Trina Solar solar panels review

Trina Solar makes and sells solar PV panels for homes and businesses, as well as energy storage for large commercial customers. 

It's based in Shanghai, China, and says it spans more than 180 countries and regions globally.

We’ve tested solar panels from Trina Solar and found out more about the company to help you work out if these are the right solar panels for your home.

You can also head to our guide to solar panel brands compared to see more of the options available.

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Trina Solar solar panels reviewed

Trina Solar reliability and warranty

Notes: based on the most efficient panel we've recently tested

Where are Trina Solar solar panels made?

Around 80% of panels available in the UK are made in China, including those from Trina Solar.

Trina Solar panel test results

We’ve tested three Trina Solar solar panels to see how they fare in typical UK conditions. 

Our independent tests let us assess how the panels compare to the claimed stated performance when new, and following solar exposure. Our tests also reveal how much the panels degrade as they age.

Compare tech specs for the solar panels we've tested in the table - scroll down to see how each panel performance in our detailed lab tests.

The UK solar panel market is fast moving and panels don’t tend to stay around too long as the technology improves all the time. That's why we don't currently award Best Buys for specific models. Instead, we use our results to give you an overall steer on how a particular brand compares. 

Only Which? members can access our solar panel test results. Log in now to see how Trina Solar fared in the lab.

If you're not a Which? member, join Which? to get instant access to our solar panel test results and our expert verdict on the Trina Solar brand.

Visit the Trina Solar website to view the options available for your home.

Trina Solar solar panel owners' opinions

Many of the Trina Solar panel owners we heard from in our survey* told us that they like their appearance. Some mentioned that they liked that they are self-cleaning.

Half of owners in our survey said they chose Trina Solar because it was the only solar panel brand their installer fitted. Some 13% of owners said they chose the brand based on good reviews by industry experts or from several brands recommended by their installer.

Lots of people also told us they're pleased with the panels' electricity production, finding them efficient.

Our solar panel tests explained

We started testing solar panels in 2026. 

Testing solar panels is complex and takes a lot of time, not least as the testing requires plenty of hours of sunlight. We’ve teamed up with our European Consumer colleagues to test panels in a specialist facility in Spain that’s been testing solar panels for decades. We test each panel according to the standards that regulate and control these products. 

We know that solar panels will perform differently in the UK than in Spain. So rather than simply using the Spanish test results as they come, where applicable we model the results to daylight conditions across a number of UK cities to see how they would perform in UK homes.

Each panel is inspected for defects before testing and installed using specific tilt angles and orientations for direct sunlight exposure that’s directly comparable across all panels we test.

Once installed we run a series of tests. These include an initial solar radiation exposure; a maximum power determination test; an outdoor exposure test and a test to check for any current leakage in wet conditions. Special images are taken to detect minute defects and cracks created during the initial test programme. We then repeat the tests to work out how much the panel's performance degrades over time and if the defects affect ongoing performance.

Find out more about how we test solar panels.

How to buy Trina Solar solar panels

As a domestic customer, you’ll need to buy solar panels through an installation company. In a January 2026 survey of solar panel owners** nearly half told us that they had used an independent solar panel installer, while 25% used a larger solar panel company for their work.

Most installers will only work with one or two brands; almost three quarters of the solar panel owners in our survey only had one brand of panel offered by their chosen installer, while 14% had a choice between two brands. It’s worth getting a few quotes from different installers so that you can compare what brands are being offered, as well as comparing the installers themselves. 

Trying to compare solar panel installers? Our guide to how to choose a solar panel installer will help you ask the right questions. 

* Data based on a April 2024 online survey of more than 2,000 Which? members who have solar panels on their home. 

**Data based on a January 2026 online Combo survey of 948 solar panel owners who had them installed in the last three years.