andymb Posted January 4, 2021 Share Posted January 4, 2021 Good evening everybody, I'm wondering if anybody could please help me with filling in a G99 form please? My current situation is - currently don't have a mains electricity connection, considering approx 14kW PV array BUT I'd like to know if the D.N.O will allow me a large enough export allowance to cope with the excess/unused energy from the 14kW array. If we already had a grid connection I'm not too sure I'd be bothered about exporting to the grid but as I'm trying to get a grid connection, it seems sensible to try for G99 compliance at this stage. I've spent most of the day trying to work out some sample figures to put on my G99 form (sections 2 and 3) but haven't got anywhere - I thought that all of the figures would be on the inverter data sheets but they are like a foreign language to me! - I haven't even got the first section (firm export requirements) filled in! If anybody has a similar sized system or has been through the G99 application process, please please please would it be possible for me to plagiarise your form? obviously if I find out that G99 is feasible then I'd ask a proper MCS installer to submit a "real" form but at present I'm just trying to work out if it's an option and the DNO won't give me an answer without making an application. many thanks in advance for all and any help, Andy Link to comment Share on other sites More sharing options...
SteamyTea Posted January 4, 2021 Share Posted January 4, 2021 Won't getting a 3 Phase supply get around the problem easier? Link to comment Share on other sites More sharing options...
andymb Posted January 4, 2021 Author Share Posted January 4, 2021 Hi SteamyTea - I did look at getting 3 phase but it was prohibitively expensive - 3 phase hasn't made it this far yet! also part of the reason that getting a connection is as difficult/expensive is that we have to upgrade the local transformer which is already at full capacity, so I thought that if we are upgrading the transformer we may as well aim for G99 compliance too - IF I can get the form filled in!! Link to comment Share on other sites More sharing options...
ProDave Posted January 4, 2021 Share Posted January 4, 2021 So what question(s) on the form do you want help with? Link to comment Share on other sites More sharing options...
andymb Posted January 5, 2021 Author Share Posted January 5, 2021 hi ProDave, it was all of part 2 and 3 really, I really appreciate your offer of help, but `I think that maybe I'm just better off paying someone to do me a "dummy" application (just to see if it's feasible)....im so far out of my depth with this..... thanks again, Andy Link to comment Share on other sites More sharing options...
ProDave Posted January 5, 2021 Share Posted January 5, 2021 I am not familliar with the new forms, can you post a copy of the form or type out the specific questions you do not understand? Link to comment Share on other sites More sharing options...
TonyT Posted January 5, 2021 Share Posted January 5, 2021 https://www.navitron.org.uk/forum/index.php?topic=31836.0 maybe this can help Link to comment Share on other sites More sharing options...
andymb Posted January 5, 2021 Author Share Posted January 5, 2021 ProDave - I have attached the form - its sections 2 and 3 that I'm totally stuck with - I really do appreciate your offer of help but you'd basically be filling the entire form in for me so please don't feel compelled TonyT - I had found that thread but somehow hadn't realised it went for 9 pages - I'll have a read later thanks for your input chaps, when I do get this sorted obviously I'll post it up so that anybody as clueless as myself can use it ? blank g99.pdf Link to comment Share on other sites More sharing options...
cbk Posted June 9, 2022 Share Posted June 9, 2022 AndyMB did you get this sorted? I've just discoiverd I need to complete the G99 forms as well and am just as confused as you were. Any advice or sample form would be really helpful. Link to comment Share on other sites More sharing options...
Dillsue Posted June 9, 2022 Share Posted June 9, 2022 I think the form in previous posts may be the wrong one?? For <50kw generators its form A1.1 which is pretty straight forward but ask if your stuck Link to comment Share on other sites More sharing options...
cbk Posted June 10, 2022 Share Posted June 10, 2022 That looks a lot simpler. My set-up is single phase so the limit looks like 16kw but I will check with Western Power. I'm planning to use a Solis RHi-5G Hybrid inverter and and an 8.8 (max)kw PV array plus Pylon US5000 4.8kwh battery. It seems DNO will require me to provide some sort of export limiter to ensure export to grid can not exceed 16A. Any suggestions for simplest way to do this? Link to comment Share on other sites More sharing options...
JohnMo Posted June 10, 2022 Share Posted June 10, 2022 Most inverters are configured to limit or zero export. You need a G100 compliant inverter. Link to comment Share on other sites More sharing options...
cbk Posted June 10, 2022 Share Posted June 10, 2022 Solis is G98 and G99 compliant but not G100 😞 Link to comment Share on other sites More sharing options...
SteamyTea Posted June 10, 2022 Share Posted June 10, 2022 1 hour ago, cbk said: Solis is G98 and G99 compliant but not G100 😞 This may help you. Shows you what to look for. ENA_EREC_G100_Issue_1_Amendment_2_(2018).pdf Link to comment Share on other sites More sharing options...
Wil Posted June 10, 2022 Share Posted June 10, 2022 If you’re with WP, you’ll almost definitely be forced to limit to 16A or 3.68kW max output as their network is oversubscribed for solar and they’re being difficult about new connections. You’re in a different part of their area so you may be luckier than me. If stuck with a limit and a big array you’d either have to zero output or G100 and limit to the above. Link to comment Share on other sites More sharing options...
cbk Posted June 11, 2022 Share Posted June 11, 2022 19 hours ago, Wil said: If stuck with a limit and a big array you’d either have to zero output or G100 and limit to the above. Is there a device I can add to limit the output to 3.68kw? Link to comment Share on other sites More sharing options...
Conor Posted June 11, 2022 Share Posted June 11, 2022 28 minutes ago, cbk said: Is there a device I can add to limit the output to 3.68kw? Your inverter can limit the export. That's what I've had to do with mine. Once my G98 is approved, I'm putting in a G99 for the extra. Link to comment Share on other sites More sharing options...
Dillsue Posted June 11, 2022 Share Posted June 11, 2022 G98 is a notification so they cant reject your <16 amp installation. They may query paperwork but thats all they can do. I would put your G99 in straight away as certainly in our area things are getting processed very slowly. Put ours in months ago and other than a confirmation of receipt, not heard a peep Link to comment Share on other sites More sharing options...
Dillsue Posted June 11, 2022 Share Posted June 11, 2022 2 hours ago, cbk said: Is there a device I can add to limit the output to 3.68kw? Theres lots of ways of limiting export but if you want to do it in a clever way, youll probably need to get G100 compliant inverters Link to comment Share on other sites More sharing options...
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