Hello,
Lemme know if there is a better place to post.
Some basic facts:
-Located in Bay Area, Nor Cal
-System installed ~3 month ago
-3 PW+
-25 Panels
The issue I am having is that the system has slowly been producing less and less power each day for the last month. About 1 month ago it pulled down 54K in one day. Yesterday (record setting temps) it only pulled down 30K. That being said it feels like something is wrong and I am looking for some basic feedback and troubleshooting help before I engage Tesla (ugh).
I am new to all of this and have a lot to learn but so far here some reasons why the system might not be producing as much as it used to. I am wondering if anyone has any insight as to what might be going on and would love any advice on how to troubleshoot?
1. Panels are dirty - I have a large landscaping project going on which has involved a lot of excavation and moving around of dirt and gravel etc. Some of this activity has been directly next to the house where the panels are. When I look at the panels they even look dirty. According to research dirty panels can reduce generation by ~3%. Seems like this might be contributing to the problem but certainly does not explain a loss of ~40% . Maybe some of mine are just super dirty?
QUESTION: Can major landscaping around the panels contribute to such a decrease?
2. I have been throttled and am no longer allowed to generate as much power as when it was first installed. To be clear the system has been turned on since Day 1 and I have been feeding back into the grid since day 1. It seems like it was not supposed to be turned on and feeding back into the grid before PTO but thats they way Tesla left it. I charged the car as much as possible to avoid giving power to PG&E for free. The PTO process took 3 months to sort out with much back and forth with both PG&E and Tesla. For some reason I had to send multiple recent PG&E bills to Tesla - probably their own disorganization.
QUESTION: Does Tesla / PG&E limit solar production before the PTO process so as to limit me in what I can generate before PTO? I have read about other people being throttled before the PTO process. I have also read that “the system will not generate as much as it can before PTO is received”. This makes me believe I was being throttled while waiting for the PTO which I just got 1 week ago.
3. The extreme heat spell we are going through is currently effecting how much I can produce. Earlier in the summer is was not as hot. Not its extremely hot which I understand effects the production from the system. I read yesterday that in extreme heat the system can product up to ~%25 less. Seems like this could be a real possibility BUT this morning it was not as hot as yesterday and I was producing a similar amount in the morning.
QUESTION: Are other people in CA seeing a large decrease in solar production during this extreme heat wave?
4. Something is wrong with my system. This seems less likely because the system is brand spanking new AND I can see a gradual decrease over the past month. If something broke in the system I would expect to see that clear drop off at that specific point in time.
QUESTION: Based on the symptoms outlined here does this sound like a system problem? IE something is not working as expected?
Thanks for any and all enlightenment. The timing of this is especially brutal because of the current heatwave. I am now having to pull more from The Grid because my system does not produce as much — which is just backwards.
Lemme know if there is a better place to post.
Some basic facts:
-Located in Bay Area, Nor Cal
-System installed ~3 month ago
-3 PW+
-25 Panels
The issue I am having is that the system has slowly been producing less and less power each day for the last month. About 1 month ago it pulled down 54K in one day. Yesterday (record setting temps) it only pulled down 30K. That being said it feels like something is wrong and I am looking for some basic feedback and troubleshooting help before I engage Tesla (ugh).
I am new to all of this and have a lot to learn but so far here some reasons why the system might not be producing as much as it used to. I am wondering if anyone has any insight as to what might be going on and would love any advice on how to troubleshoot?
1. Panels are dirty - I have a large landscaping project going on which has involved a lot of excavation and moving around of dirt and gravel etc. Some of this activity has been directly next to the house where the panels are. When I look at the panels they even look dirty. According to research dirty panels can reduce generation by ~3%. Seems like this might be contributing to the problem but certainly does not explain a loss of ~40% . Maybe some of mine are just super dirty?
QUESTION: Can major landscaping around the panels contribute to such a decrease?
2. I have been throttled and am no longer allowed to generate as much power as when it was first installed. To be clear the system has been turned on since Day 1 and I have been feeding back into the grid since day 1. It seems like it was not supposed to be turned on and feeding back into the grid before PTO but thats they way Tesla left it. I charged the car as much as possible to avoid giving power to PG&E for free. The PTO process took 3 months to sort out with much back and forth with both PG&E and Tesla. For some reason I had to send multiple recent PG&E bills to Tesla - probably their own disorganization.
QUESTION: Does Tesla / PG&E limit solar production before the PTO process so as to limit me in what I can generate before PTO? I have read about other people being throttled before the PTO process. I have also read that “the system will not generate as much as it can before PTO is received”. This makes me believe I was being throttled while waiting for the PTO which I just got 1 week ago.
3. The extreme heat spell we are going through is currently effecting how much I can produce. Earlier in the summer is was not as hot. Not its extremely hot which I understand effects the production from the system. I read yesterday that in extreme heat the system can product up to ~%25 less. Seems like this could be a real possibility BUT this morning it was not as hot as yesterday and I was producing a similar amount in the morning.
QUESTION: Are other people in CA seeing a large decrease in solar production during this extreme heat wave?
4. Something is wrong with my system. This seems less likely because the system is brand spanking new AND I can see a gradual decrease over the past month. If something broke in the system I would expect to see that clear drop off at that specific point in time.
QUESTION: Based on the symptoms outlined here does this sound like a system problem? IE something is not working as expected?
Thanks for any and all enlightenment. The timing of this is especially brutal because of the current heatwave. I am now having to pull more from The Grid because my system does not produce as much — which is just backwards.