A Reliable Educational Energy Solution Engineered for Learning Environments & Operational Efficiency

Project Summary

Stone Age International successfully installed a 10 kW hybrid solar PV system at the Building for Tomorrow Trade School in Johnsonville, Liberia.
The institution needed a stable, efficient power solution to support classrooms, administrative offices, ICT equipment, and training workshops that frequently suffered from grid interruptions.

This project showcases our ability to deliver institutional-grade solar solutions that enhance learning environments, improve operational continuity, and significantly reduce energy-related expenses.

Client Objectives

Educational institutions require energy stability to maintain:

• Classroom lighting and ventilation
• Computer labs and training equipment
• Administrative operations
• Charging stations and digital learning tools

The school requested a solution that would:
✔ Provide uninterrupted power during classes
✔ Reduce generator dependency and fuel expenses
✔ Improve learning comfort and productivity
✔ Support ICT-based training
✔ Reduce overall operational costs

Stone Age International provided a hybrid system tailored for both reliability and long-term affordability.

Scope of Work Delivered

We delivered a full EPC (Engineering, Procurement & Construction) solution.

1. Institutional Load Assessment & Energy Profiling

Our engineers analyzed:

• Classroom load distribution
• Office energy demand
• ICT equipment sensitivity
• Peak hour consumption
• Backup requirements during outages
• Grid instability patterns in Johnsonville

This allowed for accurate inverter sizing and battery capacity design.

2. Engineering Design & Technical Simulation

Using advanced solar design tools — PVsyst, HelioScope, AutoCAD Electrical — we produced:

• Hybrid system architecture (solar → battery → grid)
• 10 kW panel array configuration
• String sizing and shading mitigation plan
• Battery autonomy projections for full school hours
• Electrical protection layout (SPD, MCB, MCCB, isolators)
• AC/DC wiring schematics and SLDs
• Earthing and lightning protection plan

All designs complied with:
IEC 62109, IEC 60364, IEC 61730, NEC 690, ISO 9001.

3. Procurement of Certified High-Quality Components

To ensure long-term durability and safety, we sourced:

• Tier-1 monocrystalline solar panels
• Advanced hybrid inverter with load management
• Lithium battery storage for extended autonomy
• Surge protection devices (AC/DC)
• DC isolators and fuse boxes
• Weather-resistant mounting hardware
• Fire-safe conduits and solar cabling

All components carried international certifications (TÜV, UL, IEC).

4. Professional Installation & System Integration

Our installation team carried out:

• Structurally sound mounting system installation
• Clean PV array wiring with optimized string layouts
• Battery installation in a ventilated, secure environment
• AC and DC protection device installation
• Electrical load balancing for ICT equipment
• Integration of solar, battery, and grid inputs
• Earthing systems and lightning protection
• System labeling and safety markings

The system was installed to support both daily classes and administrative operations.

5. Testing, Commissioning & Staff Orientation

Before handover, the system underwent:

• Voltage and current balance verification
• Inverter performance tests under dynamic loads
• Battery discharge/charge cycle tests
• ICT equipment compatibility test
• Backup simulation during grid failure
• Safety and grounding verification

We then conducted a comprehensive training session for school staff on:

• Operating the hybrid system
• Safe usage practices
• Basic troubleshooting
• Energy-saving best practices

A commissioning certificate and user guide were provided.

Project Outcome

The 10 kW hybrid solar system now provides:
✔ Consistent electricity for classrooms and administrative offices
✔ Reliable power for computer labs and learning tools
✔ Reduced generator usage and monthly operational costs
✔ Improved comfort and learning environment for students
✔ Enhanced digital and vocational training capacity
✔ Reduced carbon footprint

This installation has significantly improved educational delivery and administrative productivity.

Why This Project Stands Out

1. Built Specifically for Learning Environments

System designed to support ICT tools, classroom appliances, and administrative workloads.

2. Significant Cost Savings

School reports reduced monthly expenses and more predictable budgeting.

3. Long-Term Reliability

PV lifespan of 25+ years and battery bank designed for 8–12 years.

4. Safety & Compliance

Meets international safety standards for institutions with youth populations.

5. Technical Excellence

Hybrid architecture ensures smooth operation even during grid outages.

Why Institutions Trust Stone Age International

This project highlights our strengths in:

• Institutional-scale solar engineering
• Reliable EPC delivery
• Strong communication and transparency
• Long-term system support
• High workmanship quality

We are a trusted partner for schools, universities, training centers, and educational NGOs across Liberia.

Need a Solar System for Your School or Training Facility?

Whether you manage a school, training center, or academic program, we can design a custom system that ensures:
Reliable electricity
Improved learning environment
Reduced energy costs
Modern, technology-ready classrooms

👉 Contact Stone Age International Today: