A High-Performance Medical Power Solution Engineered for Reliability, Safety, and Critical Load Support

Project Summary

Stone Age International executed a complete 18 kW solar PV system for Ma Juah Clinic, a healthcare facility in Barnersville Bend & Stop.
This project was designed to deliver stable, medical-grade power capable of supporting critical loads such as:

• Diagnostic equipment
• Refrigeration (vaccines & medications)
• Lighting
• Fans
• Office equipment
• Emergency care devices

Healthcare facilities require consistent, uninterrupted electricity, and this installation demonstrates Stone Age International’s capability to deliver commercial-scale, life-supporting solar systems built to international engineering standards.

Client Objectives

The clinic faced:

• Frequent grid interruptions
• High operational costs due to generator use
• Energy insecurity affecting service delivery
• Demand for clean, efficient, and dependable energy

Stone Age International was tasked to design a system that ensures:
✔ Steady 24/7 power for critical operations
✔ Reduced generator dependency
✔ Lower long-term operational expenses
✔ Improved patient service continuity

Scope of Work Delivered

Our engineers and technicians provided a full EPC package (Engineering, Procurement & Construction):

1. Medical Facility Load Assessment

We conducted a comprehensive power audit including:

• Identification of critical medical loads
• Peak and diversity load analysis
• Daily usage pattern evaluation
• Backup power duration requirements
• Voltage stability and surge sensitivity assessments

This ensured a system that would support health operations safely and reliably.

2. Technical Design & Engineering Simulation

Using PVsyst, HelioScope, and NEC Solar Software, we developed a system design that included:

• Optimal 18 kW panel array configuration
• String sizing and voltage/current calculations
• Inverter and battery bank matching for peak load demands
• Battery backup autonomy model
• Single-line diagrams (SLDs)
• Surge and overload protection system
• Earthing & lightning protection plan
• Medical-grade power quality compliance

Designs adhered to the following standards:
IEC 60364, IEC 61730, IEC 62109, NEC 690, ISO 9001 Quality Principles.

3. Procurement of Premium-Grade Components

To guarantee durability, efficiency, and safety, we deployed:

• Tier-1 monocrystalline solar panels
• High-efficiency hybrid/commercial-grade inverter
• Lithium storage batteries with deep cycle capability
• SPD (Surge Protection Devices) for AC & DC sides
• Fire-resistant cable conduits
• UV-protected solar cables
• Commercial-strength mounting hardware
• DC & AC combiner boxes with breakers

All materials selected were compliant with international certifications (UL, TUV, IEC).

4. Precision Installation & System Integration

Our trained technicians executed:

• Panel mounting on reinforced structures
• Correct string configuration and shading mitigation
• Secure battery installation with thermal management consideration
• Proper DC/AC wiring according to NEC color codes
• Installation of safety switches, breakers, isolators, and SPDs
• Integration with existing grid and backup generator
• Complete earthing and lightning system
• Load segregation for critical and non-critical equipment

Health facilities require zero tolerance for installation errors, and all work was checked twice.

5. System Testing, Commissioning & Staff Training

We conducted:

• Open-circuit and short-circuit tests
• Inverter response tests under fluctuating loads
• Battery performance & autonomy verification
• Surge protection and grounding test
• Load simulation during grid outage
• Medical equipment compatibility test
• Full system walk-through with clinic staff

A commissioning certificate and warranty documents were issued.

Project Outcome

The 18 kW solar system now provides:
✔ Continuous electricity for medical operations
✔ Strong reduction in generator fuel cost
✔ Stable voltage for sensitive equipment
✔ Increased operational hours & improved patient care
✔ Lower facility downtime
✔ Reduced carbon emissions

The clinic now enjoys clean, reliable power, improving healthcare delivery and operational efficiency.

Why This Project Stands Out

1. Engineered for a Medical Environment

Power stability and safety were prioritized to ensure life-saving equipment can run without interruption.

2. Robust Protection Architecture

Advanced SPDs, breakers, grounding, and thermal safeguards ensure long-term safety.

3. Optimized for Harsh Liberian Conditions

System designed to withstand:

• High humidity
• Intense heat
• Dusty environments
• Voltage fluctuations

4. Long-Term Reliability

Built with components carrying 5–25 year warranties.

5. Strong Institutional Confidence

The clinic reported improved operational performance and reduced monthly costs.

Why Prospective Clients Trust Stone Age International

This project reflects our ability to deliver:

• Precision engineering
• High-performance commercial solar systems
• Strong project management
• Long-term technical support
• Compliance with international electrical and safety standards

Stone Age International remains a preferred partner for hospitals, schools, NGOs, and commercial facilities requiring dependable renewable energy systems.

Need a Commercial Solar System for Your Facility?

We specialize in powering:
Clinics & hospitals
Schools & institutions
Offices & commercial buildings
Production facilities

Let us design a system tailored to your needs.