Solar Insure Manufacturer Vetting

As a long-term obligor on the warranty side, we take a rigorous engineering approach in reviewing the manufacturers we work with, especially on the inverter side. From our perspective, the inverter is the weakest link in the solar array when it applies to reliability and the effects on our loss ratio. If an inverter manufacturer becomes insolvent, we become responsible for replacement and/or payment for the failed component.
Some of our testing methods include:


Determine the minimum and maximum product operating temperature limits
Accelerate the aging process of the device under test by applying extreme temperatures
Test the device under various climatic and pressure (i.e., altitude) conditions
Burn-in the device under elevated temperatures at a high duration rate


Determine the effects of high/low humidity on the device
Find latent shorts on PCBs related to humidity (typically due to ion migration)
Accelerate the aging process of the device by applying extreme humidity conditions
Test the device under global humidity and pressure (i.e., altitude) conditions


Determine the maximum product operating vibration levels
Find mechanical defects early in the work-in-process cycle
Simulate global transportation conditions on the device

* Panel Perspective

From the panel perspective, we follow Tier 1 guidelines found here.