Florida sun not as good as in past

[keepsake]

Been having a continued time of lots of sun. Florida, zip 33523. Latitude 28 deg. Not seeing the production I did a year ago. Is anyone here seeing hazy like performance lately (last 5 days). Not hitting anyone of previous max values. Seeing like 9100 watts instead of hitting the 10000 watts in the past. And this is on multiple systems.

 

[740GLE]

How clean are the panels?

We’re you seeing 10kw this exact time last year?

 

[keepsake]

Cleaned in past year. Even new panels from last year install are showing sub-max output. I know the angle to the sun is lower, but I am comparing to exactly 360 days ago peak production

 

[scoharri]

Damn climate change!

 

[740GLE]

Cleaned the panels in the past year? Or just cleaned and verified lower production.

I’d invest in elbow grease give ‘em a nice shine then start complaining if production is down.

 

[keepsake]

Now today the production is through the roof ! What a difference a day makes. Sun like yesterday, but rain and a front passed overnight. Previous 4 days were sub par, today hitting a year ago numbers.

 

[sunshine_eggo]

Now today the production is through the roof ! What a difference a day makes. Sun like yesterday, but rain and a front passed overnight. Previous 4 days were sub par, today hitting a year ago numbers.

You've just discovered why comparing anything but averages is almost always meaningless. You can only compare days if you're also tracking daily irradiance.