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Last seen: Aug 12, 2026
@dansus To achieve a full 3kW (3000W / 13A) continuous AC feed-in into your home grid, you will need equip 1× PowerFlex 3000 and at least 1× Extra Bat...
@transparent Thanks for adding this level of accuracy to the thread.
@jamespa Hello, to guarantee 100% compliance across all UK Distribution Network Operators (DNOs) and home insurance policies, the primary and most rob...
We have noticed a few queries across our UK community regarding grid certifications (G98, G100 and G99). We want to provide complete transparency rega...
@jamespa For any battery storage or microgeneration system operating in parallel with the grid (under ENA G98 and BS 7671 Regulation 551.7 regarding l...
@editor Your summary is spot on, and you’ve captured the nuance of the current UK landscape better than most marketing copy does. The technology is ve...
@editor To answer your two specific questions directly:1. Can solar power coming through the AC-coupled Backup connection charge the battery as well a...
@old_scientist @etchedpixels This exact trade-off is why we designed the architecture of the PowerFlex 3000 the way we did:1. Instead of choking the e...
@editor @editor @jamespa @transparent You are correct. The definition of a "plug-in microgenerator" under the 27 August framework explicitly excludes...
@etchedpixels Your understanding is spot on. When connected solely via a standard household wall plug, the battery energy (whether charged from solar ...
@jamespa @transparent Thank you for quoting the scope section from the DESNZ Interim Product Specification (IPS). You are absolutely right, and we app...
@jamespa Hello! The upcoming August 27th specification regulates the maximum feed-in power to the home grid via a wall plug (capped at 800W), rather...
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Degrees of Separation
Latest Posts
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RE: Siting of the external sensor on a heatpump
I agree. However I would also (primarily) expect that ...
By JamesPa , 8 hours ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
You should (almost) always reject having a buffer, by w...
By JamesPa , 12 hours ago
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RE: Navigating the World of Refrigerants In Heat Pumps: A Guide for Homeowners
Indeed we are invvestigating AC at present and are havi...
By Toodles , 15 hours ago
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RE: Is it the house or the equipment?
@majordennisbloodnok I do sympathise. On the original...
By springswood , 17 hours ago
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No, but the heat pump must be capable of delivering a S...
By JamesPa , 21 hours ago
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Sorry to hear about the problems, its going to be somet...
By JamesPa , 22 hours ago
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RE: Daikin ESPAltherma and Home Assistant installation
It's laziness lol The PV system is very chatty, meter...
By bobflux , 1 day ago
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RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
R (The R Project for Statistical Computing, I use it wi...
By cathodeRay , 2 days ago
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RE: Vaillant Arotherm Plus 7KW need a service on it
booked it with Vaillant. will use them until i can find...
By AdamK , 2 days ago
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RE: Adventures in heat loss calculations
I have seen it stated that the declared calorific value...
By JamesPa , 2 days ago
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RE: Two heating zones to one zone
@transparent Many thanks. The garage is fairly well ...
By Profzarkov , 3 days ago
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RE: Vaillant Aurotherm - Heater Wire Position
Ah, good point. I need to check if this was installed i...
By Batpred , 3 days ago
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@batpred thanks for getting a copy. Appreciate the supp...
By Mars , 3 days ago
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RE: Tell us about your Solar (PV) setup
We have a 6.56kW solar PV system (16x 410W panels) inst...
By Rob of York , 4 days ago
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