How much does the efficiency of a solar panel drop in its lifetime?



  1. 0 Votes

    It must not be very much, considering that many manufacturers guarantee at least 90% of a panel’s rated power output for 10 years and at least 85% for 25. As far as I can tell, efficiency is more affected by the photovoltaic cells’ temperature and whether or not the panel is clean than by the system’s age.

Please signup or login to answer this question.

Sorry,At this time user registration is disabled. We will open registration soon!