How to Choose Solar Panels

By Josh Roberts
April 25, 2024

In a world increasingly concerned about sustainability and the environment, the solar revolution has moved from a fringe interest to the mainstream. Homeowners across the globe are looking to harness the power of the sun to not only cut their electricity bills but also reduce their carbon footprint. But with so many options available, where do you start in the solar panel selection process?

This comprehensive guide outlines all you need to know to make the right choice when it comes to the vital component of a solar-powered system, the solar panels themselves.

Solar Panels Demystified

Understanding the core technology behind solar panels is crucial before making any purchasing decisions. Solar panels, often referred to as photovoltaic (PV) panels, convert sunlight directly into electricity. This happens through a process known as the photovoltaic effect, which occurs when photons (light particles) strike the surface of the solar cell, causing electrons to be set in motion, generating a flow of electricity.

Types of Solar Panels

There are three primary types of solar panels available on the market. Monocrystalline and polycrystalline panels are the most common, typically made from silicon wafers, with the former known for its higher efficiency and sleek black appearance. Thin-film solar panels are much lighter and more flexible than crystalline panels, making them suitable for unconventional installations.

Panel Efficiency and Output

Efficiency refers to the amount of sunlight the panel can convert to electricity. A higher efficiency means more solar energy can be converted, which is important if you have limited roof space but want to generate a significant amount of power.

Durability and Longevity

Durability is a key factor, as solar panels are designed to withstand the elements for decades. When assessing a panel’s durability, look at the materials used, the mounting system, and the wind and snow loads it can endure. The right choice ensures the panels will last as long as they need to generate a return on your investment.

Factors to Consider When Choosing Solar Panels

When selecting solar panels for your home, there are several critical factors to consider to ensure that the investment is both economical and sustainable.

Solar Panel Efficiency

It’s vital to select panels with high efficiency ratings to maximise energy output. The higher the efficiency, the more electricity the panels will generate for the same amount of sunlight.

How to Calculate Efficiency

Efficiency is calculated by dividing the panel’s electrical output by the amount of energy from sunlight it receives. This number is presented as a percentage and indicates the panel’s effectiveness at converting solar energy into electricity.

Durability and Warranty

For an investment as significant as solar panels, it’s important to ensure that you’re protected against manufacturing defects and that your panels will provide hassle-free operation for years to come.

Understanding the Warranty

A typical warranty includes two parts: a product warranty that covers the integrity of the panel and a performance warranty that guarantees the panel will produce at a certain percentage compared to its initial output.

Cost and Affordability

Cost is often a significant concern for homeowners considering solar panels. Balancing upfront costs with long-term savings is essential in making a wise investment decision.

Upfront Costs

The upfront cost of a solar panel system varies depending on the type and size of your system. It typically includes the cost of the panels, inverters, mounting hardware, and the installation itself.

Long-Term Savings

The long-term savings from solar panels come from reduced electricity bills and potential income from excess electricity production that’s fed back into the grid.

Financing Options

Multiple financing options, including loans, leases, and power purchase agreements (PPAs), can help make solar panels more affordable.

Sizing Your Solar Panel System

Determining the right size for your solar panel system is crucial. Too few panels and you won’t generate enough electricity, too many and you’ve overspent on your system.

Assessing Your Energy Needs

Understanding your household’s energy consumption patterns is the first step in sizing your system. Look at your electricity bills to determine your average daily usage in kWh.

Calculating the Solar Panel System Size

Once you have your average daily usage, you can calculate the size of the system needed by dividing the total energy usage by the average number of sun hours in your location. This will give you the number of solar panels required to meet your needs. use our solar calculator to learn more about your solar potential

Considering Future Changes

When deciding on your solar panel system size, always account for potential changes in your consumption patterns, such as the addition of electric vehicles or home renovations that might increase energy needs.

Solar Panel Installation

Solar panel installation is a significant project that can have a lasting impact on your home and your energy future. Whether you choose to work with professionals or take a DIY approach, several crucial steps must be followed to ensure a successful installation.

DIY vs. Professional Installation

While DIY installations can save you money, they also come with risks and require considerable time and skill. Professional installations offer peace of mind and often come with warranties and guarantees.

The Installation Process

The installation process typically involves several steps, including roof assessment, mounting the panels, connecting the electrical components, and final inspections.

Finding a Reputable Installer

Research local solar installers to find reputable companies with a proven track record. It’s important to get multiple quotes and to ask for references before making a decision.

Permits and Regulations

Solar panel installations require permits and must comply with local building codes. Ensure that your installation meets all regulatory requirements to avoid complications.

Maintenance and Lifespan of Solar Panels

Solar panels require minimal maintenance, but a little care can go a long way in ensuring their longevity and performance.

Maintenance Tips

Regularly cleaning your panels to remove dust, dirt, and other debris is the most important maintenance task you can perform. Additionally, inspect the panels for any damage or shading that may affect their operation.

Maximizing Lifespan

The lifespan of a typical solar panel is around 25 years. To maximize this, it’s important to choose panels with a good track record for lasting performance and to ensure that your installation has been carried out with attention to quality and safety.


The decision to install solar panels is an investment in your energy independence and the future of our planet. By understanding the key factors to consider when choosing solar panels, you can ensure that your investment is both economically sound and environmentally responsible. With the right approach to efficiency, durability, and proper installation and maintenance, solar panels can be a stand-out addition to your home.

Call to Action

Ready to take the next step towards solar energy? Connect with our community of green energy enthusiasts and experts. Share this post with others considering the switch to solar, and stay informed for more tips, tricks, and insights to empower your solar-powered life.