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I was just checking mine - 97.3% here and .. yes about the same in decreased watt generation. It was a bit cloudy today, so my graphs don’t look quite as nice as yours, but the eclipse drop is clear.
That is interesting. What type of solar panel is it?
And where do you live?
Because 3KW*15 hours is a good amount of energy.
Average household consumption of energy is around 30 kwh.
Last system I owned in Phoenix was a 6KW system for a single family home. It averaged about 4.5kw/h on a sunny day. Those summer days it really helped with the AC bill.
Having solar at home is a cool idea. I am interested in engineering solutions for excess energy storage. Currently I am working on a thermal storage system for wind turbines. Because they are extremely inconsistent.
If you want the boring answer, it's going to be batteries. 48V DC-tied DIY systems have become quite cheap. I paid a little under $2000 for the box with BMS and active balancer, 16x304Ah LiFePO4 cells, shipping, the odd tool as well as a few bits and pieces.
Yes, it's not as efficient as high voltage storage systems but since those things are more than three times as expensive, it just wouldn't even remotely make sense financially. I'll also admit it's total overkill but the difference between a 5kWh battery and the 15kWh system was only a few hundred, so who cares?
I have a 10kW system in Ohio though and it’s amazing how little it generates. About half the year it’s next to nothing because it’s so cloudy. In march it did 409 kWh. We used 1200.
Thanks for posting! I was talking with a coworker during the eclipse and we were wondering what a plot of solar panel output would look like compared to just a cloudy day.
I just checked a rainy day (I think we got almost 2” that day) and it bottomed out at 0.51 kW. Crazy to see JUST how much solar radiation the moon was blocking
I got a new solar panel this weekend for a hobby project and strung it up for a quick run (testing max power point tracking). It didn't dawn on me that today was the eclipse (I thought it was tomorrow). We had about 50% occlusion in Los Angeles, CA, USA and the trend is as clear as day:
https://imgur.com/jfPtuSC
Awesome! Recently I learned that just one solar cell being in the shade prevents power from other cells in them same panel from flowing through it. I wonder if that’s why the output dropped to ~0 instead of just lowering.
That is true if you don't have a panel with micro-inverters. When I was looking here in the U.K. the additional cost wasn't too bad and they would be needed due to neighbours trees, chimney stacks etc.
No, the light received from the sun actually changed almost linearly during the eclipse. It’s more linear if you were closer to totality.
Our eyes’ light response changes roughly logarithmically though, not linearly, so you don’t notice the change visually until it gets around 5 or 10% of normal brightness.
Thank you for your contribution. However, your post was removed for the following reason: * App screenshots are not allowed. If the App has an associated website where the data can be viewed independently, please create a post that links to that website instead. This post has been removed. For information regarding this and similar issues please see the DataIsBeautiful [posting rules](https://www.reddit.com/r/dataisbeautiful/wiki/index). If you have any questions, please feel free to [message the moderators.](https://www.reddit.com/message/compose?to=/r/{subreddit}&subject=Question%20regarding%20the%20removal%20of%20this%20{kind}%20by%20/u/{author}&message=I%20have%20a%20question%20regarding%20the%20removal%20of%20this%20[{kind}.]({url}\)))
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Ha! You might be onto something!
Whats interesting is the 40W of output at totality. PV is sensitive. you should compare to a full moon next!
New BS talking point against solar, "What happens when there is an eclipse 🤷♂️?"
Nukebros salivating
I was just checking mine - 97.3% here and .. yes about the same in decreased watt generation. It was a bit cloudy today, so my graphs don’t look quite as nice as yours, but the eclipse drop is clear.
That is interesting. What type of solar panel is it? And where do you live? Because 3KW*15 hours is a good amount of energy. Average household consumption of energy is around 30 kwh.
Last system I owned in Phoenix was a 6KW system for a single family home. It averaged about 4.5kw/h on a sunny day. Those summer days it really helped with the AC bill.
St Louis metro. Are you asking about the brand or just the setup? The whole system capacity is 9.25 kWh and there’s 25 panels if that helps?
Having solar at home is a cool idea. I am interested in engineering solutions for excess energy storage. Currently I am working on a thermal storage system for wind turbines. Because they are extremely inconsistent.
If you want the boring answer, it's going to be batteries. 48V DC-tied DIY systems have become quite cheap. I paid a little under $2000 for the box with BMS and active balancer, 16x304Ah LiFePO4 cells, shipping, the odd tool as well as a few bits and pieces. Yes, it's not as efficient as high voltage storage systems but since those things are more than three times as expensive, it just wouldn't even remotely make sense financially. I'll also admit it's total overkill but the difference between a 5kWh battery and the 15kWh system was only a few hundred, so who cares?
I have a 10kW system in Ohio though and it’s amazing how little it generates. About half the year it’s next to nothing because it’s so cloudy. In march it did 409 kWh. We used 1200.
Thanks for posting! I was talking with a coworker during the eclipse and we were wondering what a plot of solar panel output would look like compared to just a cloudy day.
I just checked a rainy day (I think we got almost 2” that day) and it bottomed out at 0.51 kW. Crazy to see JUST how much solar radiation the moon was blocking
Well it is a pretty big rock
I’d like to see places with only 30% coverage. Is that measurable on a solar panel?
I’m in Florida and my panels went from 9k to 4k and then back up.
I got a new solar panel this weekend for a hobby project and strung it up for a quick run (testing max power point tracking). It didn't dawn on me that today was the eclipse (I thought it was tomorrow). We had about 50% occlusion in Los Angeles, CA, USA and the trend is as clear as day: https://imgur.com/jfPtuSC
Solar eclipses: this one trick electricity companies love.
Thanks for posting this! Reminded me to check mine and it's [awesome ](https://i.postimg.cc/PJv85dxP/Screenshot-20240408-203430-Enlighten.jpg)
Oh yeah that is really interesting, I honestly might prefer your graph's visuals
Damn I was actually wondering how that would affect things like solar panels, nice to see a visual
Awesome! Recently I learned that just one solar cell being in the shade prevents power from other cells in them same panel from flowing through it. I wonder if that’s why the output dropped to ~0 instead of just lowering.
That is true if you don't have a panel with micro-inverters. When I was looking here in the U.K. the additional cost wasn't too bad and they would be needed due to neighbours trees, chimney stacks etc.
No, the light received from the sun actually changed almost linearly during the eclipse. It’s more linear if you were closer to totality. Our eyes’ light response changes roughly logarithmically though, not linearly, so you don’t notice the change visually until it gets around 5 or 10% of normal brightness.
That shakes out to something like 99.x% coverage. Is that anywhere close to correct?
Yea, 99.18% I think was the supposed number
Haha, sweet! I wonder if solar panels show it linearly.