Octopus Free Power Hours

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nowty
Posts: 5714
Joined: Mon May 31, 2021 2:36 pm
Location: South Coast

Re: Octopus Free Power Hours

#181

Post by nowty »

Stinsy wrote: Sun Oct 20, 2024 1:46 pm
nowty wrote: Sun Oct 20, 2024 1:14 pm IOG cheapslot engaged for extra payback and 22kW+ coming in. :twisted:
It has been shown by others in previous sessions that you get charged the cheap rate but you get the peak rate credit. ;)
That is interesting. I always switch off smart charging during these "power hours" because I don't want the car charging at 7.4kW while Octopus are monitoring it.
I'm charging the IOG EV controlled one at 10A and SWMBO EV at 32A.
16.9kW PV > 109MWh generated
Ripple 6.6kW Wind + 4.5kW PV > 25MWh generated
5 Other RE Coop's
105kWh EV storage
60kWh Home battery storage
40kWh Thermal storage
GSHP + A2A HP's
Rain water use > 510 m3
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Stinsy
Posts: 2715
Joined: Wed Jun 02, 2021 1:09 pm

Re: Octopus Free Power Hours

#182

Post by Stinsy »

nowty wrote: Sun Oct 20, 2024 1:54 pm
Stinsy wrote: Sun Oct 20, 2024 1:46 pm
nowty wrote: Sun Oct 20, 2024 1:14 pm IOG cheapslot engaged for extra payback and 22kW+ coming in. :twisted:
It has been shown by others in previous sessions that you get charged the cheap rate but you get the peak rate credit. ;)
That is interesting. I always switch off smart charging during these "power hours" because I don't want the car charging at 7.4kW while Octopus are monitoring it.
I'm charging the IOG EV controlled one at 10A and SWMBO EV at 32A.
That makes sense...

I need to upgrade the PHEV...
12x 340W JA Solar panels (4.08kWp)
3x 380W JA Solar panels (1.14kWp)
5x 2.4kWh Pylontech batteries (12kWh)
LuxPower inverter/charger

(Artist formally known as ******, well it should be obvious enough to those for whom such things are important.)
Moxi
Posts: 2190
Joined: Sun Oct 31, 2021 3:46 pm

Re: Octopus Free Power Hours

#183

Post by Moxi »

We got the invite twenty minutes in to the hour so I gave it a go and charged MiLs house battery up to 95% warmed up her living room via the fan heater and we had a cuppa. Managed to use 2.5kWh so not in the same league as many here but the benefit to MiL was significant.

Moxi
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Joeboy
Posts: 7980
Joined: Mon May 31, 2021 4:22 pm
Location: Inverurie

Re: Octopus Free Power Hours

#184

Post by Joeboy »

Moxi wrote: Sun Oct 20, 2024 2:10 pm We got the invite twenty minutes in to the hour so I gave it a go and charged MiLs house battery up to 95% warmed up her living room via the fan heater and we had a cuppa. Managed to use 2.5kWh so not in the same league as many here but the benefit to MiL was significant.

Moxi
Nice one Moxi, glad you got in, many more to ye!
19.7kW PV SE, VI, HM, EN & DW
Ripple 7kW WT & Gen to date 19MWh
42kWh LFPO4 storage
95kWh Heater storage
12kWh 210ltr HWT.
73kWh HI5
Deep insulation, air leak ct'd home
Zoned GCH & Hive 2
WBSx2
Low energy bulbs
Veg patches & fruit trees
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Joeboy
Posts: 7980
Joined: Mon May 31, 2021 4:22 pm
Location: Inverurie

Re: Octopus Free Power Hours

#185

Post by Joeboy »

We managed to help with 19.3kWh used here plus a couple at No1's place.. Did some speed cooking too for No1 so he's sorted while we are away.

All in all a frantic yet satisfying hour. :D

Mince n tatties
Boiled cabbage
Courgettes in garlic & tomato sauce
Black pudding, tattie scones and sausage
5 servings of rigatoni and the sauce to go with it
He had a free power hour into his EV
3 storage heaters on
HWT
The devil's tumble dryer
Kettle, kettle, kettle!
Charge the home stack
Air fryer,
Microwave


Image

Image

Image
19.7kW PV SE, VI, HM, EN & DW
Ripple 7kW WT & Gen to date 19MWh
42kWh LFPO4 storage
95kWh Heater storage
12kWh 210ltr HWT.
73kWh HI5
Deep insulation, air leak ct'd home
Zoned GCH & Hive 2
WBSx2
Low energy bulbs
Veg patches & fruit trees
Yuff
Posts: 454
Joined: Sat Dec 31, 2022 1:18 pm
Location: East Midlands

Re: Octopus Free Power Hours

#186

Post by Yuff »

Was all going well until the mains fuse board tripped, again.
Octopus showing it spiked to 1340w in the minute it tripped :head-bang:
Image
Mitsubishi Ecodan
ASHP 8.5kW x 2
12 x 460w Solar panels
9.5kWh GivEnergy
Batteries x 2
EVs x 4 210 kWh Batteries
Ripple 5.8 kW PV 0.547 kW Whitelaw Brae
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Stinsy
Posts: 2715
Joined: Wed Jun 02, 2021 1:09 pm

Re: Octopus Free Power Hours

#187

Post by Stinsy »

nowty wrote: Sun Oct 20, 2024 1:54 pm
Stinsy wrote: Sun Oct 20, 2024 1:46 pm
nowty wrote: Sun Oct 20, 2024 1:14 pm IOG cheapslot engaged for extra payback and 22kW+ coming in. :twisted:
It has been shown by others in previous sessions that you get charged the cheap rate but you get the peak rate credit. ;)
That is interesting. I always switch off smart charging during these "power hours" because I don't want the car charging at 7.4kW while Octopus are monitoring it.
I'm charging the IOG EV controlled one at 10A and SWMBO EV at 32A.
With 2 mins to go before the power-hour finished, I stopped the car charging, switched to 6A, turned smart charging on, and asked for a charge schedule. So at least the 2nd half will be at double-bubble...


Image
12x 340W JA Solar panels (4.08kWp)
3x 380W JA Solar panels (1.14kWp)
5x 2.4kWh Pylontech batteries (12kWh)
LuxPower inverter/charger

(Artist formally known as ******, well it should be obvious enough to those for whom such things are important.)
richbee
Posts: 594
Joined: Tue Apr 19, 2022 3:39 pm
Location: Northumberland

Re: Octopus Free Power Hours

#188

Post by richbee »

richbee wrote: Sun Oct 20, 2024 12:55 pm Aiming for an all time record, with Sunday dinner on, washing, tumble dryer, battery charging + electric shower (teenager😜) - hoping it doesn't trip the house fuse😝
Image

Not a bad effort😁 - won't be for the full hour, but a lot more than usual.
I have a 60A main fuse, which I reckoned should be around 14kW at 240V - not sure how long it has to be over the limit before risk of tripping?
Solar PV since July '22:
5.6kWp east/west facing
3.6kW Sunsynk hybrid inverter
2x 5.12kWh Sunsynk batteries
1.6kWp Hoymiles East/West facing PV on the man cave
Ripple DW 2kW
Ripple WB 200W
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Stinsy
Posts: 2715
Joined: Wed Jun 02, 2021 1:09 pm

Re: Octopus Free Power Hours

#189

Post by Stinsy »

richbee wrote: Sun Oct 20, 2024 4:49 pm
richbee wrote: Sun Oct 20, 2024 12:55 pm Aiming for an all time record, with Sunday dinner on, washing, tumble dryer, battery charging + electric shower (teenager😜) - hoping it doesn't trip the house fuse😝
Image

Not a bad effort😁 - won't be for the full hour, but a lot more than usual.
I have a 60A main fuse, which I reckoned should be around 14kW at 240V - not sure how long it has to be over the limit before risk of tripping?
The spec is usually something like:
  • At 100% of fuse rating it will take more than 10,000 seconds to blow
  • At 200% of fuse rating it will take c. 400 seconds to blow
  • At 500% of fuse rating it will take c. 5 seconds to blow
  • At 1000% of fuse rating it will take c. 0.2 seconds to blow
The actual spec depends on the exact type of fuse and there is huge variation between samples. However these fuses aren't there to stop you from drawing more than the fuse rating, they're there to protect in the event of a fault.
12x 340W JA Solar panels (4.08kWp)
3x 380W JA Solar panels (1.14kWp)
5x 2.4kWh Pylontech batteries (12kWh)
LuxPower inverter/charger

(Artist formally known as ******, well it should be obvious enough to those for whom such things are important.)
richbee
Posts: 594
Joined: Tue Apr 19, 2022 3:39 pm
Location: Northumberland

Re: Octopus Free Power Hours

#190

Post by richbee »

Stinsy wrote: Sun Oct 20, 2024 5:05 pm
richbee wrote: Sun Oct 20, 2024 4:49 pm
richbee wrote: Sun Oct 20, 2024 12:55 pm Aiming for an all time record, with Sunday dinner on, washing, tumble dryer, battery charging + electric shower (teenager😜) - hoping it doesn't trip the house fuse😝
Image

Not a bad effort😁 - won't be for the full hour, but a lot more than usual.
I have a 60A main fuse, which I reckoned should be around 14kW at 240V - not sure how long it has to be over the limit before risk of tripping?
The spec is usually something like:
  • At 100% of fuse rating it will take more than 10,000 seconds to blow
  • At 200% of fuse rating it will take c. 400 seconds to blow
  • At 500% of fuse rating it will take c. 5 seconds to blow
  • At 1000% of fuse rating it will take c. 0.2 seconds to blow
The actual spec depends on the exact type of fuse and there is huge variation between samples. However these fuses aren't there to stop you from drawing more than the fuse rating, they're there to protect in the event of a fault.
Brilliant, thanks for that guide - very useful - so I shouldn't have too many problems with short term overloads of this kind
Solar PV since July '22:
5.6kWp east/west facing
3.6kW Sunsynk hybrid inverter
2x 5.12kWh Sunsynk batteries
1.6kWp Hoymiles East/West facing PV on the man cave
Ripple DW 2kW
Ripple WB 200W
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