But Enphase doesn’t stop there. Each day microinverters are taken from the production line and tested at Enphase laboratories in California and New Zealand. This rigorous, continuous testing ensures that Enphase microinverters stand the test of time.
This graph shows the thermal cycling test. It simulates over 25 years of operation in the type of conditions one would find outdoors on a roof. Enphase consistently outlasted string inverters, which failed in just a fraction of the 600 cycle test.
This chart shows that a string inverter has to be replaced at least once throughout the life of a system. In fact, string inverters are responsible for 50% of all solar lifecycle maintenance costs.