Best Solar Panel Performance Warranties of December 2024
List of residential solar panels / companies with best performance warranties (degradation guarantee). Sorted by longest of solar panel performance warranty.
Maxeon Solar Technologies
Maxeon 6 SPR-MAX6-440
Efficiency22.8%
Power Rating440 watts
Product Warranty40 yrs
Performance Warranty40 yrs / 88.25%
Silfab Solar
Prime NTC SIL-430 QD
Efficiency22.1%
Power Rating430 watts
Product Warranty25 yrs
Performance Warranty30 yrs / 89.3%
REC Group
Alpha Pure-RX Protrust REC470AA
Efficiency22.6%
Power Rating470 watts
Product Warranty25 yrs
Performance Warranty25 yrs / 92%
Panasonic
EVERVOLT EVPV430HK2
Efficiency22.2%
Power Rating430 watts
Product Warranty25 yrs
Performance Warranty25 yrs / 92%
Qcells
Q.TRON BLK M-G2+
Efficiency22%
Power Rating430 watts
Product Warranty25 yrs
Performance Warranty25 yrs / 90.58%
Trina Solar
Vertex S+ Bifacial
Efficiency21.5%
Power Rating430 watts
Product Warranty25 yrs
Performance Warranty25 yrs / 89.4%
Tesla
Photovoltaic Module T405H
Efficiency20.6%
Power Rating405 watts
Product Warranty25 yrs
Performance Warranty25 yrs / 85.04%
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What are Solar Panel Performance Warranties?
The solar panel performance warranty covers performance degradation. The manufacturer guarantees that the panels will still perform above a certain level, after a certain number of years.
For example, 30 years / 80%, means the panels will still perform at 80% of their power rating, after 30 years. Learn about performance warranties.