SunPower M Class represents the latest evolution in back contact solar technology—elevating energy independence to new heights.
With industry-leading efficiency, unmatched energy density, and a full 40-year warranty, SunPower M Class maximises the value of your investment in solar.
An expertly engineered design stands up to harsh environmental conditions to keep energy flowing for up to 40 years—and beyond.
Patented SunPower IBC cell technology, with a decades-long track record of commercial success, sets the foundation for continued industry leadership.
SunPower M Class provides homeowners with added elegance that comes from relocating metallic conductive wires to the back side of the cell—while complementing all-black cells with a black back sheet and frame to maximise aesthetic appeal.
Standard TOPCon1 | SunPower M Class | Why it matters | ||
|---|---|---|---|---|
 | Dimensions | 1762 mm x 1134 mm | 1762 mm x 1134 mm | Compact size maximises available roof space |
| Efficiency | Up to 23.5% | Up to 24.5% | Higher efficiency creates more energy to offset your utility bill |
 | Power | Up to 470 W | Up to 490 W | Higher power packs more energy generation potential onto your roof |
| Warranty | 12-25 Years Product Coverage 25-30 Years Power Coverage | 40-year Combined Product & Power Coverage | Longer warranted operation + service coverage maximise your ROI |
| Degradation rate | 0.40% / year | 0.25% / year | Lower degradation minimises performance loss over time |
 | Voltage under shade | >30 V | ~ 4 V | Lower voltage maintains lower cell temps in shade, preventing hotspots |
 | Temperature coefficient | –0.29%/°C | –0.26%/°C | Lower temperature coefficient helps panels perform better in high heat |
We offer the industry’s longest and most comprehensive warranty2 for a very simple reason—the unique design of SunPower M Class eliminates most of the causes of standard solar panel failures. And you can rest easy knowing you’re buying from a company that backs up their technology with a history of more than 40 years in solar.
Fact: SunPower M Class panels offer the lowest warranted degradation rate in solar at 0.25% annually—a rate that extends 10-15 years longer than all other panels.
| Residential Installations | SunPower M Class | Standard TOPCon2 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ProductCoverage for defects related to workmanship and materials | 40 years | 12-25 years | ||||||||||||||||
PowerHigher warranted power output protection at 89.3% in year 40. |
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ServiceRepair, replacement or refund for any defective panel, hassle free.3 |
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How does SunPower back contact separate itself from standard solar panels?
Are back contact solar panels better?
What kind of warranty and product reliability can partners expect?
Now that SunPower is part of TCL, how will the organisations work together to extend their back contact leadership?