A Model of Precision Engineering, Quality Installation, and Long-Term Reliability

🌍 Project Summary

Stone Age International completed a fully engineered 3.5 kW residential solar PV system in Johnsonville, designed to provide continuous 24/7 energy for essential household appliances, lighting, and entertainment systems. This project demonstrates our unwavering commitment to delivering international-standard solar solutions, even at residential scale.

Our approach integrates advanced system design, strict safety protocols, and premium-grade components, ensuring maximum efficiency, resilience, and long-term stability in Liberia’s unique environmental conditions.

Client Objective

The homeowner desired:

• A stable and uninterrupted power supply
• Reduced reliance on the LEC grid
• Elimination of generator fuel costs
• A clean, quiet, and maintenance-friendly power solution

Stone Age International designed a system optimized for:
✔ Daily household usage
✔ High efficiency
✔ Low operational cost
✔ Seamless user experience

Scope of Work Delivere

Our engineers executed a complete end-to-end EPC service package:

1. Technical Load Assessment

• Full mapping of household appliances
• Peak load calculation
• Sun hour and shading analysis
• Battery backup requirement design

2. Engineering Design & Simulation

Using PVsyst and HelioScope modeling tools, we designed:

• Array configuration
• Inverter matching
• Battery autonomy hours
• Wiring & protection layout
• Energy yield forecast for 12 months

3. Supply of Certified Components

Only Tier-1 technology was used:

• High-efficiency monocrystalline solar panels
• Pure sinewave inverter
• Deep-cycle or lithium storage bank
• Class-II surge protection devices
• Heavy-duty DC isolators
• UV-resistant solar cables
• Weather-proof mounting structures

All components meet international certifications such as:
IEC 61215, IEC 61730, IEC 62109, IEC 60364, UL 1703, TUV Rhineland.

4. System Installation

Conducted by trained solar technicians following NEC & IEC standards:

• Safe rooftop mounting installation
• Accurate PV string configuration
• Battery bank setup with ventilation compliance
• AC and DC wiring using color-coded conductors
• Installation of overcurrent & surge protection
• Earthing & lightning protection

5. Quality Assurance & Commissioning

Strict checks performed:

• Electrical continuity tests
• Polarity verification
• Insulation resistance measurement
• No-load & full-load performance tests
• System monitoring demonstration
• Handover with training to the client

Project Outcome

The installed system provides:
✔ 24-hour uninterrupted supply
✔ Reduced electricity costs by 70–90%
✔ Powers lights, fans, TV, chargers, and small appliances
✔ Estimated lifespan of 25+ years for PV modules
✔ Near-silent operation with zero emissions
✔ Fast return on investment

The client reported:

“My home has been stable with clean electricity every day. Stone Age International did an excellent job with professional installation and system performance.”

Why This Project Stands Out

1. Built to International Standards

Every stage of this project aligns with:

• IEC Solar Installation Standards
• National Electrical Code (NEC)
• ISO Quality Management Principles

2. Premium Safety Measures

• Surge protection
• Overcurrent protection
• Ground fault protection
• Lightning arrestor installation

3. Designed for Liberia’s Climate

• High-temperature resistant panels
• Corrosion-proof mounting hardware
• Tropical-grade ventilation for batteries

4. Lifetime Support

We provide:

• 12-month workmanship warranty
• Optional annual maintenance
• Remote or on-site system diagnostics

Why Prospective Clients Choose Us

Stone Age International is not just an installer—we are energy partners who ensure that every client receives:

• Engineering excellence
• Transparent project management
• Durable installations
• Clean, stable, and affordable power

Our systems are built to last and proven to perform.

Ready for a Reliable Solar Solution?

If you want a solar installation that:
✓ Works day and night
✓ Reduces your energy expenses
✓ Uses advanced international technologies
✓ Comes with professional support

Stone Age International is ready to build it for you.

👉 Contact Us Today: