The modules, under a resistive load condition, are placed under an irradiance between 600 – 1000 W/m2
within a temperature range of 50°C ± 10°C until stabilization occurs, which is when the measurements of
Pmax from two consecutive periods of exposure of at least 43 kWh/ m2 each satisfied the condition
(Pmax – Pmin)/P(average)10%) by simply repeating
the hot-spot test…
Note 2 of the Retest Guideline quotes “…Final light soaking 10.19 test is compulsory for all test samples”,
but in practice it is quite often ignored by the test labs, with the result of extending sensibly increased
power without putting under test the main aspect of thin-film technology: power stabilization.