Evergreen Panel Question?

biznitch15
biznitch15 Registered Users Posts: 7 ✭
in Solar Beginners Corner #1
Novice and Dumb Question?

How Much can FOUR Evergreen 195W panels power up with an off grid sYstem (average) ?

(All i need is a Simplified Answer, I'm still a Beginner) I'll get into Specs Later, Thanks!
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  • mike95490
    mike95490 Solar Expert Posts: 9,583 ✭✭✭✭✭
    #2
    Re: Evergreen Panel Question?

    You can harvest about 80% of your panel rating. (780W) x .8 = 625W

    You can store that all week and run a micorwave oven for an hour, or run a small light forever. It all depends on your load you want to power
    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
    gen: http://tinyurl.com/LMR-Lister ,

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  • System2
    System2 Posts: 6,290 admin
    #3
    Re: Evergreen Panel Question?

    Maybe 100 watts continuously if you had 1000 Amp-hours of battery, depending on... everything.
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  • icarus
    icarus Solar Expert Posts: 5,436 ✭✭✭✭
    #4
    Re: Evergreen Panel Question?

    Just for comparison, we have ~200 watts of panels, and we use ~ 36 amp/ hours a day (12vdc) or about 450 watt hours, or 7.5 hours with ONE 60 watt bulb! 3 days without sun and we have to run the generator to keep the batteries above 80% soc.

    Tony
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  • BB.
    BB. Super Moderators, Administrators Posts: 33,634 admin
    #5
    Re: Evergreen Panel Question?

    Assuming near Oakland CA---195watt x 4 off grid system with fixed mounts, optimum siting, assuming inverter AC output... Use this link, and for derating use 0.52 to account for flooded cell battery inverter losses:

    1kW of panels (program does not go any smaller than 1kW):

    80-100kWhr per month (summer)
    50-60 kWhr per month (winter)

    Multiply the above by 4x195w/1,000w (your panel size) and by 1/30 for daily power:

    80-100=> 2-2.6 kWhr per day (summer)
    50-60=> 1.3-1.5 kWhr per day (winter)

    That is about $0.15 to $0.30 of electricity per day.

    -Bill
    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
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