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Air Source Heat Pumps (ASHPs)
Last Post by batalto 2 years ago
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 batalto
(@batalto)
Famed Member Member
Joined: 4 years ago
Posts: 1091
Topic starter 01/03/2022 11:23 am  

Update for the month (Feb)

ASHP use: 909kW

Total use: 1305kW

Power purchased: 1060kW

Last Bill - Jan 20th to Feb 20th - £172 @ effective price of 10.68p/kw + standing charges

image

12kW Midea ASHP - 8.4kw solar - 29kWh batteries
262m2 house in Hampshire
Current weather compensation: 47@-2 and 31@17
My current performance can be found - HERE
Heat pump calculator spreadsheet - HERE


   
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 batalto
(@batalto)
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Topic starter 22/03/2022 12:30 pm  

latest update on electricity bills - my latest bill (Feb 20 - Mar 20) is roughly half the previous bill

image

This is for ALL power including domestic and ASHP. As you can see over half was "off peak" rates (so 00:30 - 04:30) and went to night time ASHP and battery charging

image

Example day from the 19th of March - a nice sunny day. You can see basically zero power use outside of the "off peak" hours. I expect moving forward my bills will begin to drop towards zero, with only standing charges remaining. My battery is set to stop filling in April, however I might extend this to maybe 50% fill for April, as I wind down my grid use entirely.

12kW Midea ASHP - 8.4kw solar - 29kWh batteries
262m2 house in Hampshire
Current weather compensation: 47@-2 and 31@17
My current performance can be found - HERE
Heat pump calculator spreadsheet - HERE


   
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2
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 Kev M
(@kev-m)
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Posts: 1276
22/03/2022 4:54 pm  

@batalto 

If you were like me and had no pv/batteries, how many kWh do you think you would have used and how much would it have cost you at cap rates?


   
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 batalto
(@batalto)
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Posts: 1091
Topic starter 22/03/2022 5:47 pm  

@kev-m whatever you think you need - double it.

As I said on a previous post I think you can build it fairly cheaply, it depends how much you want? Do you know your use?

12kW Midea ASHP - 8.4kw solar - 29kWh batteries
262m2 house in Hampshire
Current weather compensation: 47@-2 and 31@17
My current performance can be found - HERE
Heat pump calculator spreadsheet - HERE


   
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 Kev M
(@kev-m)
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Joined: 4 years ago
Posts: 1276
22/03/2022 5:52 pm  

I'm thinking about it seriously now.  I'm not sure what the numbers would look like without the tariff you have; I don't think it's available.


   
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 Derek M
(@derek-m)
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Joined: 4 years ago
Posts: 4427
22/03/2022 6:17 pm  
Posted by: @kev-m

I'm thinking about it seriously now.  I'm not sure what the numbers would look like without the tariff you have; I don't think it's available.

Hi Kev,

I think that you are correct, that the tariff that Batalto is currently enjoying will never be available again, since the Go Tariff will increase in April to approximately 7.5p/kWh during the 4 hour cheap period, and I can't remember if the expensive rate was in the 20 or 30 pence range.

I was moved to Octopus last September onto their variable tariff, and I have just looked (as a customer) to see what the Go Tariff is now, and if it was possible to change tariff. I was only offered one ridiculously expensive tariff, which certainly wasn't Go.


   
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 batalto
(@batalto)
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Joined: 4 years ago
Posts: 1091
Topic starter 22/03/2022 6:34 pm  

@kev-m ours was worth it, even without Go. Go was just another benefit for us

12kW Midea ASHP - 8.4kw solar - 29kWh batteries
262m2 house in Hampshire
Current weather compensation: 47@-2 and 31@17
My current performance can be found - HERE
Heat pump calculator spreadsheet - HERE


   
ReplyQuote
 batalto
(@batalto)
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Joined: 4 years ago
Posts: 1091
Topic starter 22/03/2022 8:07 pm  

@kev-m @derek-m go is at this link. Have a go and see how you get on?

OCTOPUS.ENERGY "https://octopus.energy/go/"
Octopus Go | Octopus Energy
The UK's most awarded energy supplier. We're doing energy better - for you and the environment.

12kW Midea ASHP - 8.4kw solar - 29kWh batteries
262m2 house in Hampshire
Current weather compensation: 47@-2 and 31@17
My current performance can be found - HERE
Heat pump calculator spreadsheet - HERE


   
👍
2
ReplyQuote
 Kev M
(@kev-m)
Famed Member Member
Joined: 4 years ago
Posts: 1276
22/03/2022 8:35 pm  
Screenshot 2022 03 22 19.32.38

But I don;t have a smart meter ...


   
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 Derek M
(@derek-m)
Illustrious Member Member
Joined: 4 years ago
Posts: 4427
22/03/2022 8:37 pm  
Posted by: @batalto

@kev-m @derek-m go is at this link. Have a go and see how you get on?

OCTOPUS.ENERGY "https://octopus.energy/go/"
Octopus Go | Octopus Energy
The UK's most awarded energy supplier. We're doing energy better - for you and the environment.

Hi Batalto,

Whilst the site provides the tariff rates 7.5p and 29.82p, it would appear that it will not allow one to switch to that tariff.


   
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 batalto
(@batalto)
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Joined: 4 years ago
Posts: 1091
Topic starter 22/03/2022 8:44 pm  

@kev-m I didn't have one. I just signed up and had to wait for it to be installed. Took ages though

12kW Midea ASHP - 8.4kw solar - 29kWh batteries
262m2 house in Hampshire
Current weather compensation: 47@-2 and 31@17
My current performance can be found - HERE
Heat pump calculator spreadsheet - HERE


   
ReplyQuote
 batalto
(@batalto)
Famed Member Member
Joined: 4 years ago
Posts: 1091
Topic starter 22/04/2022 9:44 am  

Monthly bill update from me - £61 (698kw) for the last month, all heating and power purchased for everyday use. Actual use as 1185kw (roughly)

image

12kW Midea ASHP - 8.4kw solar - 29kWh batteries
262m2 house in Hampshire
Current weather compensation: 47@-2 and 31@17
My current performance can be found - HERE
Heat pump calculator spreadsheet - HERE


   
ReplyQuote



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