DMEGC solar panels review

With decades in the solar panel industry under its belt, DMEGC is a brand known for its high quality solar panels. 

It offers up to 30 years power warranty and claims only 0.4% power degredation.

Founded in China in 1980, DMEGC is a world-leading manufacturer of renewable energy products for residential, commercial and utility applications. It is well-known in Europe for its solar pv panels. 

Like some of its rivals, it has developed new pv technology to improve efficiency. The company says that its new tunnel oxide passivated contact (TOPCon) products, which combine a double-glass design with half-cut N-type cell technology, are exceptionally efficient. 

The claimed power output capacity ranges from 22.07% to 22.45%, which is at the high end of the ratings for solar panels. DMEGC's latest launches include the 570-580 W TOPCon solar module series.

We’ve tested solar panels from DMEGC 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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DMEGC solar panels reviewed

DMEGC reliability and warranty

Note: Based on the most efficient domestic monofacial (one-sided) solar panel we've tested.

Where are DMEGC solar panels made?

Around 80% of panels available in the UK are made in China. While DMEGC is a Chinese company, its panels are made in various locations.

DMEGC solar panel test results

We’ve tested three DMEGC 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 these solar panels we've tested in the table - scroll down to see how each panel performed in our detailed lab tests. 

The UK solar panels market is fast moving and panels don’t tend to stay around too long as technology and performance are updated, which is why we currently don’t award Best Buys for specific models. Instead, we use our results to give you an overall steer on how a particular brand compares.  

Only logged-in Which? members can view our solar panel test results below.

Join Which? to get instant access to the solar panel test results for the three panels we’ve tested and our verdict on DMEGC as a whole.

Visit the DMEGC website to view the options available for your home.

Our solar panel tests explained

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. But rather than simply use test results, 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.

We'll be adding more panels to our published test results as we get them.

Find out more about how we test solar panels.

How to buy DMEGC solar panels

As a domestic customer, you’ll need to buy solar panels through an installation company. In  In a 2026 survey of solar panel owners* nearly half told us 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. 

Our tests and brand reviews can help you choose the best brand to go with.

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 January 2026 online Combo survey of 948 solar panel owners who had them installed in the last three years review