I'm very interested in extending the number of useful hours my total system generates per day. My primary array faces not-quite south (220 degrees) To that end I
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Estimating generation per hour with east/west arrays
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PV watts https://pvwatts.nrel.gov/ will be the tool to use to test different layoutsPowerfab top of pole PV mount (2) | 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
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Originally posted by jtc331 View PostI'm very interested in extending the number of useful hours my total system generates per day. My primary array faces not-quite south (220
Please edit.
What model and quantity of Solar Panels currently in the South array?
What model Inverter are you using?
Approx Long & Lat?
My friend is installing 8.25 kW of Solar Panels with a 5 kW Inverter.
ALL 30 PV Panels will point due South - because that is best.
I had thought ...
10 panels point SE
10 panels point South
10 panels point SW
was better because "more hours", but actually ( SW+S+SE ) is LESS Yearly kWhrs of production vs ALL SouthLast edited by NEOH; 08-17-2019, 05:41 PM.Comment
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Originally posted by NEOH View PostYour message was truncated at the special character that you included - maybe, the degrees symbol ?
Please edit.
Originally posted by NEOH View PostWhat model and quantity of Solar Panels currently in the South array?
What model Inverter are you using?
Approx Long & Lat?
Originally posted by NEOH View Postwas better because "more hours", but actually ( SW+S+SE ) is LESS Yearly kWhrs of production vs ALL South
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Originally posted by Mike90250 View PostPV watts https://pvwatts.nrel.gov/ will be the tool to use to test different layouts
(I realize that ended up not originally being in my post since it got cut off when I used the degree character).Comment
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Originally posted by jtc331 View Post
Fixed.
I currently have 22 LG 335W panels in the primary array with a SolarEdge 7600 watt (storedge model) inverter; Greenville, SC is the location.
That's true, but my aim isn't *total* number of solar hours, but rather number of hours per day at some "minimum" amount (say, 2 to 3 KW).
If yes ... then add more panels pointed due-South.
Or are you saying , you can only add the new panels facing east and/or west ?Last edited by NEOH; 08-17-2019, 10:54 PM.Comment
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Originally posted by NEOH View Post
Are you interested in maximizing "Kilowatt-Hours produced per Year" ?
If yes ... then add more panels pointed due-South.
Or are you saying , you can only add the new panels facing east and/or west ?Comment
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Please help me understand why you want to maximize "daily useful hours" and not "total yearly production".Comment
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Originally posted by jtc331 View Post
I'm saying I want to maximize the number of hours of a day that I generate useful power, even if that means slightly less total kWh generated in a day.Last edited by J.P.M.; 08-18-2019, 11:36 AM.Comment
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Originally posted by NEOH View PostPlease help me understand why you want to maximize "daily useful hours" and not "total yearly production".Comment
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Originally posted by J.P.M. View Post
Is what you pay for the additional PV generated electricity of any concern in all this ? If so, how much ?Comment
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Originally posted by jtc331 View Post
Because I'm interested in optimizing for total amount of consumption generated by PV not just total PV output. Part of that is just "it's interesting" and a hobby, but also because I don't believe the current regulatory system of net metering makes macroeconomic sense (see: duck curve, etc.). So I want a system that makes sense even outside of those current constraints. And you can tackle that two ways: 1.) with storage, and 2.) by generating earlier in the day (east arrays) and later in the day (west arrays). You could do (2) and at the same maximize total annual output with trackers, of course, too, but that's significantly more complexity that won't make sense in many cases when panels are so cheap.
Given that you already have the primary array pointed South-West ...
then you need to add some Panels pointing East.
Can you do that?
Is this a Roof Mount with limited locations or a ground mount?Comment
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Originally posted by NEOH View Post
OK.
Given that you already have the primary array pointed South-West ...
then you need to add some Panels pointing East.
Can you do that?
Is this a Roof Mount with limited locations or a ground mount?Comment
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