A Model of Advanced System Design, Efficiency Optimization & 24/7 Power Assurance

Project Summary

Stone Age International successfully engineered and installed a 10 kW hybrid solar PV system for a residential/commercial facility located in Congo Town Back Road, Liberia.
This system was designed to provide uninterrupted power, reduce generator fuel consumption, and increase the client’s overall energy independence.

The hybrid system integrates solar panels, lithium battery storage, and grid/generator support, allowing seamless transitions between energy sources while maintaining consistent power quality. This project demonstrates our capability to deliver high-performance, medium-scale solar solutions built for modern households and small businesses.

Client Objectives

The client requested a solution that would:

• Provide constant, reliable electricity for home and business operations
• Reduce high monthly energy expenses
• Minimize dependency on diesel generators
• Ensure automatic backup during grid outages
• Support essential and semi-critical loads (lights, fridge, computers, small appliances)

Stone Age International designed a hybrid solar system optimized for autonomy, efficiency, and long-term energy cost savings.

Scope of Work Delivered

Our team executed a comprehensive EPC (Engineering, Procurement & Construction) process that included:

1. Detailed Site & Load Assessment

• Full inventory of electrical appliances
• Peak demand measurement
• Sun exposure and roof structural analysis
• Battery backup hour requirement calculation
• Grid outage pattern evaluation

This assessment ensured the system was engineered to meet real operational needs.

2. Advanced Engineering Design & Simulation

Using PVsyst, HelioScope, and NEC-compliant design tools, we developed a system that included:

• 10 kW solar array configuration (panel sizing, tilt angle, string arrangement)
• Hybrid inverter specification & battery bank sizing
• Simulation of expected daily and seasonal energy yield
• Single-line diagrams (SLDs) and wiring schematics
• Protection system layout including fuses, breakers, SPDs, isolators

All designs aligned with IEC 61730, IEC 61215, NEC 690, and solar EPC best practices.

3. Procurement of Premium-Grade Components

To guarantee long-term durability and efficiency, we supplied:

• Tier-1 monocrystalline solar panels
• Hybrid inverter with intelligent load management
• Lithium battery storage for extended backup hours
• Class-II surge protection devices (AC/DC)
• Heavy-duty DC isolators and breakers
• High-capacity solar cables & connectors
• Weather-resistant mounting structures

All items are certified under IEC, UL, TUV, and international safety standards.

4. Precision Installation & Integration

Our certified technicians executed a safe, professional installation process:

• Proper PV array mounting with corrosion-proof structures
• Optimized cable routing with UV-protected conduits
• Battery bank installation with proper ventilation
• Integration of grid and generator inputs
• Earthing and lightning protection installation
• AC/DC protection coordination
• System labelling & compliance markings

The installation met international electrical standards and best practices.

5. Testing, Quality Assurance & Commissioning

Before handover, we performed:

• Voltage and current balance checks
• Battery charge/discharge performance tests
• Polarity and insulation resistance tests
• Hybrid operation trials (solar → battery → grid → generator transitions)
• Load performance simulation
• Customer operation training

A full commissioning report was prepared and delivered to the client.

Project Outcome

The 10 kW hybrid system now provides:

✔ 24-hour uninterrupted power
✔ Significant reduction in generator runtime and fuel cost
✔ Increased energy autonomy and operational stability
✔ Seamless switching between solar, battery, and grid supply
✔ Improved power quality for sensitive electronics
✔ Long-term financial savings

The client observed immediate improvements in energy reliability and reported a substantial drop in monthly electricity expenses.

Why This Project Stands Out

1. High-Efficiency Hybrid Architecture

The system intelligently manages solar, battery, and grid resources to maximize uptime and reduce waste.

2. Engineer-Certified Installation

Installed to IEC, NEC, and ISO 9001 quality guidelines.

3. Built for Liberian Conditions

Panels selected for high heat tolerance, inverter for grid instability, batteries for long cycle life.

4. Long-Term Durability

The hybrid system is designed for 15–25 years of dependable performance.

5. Client Training & After-Sales Support

We provide:

• Operational training
• Troubleshooting guidance
• Annual maintenance packages
• Remote monitoring (where applicable)

Why Prospects Choose Stone Age International

Our work on this 10 kW hybrid system highlights our strengths as a top-tier solar EPC provider:

• Precise engineering design
• Strong technical capacity
• Transparent project execution
• High-quality installation
• Commitment to customer satisfaction

This project demonstrates that Stone Age International consistently delivers premium, reliable, and efficient solar solutions tailored to client needs.

Interested in a Similar System?

If you need a powerful solar solution that:
✓ Eliminates outages
✓ Reduces fuel expenses
✓ Supports home or business operations
✓ Uses world-class engineering and technology

👉 Contact Stone Age International today.