Solar panels and battery - any real world reccomendations?

We’re new to ASHPs. House has been sat at 20.5*C 24hrs a day in -3*C
More battery storage is on the cards for certain as we’re on Octopus Agile.

Our average unit price is ~20p/kWh but if we could avoid more import 4-7pm that’d help!
 
NoNameNoNumber said:
We’re new to ASHPs. House has been sat at 20.5*C 24hrs a day in -3*C
More battery storage is on the cards for certain as we’re on Octopus Agile.

Our average unit price is ~20p/kWh but if we could avoid more import 4-7pm that’d help!
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I run my heat pump harder overnight to overshoot my target temperature (20C) when its cheap and it shuts down at 05:30 for a few hours, even in this weather. I drop the target temp 1C at 21:00 so the unit shuts down and the house cools a bit for bed time and it restarts sometime after I have gone to sleep when it ever drops below 18.5C (19C target) or 02:00 where its targeting 22C.

The solar and my 13.5kwh battery have got me through to this point which is good going IMO. I'm on Octopus Intelligent which will be back to 7p in about 90 mins or so.

I'm at 26.8 import plus 9.7 solar at the moment although the battery has just gone to idle and shut down so we are now back on grid. In total my heat pump has consumed 26.4 kwh, it was just into double digits when I woke up at 6AM this morning. I'll report back what my average unit rate was but it will be around 8-9p for today.
 
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I spoke to my boss earlier and he reckoned he has seen up to 50 quid a day. So I was here to query actual consumption. I didn't realise it was quite this bad!
 
dlockers said:
I spoke to my boss earlier and he reckoned he has seen up to 50 quid a day. So I was here to query actual consumption. I didn't realise it was quite this bad!
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It’s pointless looking at £ spent as it’s completely unique to an individual property. They may also have a **** install if he is hitting £50 in a day, that’s 200kwh at price cap prices. You need to look at heat produced for the cost.

according to octopus I spent £1.88 yesterday, I imported 25.2kwh so my average unit cost was 7.4p.

The heat pump consumed 14.35 kWh and would have produced over 50kwh of heat which cost me £1.05.

You aren’t matching that with gas, it would have been over £3.50 once factoring in boiler efficiency. If I was paying the price cap for the electric it would have also cost £3.50.

At price cap prices, running costs should be pretty much the same.
 
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Nathan said:
Wow those figures are no different to my gas heating a house with nearly 3000 SQF. However, my log burner takes the brunt.
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At process cap prices yes, that’s always been the case because the price of electricity is tied to the price of gas currently.

Heat pumps have never been about saving any money. If it was people would just install them and it wouldn’t need a £7500 government grant to make the retrofit make sense.

The only way to actually lower your bills is to exploit time of use tariffs alongside solar and battery storage. That’s something you can’t do with gas.

There are other benefits such as better comfort from having a heating system which is correctly installed and has good controls (unlike nearly all gas systems).

It’s also quieter, a lot quieter. I couldn’t tell you when my heat pump is running at full tilt, I could immediately tell tell you whenever my old gas boiler fired up.
 
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