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Who's your electricity provider and what's your tariff?

 
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Electricity, Tariffs, Monitoring, Electrics & Providers
Last Post by Toodles 13 minutes ago
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 Derek M
(@derek-m)
Illustrious Member Member
Joined: 5 years ago
Posts: 4425
23/11/2021 8:59 pm  
Posted by: @justinsb

@kev-m TBH, I'm now thinking that I should go Economy 7, as my Solar Panels ought to take care of much of the daytime usage, hopefully.

Hi Justin,

I'm afraid that your solar PV system will not provide much of the power that will be required by your ASHP, so the higher tariff of the daytime electricity may make it more expensive in the long run. Your ASHP will probably be using more energy overnight, so the sums may add up.

I am about to post the modelling tool spreadsheet under Kev's trend, which you may find of use in making your decision.



   
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 batalto
(@batalto)
Noble Member Member
Joined: 5 years ago
Posts: 1092
23/11/2021 9:06 pm  

@derek-m I'm finding my batteries are very useful in bringing down my current tariff. However for those without batteries I think the payoff may be marginal. I imagine you'll end up being broadly flat in terms of average price


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)
Noble Member Member
Joined: 5 years ago
Posts: 1276
23/11/2021 9:30 pm  
Posted by: @justinsb

@kev-m TBH, I'm now thinking that I should go Economy 7, as my Solar Panels ought to take care of much of the daytime usage, hopefully.

The break even point is about 70/30 day/night without PV (which is also 7/24 give or take).  I'll have to look at my numbers.



   
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 Derek M
(@derek-m)
Illustrious Member Member
Joined: 5 years ago
Posts: 4425
23/11/2021 9:35 pm  
Posted by: @batalto

@derek-m I'm finding my batteries are very useful in bringing down my current tariff. However for those without batteries I think the payoff may be marginal. I imagine you'll end up being broadly flat in terms of average price

Hi Batalto,

You are probably correct. I have considered batteries and some additional solar panels, but since we are still using the gas boiler for the major heating load, I'm not certain of the benefit.

My other concern would be if tariffs like Octopus Go will still be available into the future, given what has been happening in the energy markets.



   
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 batalto
(@batalto)
Noble Member Member
Joined: 5 years ago
Posts: 1092
23/11/2021 9:36 pm  

@derek-m to be honest, they've delivered a lot of value just with the solar. Adding in Go just gives me even greater benefit


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
Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 5 years ago
Posts: 4763
Topic starter 27/11/2021 1:12 pm  

We’ve been without power since midnight courtesy of storm Arwen. Latest update is we’re back on tomorrow with power. Fires are on. 


New to heat pumps? Take the Heat Pump Fundamentals course and use INTRO50 at checkout for 50% off.
Rewritten and updated for 2027
📘 From Zero to Heat Pump Hero
🛠️ Bodge Buster
🎧 Prefer to listen? Heat Pumps Explained


   
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 batalto
(@batalto)
Noble Member Member
Joined: 5 years ago
Posts: 1092
27/11/2021 1:44 pm  

@editor that makes me nervous as we have no fires... Then again, we aren't exactly remote


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
Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 5 years ago
Posts: 4763
Topic starter 27/11/2021 1:58 pm  

On the plus side we’re not paying 24p/kWh of power today 😀 


New to heat pumps? Take the Heat Pump Fundamentals course and use INTRO50 at checkout for 50% off.
Rewritten and updated for 2027
📘 From Zero to Heat Pump Hero
🛠️ Bodge Buster
🎧 Prefer to listen? Heat Pumps Explained


   
ReplyQuote
Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 5 years ago
Posts: 4763
Topic starter 27/11/2021 5:28 pm  

Relief – power is back. Heating back on. 


New to heat pumps? Take the Heat Pump Fundamentals course and use INTRO50 at checkout for 50% off.
Rewritten and updated for 2027
📘 From Zero to Heat Pump Hero
🛠️ Bodge Buster
🎧 Prefer to listen? Heat Pumps Explained


   
ReplyQuote
 batalto
(@batalto)
Noble Member Member
Joined: 5 years ago
Posts: 1092
28/11/2021 12:08 am  

@editor if it makes you feel better, we've used about 80kw today with heating, hot water and general life - so you avoided all of that


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
 Justin
(@justinsb)
Estimable Member Member
Joined: 5 years ago
Posts: 100
28/11/2021 8:58 am  

Yup. We pulled 63Kwh in the past 24 hrs too, so it's not a cheap time for ASHP people...



   
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Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 5 years ago
Posts: 4763
Topic starter 28/11/2021 9:31 am  

@justinsb, it certainly isn’t going to be a cheap winter for heating using heat pumps. We had a few days in February where we exceeded 100kWh which cost us around £11 - this year it’ll be £24. Crazy times.


New to heat pumps? Take the Heat Pump Fundamentals course and use INTRO50 at checkout for 50% off.
Rewritten and updated for 2027
📘 From Zero to Heat Pump Hero
🛠️ Bodge Buster
🎧 Prefer to listen? Heat Pumps Explained


   
ReplyQuote
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