection: The system includes a comprehensive protection box with surge arresters to shield the equipment from lightning strikes, common in the region.

Result

Since commissioning, the system has operated flawlessly. The inverter’s UPS function ensures a seamless switchover (<10ms) when the grid fails, so the family doesn't even notice the power cut. The diesel generator has been decommissioned, saving the client thousands of dollars annually. "The silence is the best part," the homeowner remarked. "We finally have peace of mind."