Forums

Forums
Renewable Heating
Air Source Heat Pum...
MHHS and Heat Pump ...
 
Notifications
Clear all

MHHS and Heat Pump compatibility

 
Air Source Heat Pumps (ASHPs)
Last Post by Scalextrix 3 weeks ago
5 Posts
2 Users
0 Reactions
107 Views
RSS
 Scalextrix
(@scalextrix)
Trusted Member Member
Joined: 8 months ago
Posts: 23
Topic starter 23/04/2025 1:09 pm  

I was reading today about the MHHS (Metering Half Hourly Settlement) and I saw a few vague comments about many renewables technologies needing to be compatible.

 

Clearly any Smart Meter is compatible, but are there any expectations for Heat Pumps to be directly aware of half hourly tariffs and is there any public information on that topic?

 

As far as I can see there will be a big change in energy suppliers offering "Agile" style tariffs after the MHHS implementation (October 2026), or at least we should expect strong signals from OFGEM to push energy supply in that direction.


   
Quote
Topic Tags
Standard
Toodles
 Toodles
(@toodles)
Famed Member Contributor
Joined: 3 years ago
Posts: 1930
23/04/2025 2:22 pm  

Not sure whether this is quite what you have in mind but; the Homely smart controller itself can be set to follow various TOU tariffs whereby the system will endeavour to reduce consumption during more expensive periods by pre-emptive action to use more energy before the ‘spensive’ periods and then coast through at lower consumption.

I know one can set the controller to follow OE’s Cosy tariff f’rinstance but, I am unsure whether there is an ability to work on all 48 HH’s each day. I had my Homely set to follow the Cosy schedule but as I have a Powerwall battery system, I didn’t feel it was so beneficial as it might be without a battery to suck up the grid during the cheapest 8 hours per day. Regards, Toodles.

Toodles, he heats his home with cold draughts and cooks his food with magnets.


   
ReplyQuote
 Scalextrix
(@scalextrix)
Trusted Member Member
Joined: 8 months ago
Posts: 23
Topic starter 23/04/2025 4:18 pm  

@toodles thanks, that's useful information about Homely.

 

What Im really asking is if there will be a requirement for new heat pumps to be compatible with the MHHS standard.


   
ReplyQuote



Toodles
 Toodles
(@toodles)
Famed Member Contributor
Joined: 3 years ago
Posts: 1930
23/04/2025 4:44 pm  

@scalextrix I thought that that was the more likely enquiry.😉

It is the old problem of the time lag before  acceptance and adoption of any new standard isn’t it? There is also the resistance due to the ‘We have always done it that way - so why change it now?’ argument, however…

I suppose what Octopus Energy are doing with their Red adopted and possibly refined technology to include 2 way communications between their Cosy heat pumps and Kraken may be heading along the right lines. However, OE may be the only adopters for a little while I feel (see my second paragraph) but one can but hope that other designers and manufacturers will ‘see the light’ soon. Regards, Toodles.

This post was modified 3 weeks ago by Toodles

Toodles, he heats his home with cold draughts and cooks his food with magnets.


   
ReplyQuote
 Scalextrix
(@scalextrix)
Trusted Member Member
Joined: 8 months ago
Posts: 23
Topic starter 23/04/2025 7:21 pm  

@toodles to be clear I don't know if there will be a requirement, I was trying to find that out.


   
ReplyQuote
Forum Jump:
  Previous Topic
Next Topic  
Topic Tags:  Standard (1) ,
Share:

Join Us!

Trusted Installers

Struggling to find a reliable heat pump installer? A poor installation can lead to inefficiencies and high running costs. We now connect homeowners with top-rated installers who deliver quality work and excellent service.

✅ Verified, trusted & experienced installers
✅ Nationwide coverage expanding
✅ Special offers available

👉 Find your installer now!

Latest Posts

x Powerful Protection for WordPress, from Shield Security
This Site Is Protected By
Shield Security →