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Last seen: Oct 19, 2026
Yes, you're right about G100.The export device will be certified to both G98 and G100. If the CT is absent then no export is possible. And if it's...
1: The EREC G standards apply to devices which can export to the grid.If it doesn't have export capability then it isn't covered by a G-standard, and ...
Like @agentgeorge I too have a warm-roof construction. It's retrofitted onto a 1930's farmhouse for which I was extending the roof in any case.I hav...
The issue of knowing the SoC is often misunderstood. It's clearly the case that an inverter can't assess the SoC of a storage battery without being ...
The answer will depend on the circumstances and by how much the steady-state demand exceeds 60A DNOs are unlikely to be heavy-handed in their approa...
Thermal gain from Windows is a common issue. But Home Assistant can also run on a Raspberry Pi, which takes less power of course. 😉
Yes. The point at which the DNO would normally require the home-owner to accept a 3ph supply is when the dwelling is operating above 60A in a steady-s...
That's poor science. Transformers (and underground cables) are often under-specified wrt to present-day demand loadings. They can continue to oper...
You're right @bash - every G99 application gets assessed on the substation data available to the DNO. There will be differing results, even for hous...
Hmm... whereas I understand the physics behind grid topology and operation, and I know it's being threatened by political policies 😯 We c...
Erm... how can @jancold post new links? It's you @batpred , who is doing the research into cheaper storage batteries from online sellers. Isn't it...
Aagh! Guidance from the Electrical Networks Association (ENA) is that domestic export should be limited to 16A per phase by default. So it's surpr...
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Latest Posts
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RE: Anyone concerned about GivEnergy?
The GivE forum seemed to have survived the collapse of ...
By downfield , 25 minutes ago
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RE: How quickly would you want/expect heat recovery to take from setback?
@singlespeed I had better explain how my radiators are ...
By Toodles , 59 minutes ago
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RE: Cooling/heating with one unit
@mrkfm The Solo has a small capacity and only suitable ...
By dgclimatecontrol , 1 hour ago
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RE: 15kw pump for 225m2 1990's house - over kill?
Firstly you have come to the right place and its good t...
By JamesPa , 2 hours ago
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RE: Renewables & Heat Pumps in the News
The irony is there's already an established internation...
By Temperature_Gradient , 3 hours ago
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First you need to know how much thermal energy you'll n...
By bobflux , 14 hours ago
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RE: Renewable Heating Hub Homeowners' Q&A Podcast
Come for the low-carbon homes. Stay for George Clarke’s...
By Mars , 2 days ago
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!
@razz, as we head into the heating season, I just wante...
By Mars , 2 days ago
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RE: How should the Boiler Upgrade Scheme be reformed?
Not quite, regular A2W heat-pumps need a load of extra ...
By Temperature_Gradient , 4 days ago
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RE: Heat Geek installations: share your experiences
one thing i learnt from reading people’s comments and e...
By Batpred , 4 days ago
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RE: Do I add Air Con or MVHR to existing A2W ASHP?
We have ‘signed on the dotted line’ today for a Panason...
By Toodles , 4 days ago
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RE: Heat pump branding. Clever, contemporary… or a bit too much?
...or it was there and was lost thanks to laziness and ...
By Majordennisbloodnok , 4 days ago
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Bufferless design & control of Chinese air to water monoblock hybrid heat pump in Alberta, Canada
This post is about how I successfully configured a buff...
By Tony.Stolz , 4 days ago
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The installer visited yesterday and suggested the noise...
By JamesChatz , 4 days ago
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