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diy solar

Be able to harvest 5610w out of 6630w solar panels today, it's 84.5%, what's yours ?

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new off grid

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Jan 27, 2020
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Hello every one,
I've running off grid since 2019
bought 10kwh Batt from China for 3k, compare to 10 Grand here back then ( still running very strong )
keep expanding along the way...,
now, the system are 17 panels x 390w = 6630 w
and 3/48v Batt of total 20kwh
today I observed the 2 charge controllers showing 30amp and 80amp, a 110 amp total
110 x 51v = 5610w
it's around almost 85% out of the max, at 11:30 Am/ 57degree outside, Bay Area
90% plus is possible approaching summer ?
what's is your # ppl ?
Lets get that free Light !!
 
MPPT 1 is 7S2P 370W panels angled for this time of year aimed S. (just over the 22A max)
MPPT2 is 9S2P 315W panels angled poorly with 1 string on the S roof, the other on the W roof. (just over the 5500W max)
Screenshot_20240324-152234.jpg
 

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new off grid said:
Hello every one,
I've running off grid since 2019
bought 10kwh Batt from China for 3k, compare to 10 Grand here back then ( still running very strong )
keep expanding along the way...,
now, the system are 17 panels x 390w = 6630 w
and 3/48v Batt of total 20kwh
today I observed the 2 charge controllers showing 30amp and 80amp, a 110 amp total
110 x 51v = 5610w
it's around almost 85% out of the max, at 11:30 Am/ 57degree outside, Bay Area
90% plus is possible approaching summer ?
what's is your # ppl ?
Lets get that free Light !!
Click to expand...
My SMA inverter screen reported that my 14.5 year old 3150 W system was producing a steady 3219 Watts at 1:30 this afternoon. Sharp panels, 175 Watt x 18.
 
On one set I got over 100% at 414 watts for 400 watts of panels.

For the other doesn’t auto log, but I saw it at 55% with 10 kW of panels producing 5.5 kW production.
 
2S3P combination of 4x 15yo 37Vmp 300W panels pointed SW at 30deg elevation and 2x 5yo 41Vmp 350W pointed SE at 60deg elevation, witch some periodic shade. total power peaks at about 1400W/1900W, so 75%. generates 7-8kWh on a good day
 
rustyrotors said:
2S3P combination of 4x 15yo 37Vmp 300W panels pointed SW at 30deg elevation and 2x 5yo 41Vmp 350W pointed SE at 60deg elevation, witch some periodic shade. total power peaks at about 1400W/1900W, so 75%. generates 7-8kWh on a good day
Click to expand...
that's pretty good
 
It was a good day. The 5180W of NE Solar on MPPT1 continue to impress, wish the MPPT were rated for 25A.
Screenshot_20240324-211037.jpg
42OhmsPA said:
MPPT 1 is 7S2P 370W panels angled for this time of year aimed S. (just over the 22A max)
MPPT2 is 9S2P 315W panels angled poorly with 1 string on the S roof, the other on the W roof. (just over the 5500W max)
Click to expand...
 
I checked my charge controller yesterday; one array of six 380 watt panels put out 2,980 Watts an average of 496 watts per panel. This was just a peak, but I'd say I got my money's worth.
 
Showed 4095 watts with a nameplate of 5180 watts. Just under 80%.

This occurred at 9:15 am. By that time the array had replaced 110 ah and batts were at 100%.

We rarely see much over 85% of nameplate since the batteries get charged to 100% so early in the day.

Modules are CS 370 watt and are 5 years old. Batteries are lithium, also 5 years old. Closed loop system.

Array is on a horizontal tracker oriented N-S.
 
I have 20 400w (8kw) CS1U panels.
vmp 44.1
imp 9.08

MPP1 is 6S east facing (2.4kw) which regularly hits 90% or higher I have even seen it hits 2.5kw a few times.

MPP2 is 7S2P (5.6kw) south facing which never gets more than 80% and I can't figure out why.

1000003817.jpg
 
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