Testing Solar Panel Efficiency

SystemSystem Posts: 2,511 admin

How would I go about testing the efficiency on a solar panel? Thanks.


  • nielniel Solar Expert Posts: 10,300 ✭✭✭✭
    Re: Testing Solar Panel Efficiency

    is it really the efficiency that you are going for or do you just want to be sure a panel is putting out what it should? i ask this because the efficiency is what a pv will output in relation to its area in comparison to the solar intensity falling on that area.
  • System2System2 Posts: 6,290 admin
    Re: Testing Solar Panel Efficiency

    i was looking to test efficiency. i know you get it when dividing the area by watts, so would you first test to see how many watts the panel is putting out then divide 1000 by that number?
  • mike95490mike95490 Solar Expert Posts: 9,363 ✭✭✭✭✭
    Re: Testing Solar Panel Efficiency

    First, you neeed to calibrate the sun, so you know for sure what you are illuminating it with. Outdoors at noon can vary quite a bit from day to day.
    Powerfab top of pole PV mount | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

    solar: http://tinyurl.com/LMR-Solar
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