Hi:
My May export for the May billing period (24th to the 24th) was 779KWH's, which is pretty high. Not sure if its the highest ever because in the days before EV's, I used to get $400 and $500 dollar checks from PPL.
I am still testing my barn array (East/West) on the ground (Messy) and I just upped the string from 8 to 9. Tomorrow I will put the other 9 down in parallel (5800watts) and see if the charge controller can handle at its maximum DC rating 4800watts. The voltage under MPPT hits around 490-500VDC. Max MPPT voltage is 510VDC, so I am just under the wire. It will still run from 510-550VDC but not under MPPT. OCV is about 560-570'ish. Max feed voltage is 600VDC. I may have to put some Zenier diodes across, rated at about 560VDC, just to beginning to "clip off" if it heads for 600VDC on cloud edges if on "standby" no load, or off grid with full batteries.
My arrays are 11.77 tracking and what was on the ground for May, 2.6KW flat.
I love problems that are related to too much SUN...LOL...
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william fitch
Owner
www.WeAreSolar.com------------------------------
Original Message:
Sent: 06-03-2023 12:05 PM
From: Mike Curran
Subject: Unbelievable sunshine string in May!
I had similar results for May, best May ever for PV here in NE Ohio. Not as good as yours Bill but I have some shading issues and (I believe) less capacity at 16.5kw. Total net export for May was 891 kwh
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Mike Curran
Retired EE
Original Message:
Sent: 06-01-2023 05:48 AM
From: william fitch
Subject: Unbelievable sunshine string in May!
Just thought I would expose the incredible sunshine we have had here in central PA this past month. I broke a new production record for any month and year, 2591KWH's. We have had PSD's (Perfect Solar Day) or near PSD level sunshine for more than 2 weeks straight. I feel like what it must feel like, in the sunny mid-west for places like Arizona or New Mexico where its always sunny.
The energy out to the grid has been racking up 60-80 KWH's per day. My check at the end of May from PPL was $207 this year. It is the first time I have gotten over $100 from them since we changed over to EV's, using all our extra for driving. As I put more production on line at current rates, I should eventually get over $1000 from them each year when I break over 30MWH's a year total produced.
It may be coming to an end though after today. Showers in the forecast. We'll see....
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william fitch
Owner
www.WeAreSolar.com
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