Uzokwe Reload Services

09/10/2026

Project Objective

The primary objectives of the installation are to:

- Provide uninterrupted power supply to both essential and non-essential electrical loads.
- Reduce dependence on the public utility grid.
- Utilize renewable solar energy during daylight hours.
- Store excess solar energy within the battery bank for use during periods of low solar generation and utility outages.
- Improve energy reliability and power quality.
- Protect all electrical equipment against faults, overloads, short circuits, and surge voltages.
- Provide operational flexibility through an integrated bypass system.

09/10/2026

This report presents the installation and commissioning of a hybrid solar photovoltaic (PV) power system designed to provide reliable, efficient, and uninterrupted electrical power for the client's essential and non-essential loads.

The system consists of:

- One (1) 8kVA Hybrid Inverter

- One (1) 15kWh Lithium Battery

- Fifteen (15) 600W Monocrystalline Photovoltaic Solar Panels

- Complete DC and AC Protection Systems

- Earthing and Grounding System

- Manual Bypass Facility

- Associated Mounting Structures, Cabling, and Accessories

The installation was carried out in accordance with good electrical engineering practices and relevant IEC standards to ensure safety, reliability, efficiency, and long-term performance.

08/10/2026

Installation of an 8kVA Hybrid Solar Power System with 15kWh Lithium Battery Storage and 9kW Photovoltaic Array

01/08/2026

Benefits of the Installation

- Reliable power supply

- Reduced dependence on the utility grid

- Lower electricity bills

- Silent operation

- Automatic power changeover

- Improved battery life through intelligent charging

- High conversion efficiency

- Enhanced electrical safety

- Reduced maintenance requirements

- Operational flexibility through the bypass system

- Protection against electrical faults and voltage surges

12. Maintenance Recommendations

To maintain optimum system performance, the following maintenance practices are recommended:

- Clean the solar panels regularly to remove dust and debris.

- Inspect all electrical connections periodically.

- Test protective devices and circuit breakers routinely.

- Monitor battery voltage and charging performance.

- Avoid connecting loads beyond the inverter's rated capacity.

- Ensure adequate ventilation around the inverter and batteries.

- Inspect the earthing system annually.

- Schedule periodic preventive maintenance by qualified personnel.

13. Conclusion

The installation of the 4.2 kVA, 24 V Hybrid Solar Power System comprising six (6) 600 W photovoltaic modules, two (2) 12 V 200 Ah gel batteries connected in series, and a 4.2 kVA hybrid inverter has successfully provided the client with a dependable and efficient renewable energy solution for essential electrical loads.

The incorporation of comprehensive DC and AC protection devices, isolators, circuit breakers, surge protection, and a properly designed earthing and grounding system ensures safe, reliable, and long-term operation. Additionally, the inclusion of a manual bypass facility offers the flexibility to power essential load circuits directly from the utility grid during maintenance or whenever solar backup is not required, while still allowing the batteries to charge.

Overall, the installed system is expected to deliver improved energy reliability, reduced dependence on the utility grid, enhanced equipment protection, and lower operating costs, making it a practical and sustainable power solution for the client's essential electrical needs.

01/08/2026

9. Bypass Facility

A manual bypass arrangement was incorporated into the installation.

This allows the client to supply the essential load circuits directly from the utility grid whenever desired while keeping the hybrid inverter connected for battery charging.

The bypass system provides several operational advantages:

- Continuous electricity during inverter servicing

- Simplified maintenance without interrupting power to loads

- Operational flexibility

- Ability to isolate the inverter when necessary

- Battery charging from the grid while loads remain energized

This feature enhances overall system reliability and user convenience.

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10. System Operation

During Daylight

- Solar panels generate electricity.

- Solar power supplies the connected loads.

- Excess energy charges the batteries.

- The utility grid remains on standby unless required.

During Cloudy Conditions

- Solar power supplements the loads.

- Batteries provide additional energy if solar generation is insufficient.

- Grid power is used automatically when necessary.

During Utility Power Failure

- The inverter automatically switches to battery power.

- Essential loads continue operating without interruption.

- Solar panels continue supplying energy whenever sunlight is available.

During Utility Power Restoration

- The inverter automatically reconnects to the grid.

- Battery charging resumes if required.

- Solar power remains the primary energy source whenever available.

01/08/2026

Hybrid Inverter

Specification           | Value

Type                          | Hybrid Inverter

Rated Capacity       | 4.2 kVA

Battery Voltage       | 24 VDC

Output Voltage        | 230 VAC

Output Frequency   | 50 Hz

Functions include:

- Solar MPPT charging

- Battery charging

- Automatic source selection

- Grid charging

- Pure sine wave AC output

- Intelligent battery management

- Overload protection

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Battery Bank

Component    | Specification  | Quantity

Gel Battery     | 12 V, 200 Ah    | 2

Battery Connection:

The two batteries were connected in series to obtain:

- Voltage = 24 V

- Capacity = 200 Ah

Stored Energy:

24 V × 200 Ah = 4,800 Wh (4.8 kWh)

The battery bank provides backup energy whenever solar energy is unavailable and the utility supply fails.

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4. Solar Array Configuration

The six photovoltaic modules were configured to suit the operating voltage and MPPT requirements of the hybrid inverter.

The configuration ensures:

- Maximum solar energy harvesting

- Reduced cable losses

- Stable charging voltage

- Efficient MPPT operation

The panels were securely mounted on a durable roofing support structure and positioned to minimize shading while maximizing exposure to sunlight.

01/08/2026

2. Project Objectives

The primary objectives of the installation are to:

- Provide uninterrupted electricity for the client's essential loads.

- Reduce dependence on the public utility grid.

- Lower electricity costs through solar energy utilization.

- Provide automatic backup during grid failures.

- Maximize battery lifespan through intelligent charging.

- Protect equipment against electrical faults and surges.

- Ensure safe operation in accordance with electrical engineering best practices.

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3. System Components

Solar PV Array

Component| Specification| Quantity

Solar Panels| 600 W Monocrystalline PV Module| 6

Total Installed PV Capacity:

600 W × 6 = 3,600 W (3.6 kWp)

The PV array supplies energy directly to the hybrid inverter while charging the battery bank.

01/08/2026

DETAILED TECHNICAL REPORT ON THE INSTALLATION OF A 4.2 kVA HYBRID SOLAR POWER SYSTEM

Project Title

Installation of a 4.2 kVA / 24 V Hybrid Solar Power System with 3.6 kWp Photovoltaic Array and 4.8 kWh Battery Bank

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1. Introduction

This report presents the installation of a 4.2 kVA, 24 V Hybrid Solar Power System designed to provide a reliable, efficient, and uninterrupted electricity supply to the client's essential household loads.

The system utilizes solar photovoltaic (PV) energy as its primary power source during daylight hours while storing excess energy in a battery bank for use during periods of low solar generation and utility power outages.

The installation integrates:

- Six (6) 600 W Monocrystalline Solar Panels

- One (1) 4.2 kVA / 24 V Hybrid Inverter

- Two (2) 12 V 200 Ah Gel Batteries connected in series

- Complete DC and AC Protection Systems

- Earthing and Grounding Network

- Manual Bypass Facility

- Utility Grid Charging Capability

The hybrid configuration automatically prioritizes solar energy while seamlessly switching between solar, battery, and utility power whenever required.

29/07/2026