Solar PV (1 Viewer)

[magicbastarder]

my concern is that knowing my FIL, he'll now feel entitled to burn up that much CO2, which he never saved in the first place.

 

[ann post]

my concern is that knowing my FIL, he'll now feel entitled to burn up that much CO2, which he never saved in the first place.

Aye i've a few people like that in my life too

 

[ernesto]

2 x Cat6, alarm cable and 2 x 6mm (squared) mains cables all ran this week for solar/inverter and future new heat pump/boiler (whatever)
Just have to put back down floor temporarily (replacing them in October) tomorrow and the lads will install our system in a fortnight

 

[error type 11]

How are the solar panel users getting on with power output during the shorter days over winter. Is it ok/abysmal/surprising etc??

 

[Anthony]

Pretty crappy but not nothing. That's to be expected. The savings are really made in summer.

 

[egg_]

You get little enough out of it this time of year. For example on Dec 21 we got 2.2kWh, where on Jun 22 we got 27.2kWh

 

[ernesto]

How are the solar panel users getting on with power output during the shorter days over winter. Is it ok/abysmal/surprising etc??

Got 2kw out of a sunny afternoon last week. Otherwise when it's full get between 1kw and 2kw on short dark winter days

 

[magicbastarder]

You get little enough out of it this time of year. For example on Dec 21 we got 2.2kWh, where on Jun 22 we got 27.2kWh

that's still enough to run a kettle for an hour, to be fair!

 

[ann post]

Do you all have dáta for the solstice day?

 

[Anthony]

just checking figures on the 21/01/2024 we only got 0.3kwh where the 26th was 4.9kwh, solstice 2/06/2023 we got 23.8Kwh. It was a cloudy enough day though wasn't it?

 

[pete]

Do you all have dáta for the solstice day?

21st December - 3.1kwh
22nd December - 1.4kwh

21st June - 24.3kwh

 

[pete]

the real saving this time of year comes from grid shifting with the battery

"Saving" is probably the wrong word considering the upfront costs involved. ROI?

 

[ernesto]

21st December - 3.1kwh
22nd December - 1.4kwh

21st June - 24.3kwh

We got 2.3kwh on 21/12

Nada on the 22nd

 

[pete]

We got 2.3kwh on 21/12

Nada on the 22nd

Ulster Tax?

 

[ernesto]

the real saving this time of year comes from grid shifting with the battery

"Saving" is probably the wrong word considering the upfront costs involved. ROI?

What Is grid shifting?

the recent storms tripped our inverter breaker and we didn't notice so it ran down the battery and now the solar people have to come out to restart the battery because it is stuck at 0% and not charging. They forgot to tell us (and loads of other customers of theirs) to watch out for it so they've a long list of callbacks to make these few
Weeks

 

[ernesto]

Ulster Tax?

Yeah another one

 

[pete]

What Is grid shifting?

filling the battery on the overnight cheap rate then using it during peak hours

 

[pete]

The idea is that you run as much as possible using the stored power in the battery (which costs 25% of the daily rate) + solar (free), while also topping the battery up during the day with any excess solar production.



Battery tops itself up between 2am-4am (the green line). Battery state of charge is the red(purple? pink?) line.

You can also see the total consumption in the amber line/area - so the car charging between 2am-4am, and the washing machine kicking off at about 2:15am. The other spikes are the battery topping itself up at about 7am (don't know why it's doing this) then me defrosting the car just before 8am, (because the car is plugged in it uses mains power for this, not its own battery. Need to stop it doing that somehow.)

Grid consumption is the blue line/area which pretty much flatlines at 8am until the battery drains.

right now:

 

[ann post]

Thanks - I've not checked but i think a lot of days in UTM's 1.4kwh would be ample. He boils the kettle a few times, charges his 5v stuff and other than that it's broadband/tv/lights. The kettle is the only thing that sees anything over about 60w. .

 

[magicbastarder]

water is heated with oil?