RSK Solar Energy

UTL vs Rayzon Solar panels

On efficiency the two are level to within a tenth of a point: Rayzon's L'lios TOPCon 600 Wp lists 23.25%, UTL's 630 Wp TOPCon 23.32%. The difference is the product warranty, where Rayzon lists 15 years against 10 on UTL's.

Updated 27 September 2026

Rayzon is a Surat panel maker with a range of TOPCon modules. Against UTL the efficiency figures sit side by side, so the warranty and the rest of the system decide it.

At a glance

From each brand’s published figures, checked 27 September 2026
UTLRayzon
Module compared630 Wp G12R TOPConL’lios TOPCon 600 Wp
Module efficiency23.32%23.25%
Performance warranty30 years (UTL TOPCon modules)30 years, 80% power
Product warranty10 years (UTL’s 520 W DCR panel)15 years on materials

Module efficiency of TOPCon panels, as published

  • UTL 630 Wp G12R TOPCon Bifacial 23.32%
  • Rayzon L'lios TOPCon 600 Wp N-type TOPCon 23.25%
  • UTL 545 W TOPCon Bifacial 22.74%
The top two bars are a tenth of a point apart, which changes almost nothing on a home roof.
Show as a table
Module efficiency of TOPCon panels, as publishedEfficiency
UTL 630 Wp G12R TOPCon (Bifacial) 23.32%
Rayzon L'lios TOPCon 600 Wp (N-type TOPCon) 23.25%
UTL 545 W TOPCon (Bifacial) 22.74%

Choose Rayzon if

  • A longer product warranty is what you weigh most. Rayzon lists 15 years on materials.

Choose UTL if

  • You want the panels with the inverter and battery from one brand, priced as one system.
  • You need DCR panels for the PM Surya Ghar subsidy. UTL makes DCR TOPCon modules; see DCR and non-DCR panels for why that matters.

Where RSK Solar Energy fits

RSK Solar Energy is a UTL Solar distributor in Mohali. We do not stock Rayzon, so we can quote the UTL side. Work out the size your bill needs in the solar calculator.

Sources

Questions we are asked

Which is more efficient, UTL or Rayzon?

They are level for practical purposes. UTL's 630 Wp G12R TOPCon module lists 23.32%, and Rayzon's L'lios TOPCon 600 Wp lists 23.25%.

What warranty do Rayzon panels carry?

Rayzon lists 15 years on materials and 30 years on power for its L'lios TOPCon 600 Wp. UTL lists 10 years product warranty on its 520 W DCR panel and 30 years on performance for its TOPCon modules.

Does RSK Solar Energy sell Rayzon?

No. RSK Solar Energy is a UTL Solar distributor. We can quote UTL panels and help you compare them with a Rayzon quote.