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Anyone recording the total eclipse on their solar array?

Posted: Mon Aug 21, 2017 8:58 am
by RegGuheert
I'm interested to see a video of the production of someone's Enphase (or other) array as the Moon passes over. I'll try to post a video from our array if it is not too cloudy, but we are only getting about 80% of totality here.

Can someone who goes through totality please post a video (or several still images) showing what the eclipse looks like to your PV array? One thing I'm interested to see is how rapidly the production drops as well as how the inverters recover. I expect that those on the west coast will have their power collapse more rapidly than those on the east coast.

Re: Anyone recording the total eclipse on their solar array?

Posted: Mon Aug 21, 2017 9:15 am
by DuncanCunningham
my solar setup has APsystems inverters and it has some tools I can review. I'm in Salt Lake City so we are not under the full and total eclipse but I heard it said that we will get about 90% so it will be interesting to see how it relates in the numbers.

the moon moves over our view of the sun from 10:13am to 1pm.

I just looked up my array and the curve is still going up to the peak, which is typically at 11:30am and that is the time that we will have the max coverage here. The curve just started to fall off from it's usual path.. so it's making a difference already. The curve is usually straight up until about 11:30am were it tapers off to about 6,800watts.

Re: Anyone recording the total eclipse on their solar array?

Posted: Mon Aug 21, 2017 9:39 am
by DuncanCunningham
Image

see the flat line.. there is the moon starting to cover my array.

and at 10:40am

Image

Re: Anyone recording the total eclipse on their solar array?

Posted: Mon Aug 21, 2017 10:05 am
by DuncanCunningham
i took out my special sun glasses a few minutes ago to try and see if my phone could capture it.. not easy.. not large enough so I had to use zoom.

Image

and my array says this..

Image

Re: Anyone recording the total eclipse on their solar array?

Posted: Mon Aug 21, 2017 10:21 am
by DuncanCunningham
pictures at 11:15am

Image

and the array is noticing too

Image

Re: Anyone recording the total eclipse on their solar array?

Posted: Mon Aug 21, 2017 10:34 am
by RegGuheert
Very cool! It looks like the drop is about twice as fast as the morning rise, perhaps faster.

Re: Anyone recording the total eclipse on their solar array?

Posted: Mon Aug 21, 2017 10:39 am
by DuncanCunningham
11:33am and at it's peak here in Salt Lake City, UT.

What my phone camera sees
Image

What my phone camera sees with a filter
Image

It's nice and cool in, what is left of the sun.

and the array says
Image

down to 375watts right now. so it's like 8am in the morning at this time of year. Imagine if the moon did this on a daily basis.. we'd have global cooling on a big scale.

Re: Anyone recording the total eclipse on their solar array?

Posted: Mon Aug 21, 2017 11:01 am
by RegGuheert
Unfortunately thunderstorm clouds are moving into the area, so the ongoing eclipse is not very interesting here.

Re: Anyone recording the total eclipse on their solar array?

Posted: Mon Aug 21, 2017 11:33 am
by mnsolardriver
I'd planned on doing the same, but rain clouds moved into Minneapolis at the same time as the eclipse, so I can't see it. I do see my panels were dropping while the sun was out, but nothing cool to share. Hopefully others are luckier and we can see more arrays dropping down!

Re: Anyone recording the total eclipse on their solar array?

Posted: Mon Aug 21, 2017 12:43 pm
by wwhitney
Here in Berkeley, CA it was too cloudy for me to see the eclipse, but my PV array clearly noticed. I have a nice half bell graph of power production versus time, with a big bite taken out by the eclipse.

Unfortunately, I don't see an easy way to share it here. mynissanleaf.com doesn't allow uploads (maybe only for supporters?), Google Drive doesn't seem to allow direct links to an image file, and my ISP doesn't provide any web hosting. I'm not interested in using a third party image hosting site. If someone else can upload it or easily host it, PM me your email and I'll send it to you.

Cheers, Wayne