Discover the top Tier 1 solar panel manufacturers of 2025 with this updated list. Note: This Tier 1 ranking is based solely on the financial stability of the manufacturers and should not be interpreted as a measure of solar panel performance or quality. When selecting solar panels for your project, it's important to consider additional factors such as efficiency, warranty. Photovoltaic Brand Lab Brand Rankings is the only data research report in China that is supported by a multidimensional evaluation system and has been released annually since its first successfully publication in 2012. This multidimensional evaluation system provides an accurate reflection of. Solar modules are evaluated in the Renewable Energy Test Center annual PV Module Index. Although Chinese companies continue to dominate, changes in rankings and technological strategies reveal a deep transformation within the solar sector. From pv magazine USA SolarReviews, an informational site and provider of the Solar Calculator for residential PV savings estimates, has released a report.