@editor The route isnt narrow by any means.

They even allow 1 per final circuit. So my house has 2 ringmains and 2 not-used spurs. I can have 800w on each of them! 

@sonosppp, I think we may be talking slightly at cross-purposes. When I said the route was narrow, I meant the type of product covered, rather than necessarily the number of devices that may eventually be allowed. My reading is that the new route applies specifically to compliant plug-in solar and does not extend to plug-in batteries or solar products incorporating storage.

You’re right that the product specification appears to allow one 800VA device per separate household socket circuit. However, it also seems to say that the current G98 position still limits this to one device per household unless and until G98 is amended. So the product rules may be written with multiple devices in mind, but the network-connection rules look as though they remain the practical limit for now.

With limited knowledge, I’d also be cautious about treating an unused spur as a separate final circuit. If it is simply taken from one of the ring mains, I would have thought it remains part of that same circuit rather than creating another 800W allowance. I think @transparent can probably give the most insightful feedback here.

Posted by: @editor

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@sonosppp, I think we may be talking slightly at cross-purposes. When I said the route was narrow, I meant the type of product covered, rather than necessarily the number of devices that may eventually be allowed. My reading is that the new route applies specifically to compliant plug-in solar and does not extend to plug-in batteries or solar products incorporating storage.

You’re right that the product specification appears to allow one 800VA device per separate household socket circuit. However, it also seems to say that the current G98 position still limits this to one device per household unless and until G98 is amended. So the product rules may be written with multiple devices in mind, but the network-connection rules look as though they remain the practical limit for now.

With limited knowledge, I’d also be cautious about treating an unused spur as a separate final circuit. If it is simply taken from one of the ring mains, I would have thought it remains part of that same circuit rather than creating another 800W allowance. I think @transparent can probably give the most insightful feedback here.

Unless @transparent disagrees I would say 'circuit' means 'circuit at CU' ie a separate circuit implies its on a separate breaker.

G98 might be limited to one inverter but G99 isnt.  So you may need to get permission but its extremely unlikely to be refused if each is only 800W.  My DNO says it will auto approve anything up to 5kW total.

I agree. I think a 'circuit' is an electrical supply from a breaker in a Consumer Unit.

Although we usually imagine a circuit as being a power ring, I have a radial supply to (most of) the power outlets in my kitchen.

Because the cable used for that radial is properly sized at 6mm² it would have no trouble at all in having plug-in solar connected to it.

Posted by: @editor

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... just this week alone I've been contacted by two Chinese plug-in manufacturers asking if I'd like to review their new offerings.

Plug-in manufacturers are not yet being considered by the Secretary of State for ESNZ, but it would be a natural extension of the legislation.