Pocster

I’m away on a beach at the moment ( lying in the sun thinking about these things ) . Will sort photos Saturday ( of inverter etc. not beach 😎 )

Right ! Helpful thanks . I guess if I grab my inverter model number would help ?

Your diagram makes sense . I have no idea of my configuration. I will ask the installer - though at the moment they won’t speak to me . I only sent them 15 emails a few days ago …

Ermmmmm . You are an optimist yeah ? Schematic produced by whom ? 🫤

Glad you enjoyed our rubbish . So as you say what I ask is possible ? ( not interested in increasing export ) . I *suppose* having a DC battery mitigates the inverter limitations to some extent I.e it could charge at pv maximum generation . Would the DNO object in principle to g99 ( from g98 ) with a limiter imposed ? . After all I’m interested in my internal bottleneck only …

Exactly . I assumed I was being dumb ( yeah yeah ) . In my scenario as it stands if I didn’t have the SE battery but have a 7kw pv array I’d only ever get 3.66 generated . Where’s smarty bullocks @Nickfromwales when you need him !

I’m not touching anything ! Someone will chime in

Only 1 inverter ( ignore Tesla ) Need someone else’s input ! . Yes kwH whatever

Installer says … My SE DC battery can charge at the highest rate my pv can generate . ( it’s effectively a solar buffer ) So in theory an empty SE battery . Sunny day , pv generation at 7kw . Battery charges - great ! Then battery full . pv generation still 7kw . Yet only 3.66 will either go to house load and/or grid … Why ? Inverter limit of 3.66 applies to current “ going through it “ I.e not just exported but house load ????

Ok . Don’t worry about my non standard setup . pv array 10kw . Pv generation 10kw inverter export limit 3.66 Should 6.33kw go to house ? ( assuming there’s a load )

My setup is non standard . There are mis understandings on the installers part and mine . It works - but I’m confused by the inverter … Suppose you have a 10kw pv array and it is generating 10kw Inverter output is limited to 3.68 . My belief was in this scenario ( assume house load zero ) that 3.68 would go to the grid and rest “ lost “ If 10kw pv generated and a Tesla battery ( charge rate 3.66kw ) . Then shouldn’t 3.66 go to grid and 3.66 go to battery ? Is the inverter limit of 3.68 for *everytjing* I.e that’s the most it can deal with regardless of where it is going ? Hope that question makes sense !

Fibber

Nah . Don’t do that . Suspended ceiling means you can access all the f ups !

Ah right . My bathroom is finished yes ! - is yours ? 🤔

10 tubes of lube 🙄🙄🙄🙄

How does your cat get out ?

Define finished ….. 🙄🙄🙄🫤

@Thorfun you’re having suspended ceiling in basement yes ? ( sure you said that ) . So no worries about access if anything does f up . Also remember @Nickfromwales hadn’t built a (expletive deleted)ing house on his own and I have - so ; WORD !

I don’t care about my neighbors 😊

Got ya Those new DNO rules only seem to apply to new connections forcing infrastructure upgrades . So I’m out of luck there . But ! I’m so far from my sub station apparently ( adding to the issues ) that I guess in time a new development could appear forcing the necessary upgrade .

So the issue is raised voltage due to another ac inverter . No device that can limit this ?

Yeah . So it’s an infrastructure upgrade required . So dno’s responsibility to do now ?

Somethings not right . Heres the original reason for refusal I’��m afraid we are unable to permit the installation of any additional generation at this property. The customer already has a significant export capacity (8.6kW) and therefore any additions to this would result in their volts (and those of their neighbours) being extremely high and certainly outside of statutory limits. Whilst in this instance the customer is on a lightly loaded LV main, fairly remote from the substation (both of which contribute to volt rise), I am yet to see an application of this size which can be permitted. Having almost 14kW of generator capacity on a single phase supply will always result in very high volts due to the imbalance created on the three phase network therefore is unlikely to be approved in any scenario.

No . Right in a suburban area ! . DNO just wouldn’t allow due to infrastructure upgrades required ( apparently ) . But now ! - now I got them 😁

Yeah I’m not convinced. But in theory DNO’s are going to have more difficulty rejecting ( or limiting ) things . I’m certainly looking into it . I *presume* also I could apply to increase by export limit of 3.66kwh . They gave me a merry dance last time - so will see what they say ….