Soldato
I only did 2, was very hazy/misty most of the day.
Solar panels and battery - any real world reccomendations?
- Thread starter GinG
- Start date
I only did 2, was very hazy/misty most of the day.
Soldato
1.7 
Associate
Yes of course!
Associate
- Joined
- 1 Feb 2009
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4.9kw today for me. As I have foxes I need to play with HA to export the data to SolarPV. My east facing panels are just missing out on the sun before it goes to the west side panels. Can’t wait to see how we do in spring
Soldato
Yes of course!
Who would have doubted it, no-one I bet!
Have you got a time to pay back count down display on your HA setup?
Soldato
I think people are forgetting if your switching to a ASHP and replacing gas your more than likely into the 50+ units a day, possible even close to 100
When the ASHP is running its probably going to be using 4-8KWH to heat the house and water in those windows
I would expect them to use probably 80% of their units in those windows, plus of course the 13-16 window is damn convenient for many to do the dishwasher and washing machine etc
Hell even cook the main meal
When you look at it like that you should see that the average will be lower than the standard rate.
Also if you have home batteries you have two charging windows, and one is exactly prior to your expensive period, 16-19 so you should in reality do most of that on 21p units as well
I would be very surprised if anyone installing ASHP wasn't already a solar convert
When the ASHP is running its probably going to be using 4-8KWH to heat the house and water in those windows
I would expect them to use probably 80% of their units in those windows, plus of course the 13-16 window is damn convenient for many to do the dishwasher and washing machine etc
Hell even cook the main meal
When you look at it like that you should see that the average will be lower than the standard rate.
Also if you have home batteries you have two charging windows, and one is exactly prior to your expensive period, 16-19 so you should in reality do most of that on 21p units as well
I would be very surprised if anyone installing ASHP wasn't already a solar convert
Soldato
Ah FFS. Tuya have put their energy monitoring data behind a paywall. 
Soldato
Seems a good reason not to buy their products then.Ah FFS. Tuya have put their energy monitoring data behind a paywall.
Associate
GitHub - rospogrigio/localtuya: local handling for Tuya devices
local handling for Tuya devices. Contribute to rospogrigio/localtuya development by creating an account on GitHub.
github.com
Or install this, convert your tuya devices to local and connect to your home assistant instance and be free of it forever ...
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Associate
I need to do a bit of work as I've got various monitors - I've got my initial outlay and then the saving per day, week , month on electricity. I haven't done the saving on water heating yet - need to think about that.Who would have doubted it, no-one I bet!
Have you got a time to pay back count down display on your HA setup?
Then for full ROI I've taken my three year average mileage in the old diesel car and I'm separately tracking the energy charging of the Tesla (ie how much solar and how much cheap rate) to offset against the equivalent diesel cost.
I have to say, I'm only three months in (and probably the worst months to start, but I'm smashing my estimates).
If it carried on like this, my ROI would be about four years (obviously helped also by the stratospheric energy rises)
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Soldato
Christ, that looks like the day job.
GitHub - rospogrigio/localtuya: local handling for Tuya devices
local handling for Tuya devices. Contribute to rospogrigio/localtuya development by creating an account on GitHub.
Or install this, convert your tuya devices to local and connect to your home assistant instance and be free of it forever ...
Man of Honour
Perfect procrastination project
Soldato
Does solar panels work well when it's so cold as it is now but blue sky sun light?
Soldato
Yes. But as the sun is low in the sky they won't be generating as much as if the sun is overhead. You're also much more likely to get shading while the sun is this low.
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Soldato
Temperature is not much of a factor. Its 9am ours is producing 704w thats more than we are currently using in Electricity with 2 people working from home. So yep its working well and its not even doing much.
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My use of the Saving Session system seems to be working well, had a session on Monday that earnt me over a tenner, plus about 7 quid in grid export as the export prices were so high! Did have to charge the battery from the grid beforehand though as solar was poor, but still, guess that would have cost about £2.50 at most. Almost feel guilty, but figure I wouldn't be doing it if they'd actually get round to getting my Economy 7 tariff going!
Soldato
If anything they work better when they are cold.
But usually cold weather= lower sun/sunlight.
If you could have end of June sunlight, and middle of December temperature it would be perfect
Soldato
Associate
The angle of the sun is the biggest single factor.
We absolutely know that it is a case of the colder the better.
Look at this when it was getting hotter every day in August. Our highest output this year was on June 14th when we generated 87.7kw. The really hot weather lost us about 10% of the potential output of a sunny but much cooler day than August 12/13th
6 | Aug-22 | 15h 07m 43s | 55.1° | 24.7 | 23.6 | 32.2 | 47155.5 | 55.8 | 80.5 | ||
7 | Aug-22 | 15h 04m 22s | 54.8° | 25.5 | 23.5 | 32.3 | 47181.0 | 55.8 | 81.3 | ||
8 | Aug-22 | 15h 01m 00s | 54.5° | 25.0 | 23.1 | 31.7 | 47206.0 | 54.8 | 79.8 | getting hotter every day | |
9 | Aug-22 | 14h 57m 35s | 54.2° | 23.3 | 23.2 | 30.1 | 47229.3 | 53.3 | 76.6 | ||
10 | Aug-22 | 14h 54m 09s | 53.9° | 23.7 | 22.9 | 31.2 | 47253.0 | 54.1 | 77.8 | ||
11 | Aug-22 | 14h 50m 41s | 53.6° | 24.0 | 22.9 | 30.9 | 47277.0 | 53.8 | 77.8 | and hotter | |
12 | Aug-22 | 14h 47m 11s | 53.3° | 23.4 | 22.5 | 30.2 | 47300.4 | 52.7 | 76.1 | ||
13 | Aug-22 | 14h 43m 40s | 53.0° | 23.4 | 22.4 | 30.3 | 47323.8 | 52.7 | 76.1 |
35kw on the 8th was only possible because it was so cold
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