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Last seen: Apr 26, 2026
I'm torn on this. The issue I see is that when one performs a retrofit (heat pump installation onto existing heating system), the installer often has ...
Out of interest, I've just had a look back at my radiators spreadsheet, and at a flow temp of 35C (which is as high as we are ever going to run), my l...
My heat pump is maybe 3 times oversized on paper being a 12kW unit and my heat loss to date has been around 4kW, although we do not heat the house to ...
Following on from @jamespa excellent answer(s), it really all starts with the heat loss figure. If you know the heat loss for the property (and even b...
@papahuhu Yes, a net metering tariff where import and export are the same price seems a bit of a paradox where import prices are rising at the same ti...
@Toodles Agreed. Perhaps I'm too much of a perfectionist, always trying to squeeze that last couple percent performance out of the system. However, th...
Yes, I'm guessing it was kind of easy (less costly) for them to delay until 1st March as I imagine most people are not exporting any significant amoun...
Me too. Another reason to consider IOF in summer, now effectively paying double SEG rates for export? I've not seen anything (yet) about IOF rates cha...
@upnorthandpersonal thank you for sharing details of your home - I thoroughly enjoyed reading your blog posts about your off grid home. Very impressiv...
Indeed, but HMRC subsequently rejected their claim and ruled that all income from Ripple was taxable as they failed the first test listed above: 1. ...
Yes, of course the total income from export could be greater than £1,000, so we need to understand if import costs for arbitrage are allowable expense...
Agreed, and the current direction of travel appears to be to move some of the levies on electricity into general taxation, which whilst it will help r...
Latest Posts
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RE: Renewables & Heat Pumps in the News
An article on funding for heat pumps in case anyone is ...
By Jeff , 2 hours ago
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RE: Indevolt Batteries UK Support & Info Thread
Thanks @editor , @indevolt-uk Subject to any comments ...
By JamesPa , 9 hours ago
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RE: Share Your Experiences with Heat Pump Manufacturer Support
@seoras Sorry to hear that. I found Vaillant very help...
By JamesPa , 10 hours ago
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The Watchdog That Watched and Waited
On 9 January 2026, Consumer Energy Solutions collapsed ...
By Mars , 13 hours ago
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RE: GSHP Kaput After 16 Years: New Compressor or Switch to ASHP? Advice Welcome
Cool Energy in Grimsby sell ground source heat pumps an...
By DerekDeLeon , 14 hours ago
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RE: Valliant Heat Pump Settings
Thats arguably a sign of a good installer - they unders...
By JamesPa , 15 hours ago
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RE: Electricity price predictions
Well, we have so many cases where rain water mixes with...
By Batpred , 16 hours ago
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RE: Two heating zones to one zone
@profzarkov They arent obviously wrong, but the only...
By JamesPa , 18 hours ago
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RE: Towns water feed to air source heat pump system
The DHW circuit cant be separated (well it could, you c...
By JamesPa , 18 hours ago
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Solis AC-coupled 3kW storage inverter
Solis AC-coupled 3kW storage inverterPylontech batterie...
By MartinRobinson , 24 hours ago
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RE: My NIBE ASHP Nightmare: No Commissioning, High Bills and a Hostile Installer
As @transparent has observed above, this is not bad, an...
By cathodeRay , 1 day ago
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As I was reading this article Mars, I was thinking that...
By Toodles , 2 days ago
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RE: Tell us about your Solar (PV) setup
Installed in May 2011: 16*Sharp 245 W monocrystalline p...
By txmartyn , 2 days ago
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RE: Say hello and introduce yourself
That doesn't sound 'right' to me. The national Smart ...
By Transparent , 3 days ago
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RE: Growatt battery disconnected
I doubt this will happen, but I will try and suggest it...
By Eliuccio , 3 days ago
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Understood. That's why I decided from the outset on a ...
By JamesPa , 4 days ago
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RE: My experience with 3 heat pump surveys: Heat Geek, British Gas & Octopus
On the litigation, I would not go there and definitely ...
By Batpred , 4 days ago
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RE: Recommended home battery inverters + regulatory matters - help requested
I suppose if your pv inverter packs up, you have a plan...
By Batpred , 4 days ago
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RE: New Vaillant aroTherm Plus in black - When will it come to the UK?
Firstly check you are using sound power not sound press...
By JamesPa , 4 days ago
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That’s the solar up and running, I don’t think it’s the...
By David999 , 4 days ago
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RE: Seeking ideas / information / commiseration - Pure Drive
I agree with @colinc that you can reuse some of it. A s...
By Batpred , 4 days ago
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RE: Solar Power Output – Let’s Compare Generation Figures
@toodles Im trying me best to ignore orangeman, I figur...
By Papahuhu , 5 days ago
