Solar Panel Questions; Can You Replace Just One Solar Panel?

Solar energy systems are durable and designed to last for decades, but like any technology, individual components can sometimes fail or sustain damage. If you have a solar array and one panel becomes faulty or damaged, you might wonder whether it’s possible to replace just that one panel. The answer is yes, you can replace a single solar panel, but there are several factors to consider to ensure your system continues to operate efficiently and effectively.

When to Consider Replacing a Single Solar Panel

1. Damage or Malfunction

Physical damage from weather events, falling debris, or accidents can necessitate the replacement of a single panel. Malfunctions due to manufacturing defects or wear and tear over time might also make it necessary to replace a panel.

2. Degradation

Over time, solar panels experience a natural degradation in performance, typically around 0.5% to 1% per year. If one panel is degrading significantly faster than the others, it might be worth replacing it to maintain overall system efficiency.

Factors to Consider

1. Compatibility

When replacing a solar panel, it’s crucial to ensure that the new panel is compatible with your existing system. This means matching several key specifications:

  • Wattage and Voltage: The new panel should have similar wattage and voltage ratings to the existing panels to maintain balanced performance.
  • Physical Size: Ensure the new panel fits in the existing mounting system.
  • Connector Type: The connectors should be the same or compatible to avoid additional modifications.
2. Performance

Mismatched panels can lead to inefficiencies. In systems with multiple panels connected in series (a common setup), the output is limited by the lowest-performing panel. Therefore, replacing an old panel with a new, more efficient one might not yield the expected performance boost unless all panels are similarly upgraded.

3. Warranty and Support

Check the warranty on your existing system. Replacing a panel might affect your warranty, so it’s worth consulting with the manufacturer or installer. Additionally, working with a reputable installer ensures you get a panel that integrates well with your system.

Steps to Replace a Solar Panel

1. Diagnosis

First, confirm that the issue is with a specific panel. This might involve visual inspection for physical damage or using a multimeter to test electrical output. Many modern systems also have monitoring software that can identify underperforming panels.

2. Selecting a Replacement

Choose a replacement panel that matches the specifications of your existing panels. It’s often best to consult with the original installer or manufacturer to get a compatible panel.

3. Professional Installation

While replacing a solar panel might seem straightforward, it’s recommended to have a professional handle the installation. This ensures that the panel is correctly integrated into the system, all electrical connections are secure, and safety standards are met.

Benefits of Replacing a Single Panel

1. Cost-Effectiveness

Replacing one panel is significantly cheaper than replacing the entire array. This allows you to maintain system performance without a substantial financial outlay.

2. System Longevity

By addressing the issue promptly, you can prevent further degradation or inefficiencies, thereby prolonging the life of your entire solar power system.

3. Sustained Energy Production

Keeping your system fully operational ensures you continue to generate the maximum possible amount of renewable energy, supporting both your energy needs and environmental goals.


Replacing just one solar panel in your array is entirely feasible and often the most practical solution for maintaining system performance. By considering compatibility, performance, and professional support, you can ensure that your solar energy system remains efficient and effective. Regular maintenance and prompt replacement of faulty components will help you get the most out of your investment in solar energy.

Other blog posts

As a company, we want to try and stay informed about the latest information and technologies available within the renewables and electrical industry.

Therefore, we like to share this information with our clients, so see some useful information below.

Shining Through the Clouds: Debunking Myths About PV Solar Panel Efficiency on Cloudy Days

Shining Through the Clouds: Debunking Myths About PV Solar Panel Efficiency on Cloudy Days

However, a common misconception persists: can PV solar panels still produce electricity on cloudy days?

Go2 Renewable Electrical Services: Leading the Charge in Sustainable Energy Solutions

Go2 Renewable Electrical Services: Leading the Charge in Sustainable Energy Solutions

Specialising in installation, maintenance, and repair work, Go2 Renewables provides comprehensive services that cater to the growing demand for eco-friendly energy alternatives.

The Benefits of EV Charging for Businesses

The Benefits of EV Charging for Businesses

As the world increasingly shifts towards sustainable practices, electric vehicles (EVs) have become a significant part of the conversation.

Contact image

Get In Touch

We provide up-to-date, cost-effective products and solutions that make renewwable energy accessible to all.

Fill out the form below, and our experts will provide personalized recommendations and answer any of your questions.