₦airaland Forum

About 50% of solar installation fails or could not deliver based on expectations of the installer and the client. When such happens, most of the times both the client and the installer blames the products (mostly panels, inverter or battery). I came across many problems like this.

I narrowed down the causes to these two major factors that contributes to this failures, which are;

1. Lack of professionalism from the installer and

2. Client looking for budget friendly with high expectations.

I don't want to go into details of these two, but I'm highlighting the overall causes here and brief explanation on how to design your solar system.


A solar system can fail due to

Poor Design
Incorrect sizing or incompatible components.

Shading
Obstructions reduce panel efficiency.

Bad Installation
Faulty wiring, incorrect orientation, or insecure mounting.

Lack of Maintenance
Dirt, debris, or component degradation.

Inverter Issues
Overload or overheating.

Battery Problems
Overcharging, deep discharging, or temperature sensitivity.

Grid Problems
Utility grid issues affecting performance.

Extreme Weather
Damaging hail, storms, or temperature extremes.

Financial Issues
Unrealistic expectations

Technological Obsolescence
Older systems becoming outdated.

Proper design, quality components, and regular maintenance are key to avoiding these failures.

Understanding Solar Power

How Solar Panels Work

Solar panels, or photovoltaic (PV) panels, convert sunlight into electricity. They contain cells made from semiconductor materials (usually silicon) that generate electricity when exposed to sunlight.

Types of Solar Panels

The most common types are monocrystalline, polycrystalline, and thin-film panels. Each has its advantages and is suited for different applications.

Key Components of a Solar Power System

Solar Panels

Capture sunlight and convert it into direct current (DC) electricity.

Inverter

Converts DC electricity into alternating current (AC), which is used by most home appliances.

Mounting System

Secures the solar panels to the roof or ground.

Batteries (Optional)

Store excess energy for use when the sun isn’t shining.

Charge Controller

Regulates the voltage and current coming from the solar panels, especially when charging batteries.

Meter and Monitoring System

Tracks the energy production and consumption.

Planning and Designing a Solar Installation

Site Assessment

Analyze the location to determine if it’s suitable for solar installation. Factors include roof orientation, shading, and local weather patterns.

System Sizing

Calculate the amount of electricity needed and design a system that can meet these needs.

Choosing the Right Equipment

Select the appropriate panels, inverters, and other components based on the site and energy needs.

Installation Process

Mounting the Panels

Install the mounting system on the roof or ground and secure the solar panels.

Electrical Wiring

Connect the panels to the inverter and then to the home’s electrical system.

Inverter and Battery Setup

Install and connect the inverter and batteries (if included).

System Testing and Commissioning

Test the system to ensure it’s working correctly and safely.

Maintenance and Monitoring

Regular Inspection

Check for dirt, debris, or damage on the panels and ensure all components are functioning correctly.

Cleaning

Occasionally clean the panels to ensure they are working efficiently. Panels can be washed especially during dusty periods once a year or if they are installed closer to trees where leaves can fall on the panels by wind.

Monitoring

Use the monitoring system to track performance and detect any issues early. This is applicable to high-end solar products, it can be achieved most through the inverter or lithium battery. Your solar system can be monitored even remotely.

Financial Considerations

Cost and Savings

Understand the initial investment, potential savings on energy bills especially for companies, offices and homes.

Payback Period

Calculate how long it will take for the savings to offset the cost of the installation. This is very helpful in choosing the best and most reliable products.

Environmental Impact

Reducing Carbon Footprint

Solar power is a clean energy source that helps reduce greenhouse gas emissions.

Sustainability

Solar panels have a long lifespan (typically 25-30 years) and require minimal maintenance, making them a sustainable choice.

I will be be writing on how to do load analysis and solar system design calculations for sizing at my spare time.

Please note that I'm an Engineer (Mechanical) and a manager for Sunshine Solar.