SunnyDevon

Great, thanks for taking the time to respond. WPD, as in Western Power, now National Grid down here on the Devon / Cornwall border? Guessing so as that is a Plymouth number.

@Dillsue most informative, thank you, there's always more to everything than initially meets the eye.

@joth, 3 phase, unfortunately not. @SteamyTea Simple phone call - good idea, why not. Why wouldn't I have tried it? Well, I've never been here before 😉 so we'll give it a go. @Dillsue good idea, I'll have a poke arround their web and see if there are some useful contact details. I don't see why exporting 50A is too controversial, it's a new grid connection with an incoming 100A fuse. Why do I want to do this? Well I didn't want to get into this too deep but I'm happy to expose my insanity and have people with more experience correct my expectations. We face south and have no shading, our measly 3.6KW PV system generates about 3.6MWh per year (nice correlation of numbers). The PV heats all of our hot water upboosted for 10 months of the year. We consumed 2.6MWh of generation and exported 1MWh last year. We've moved to Intelligent Octopus with minimum 6 hours at 7.5p/KWh and are waiting for our Smart Export to be set up at 15p/KWh. We are not wasting a lot of generation with an average spring or autumn day producing 800-1,200 W of generation with some overcast - great for the hot water and all the background loads - but it won't charge a car. I believe it's part of the Type 2 EV chagrining definition that the charger needs a minimum of 1.4KW else it stops charging. So picture a typical fluffy cumulous cloud summers day and our EV starts /stops / starts charging, its hopelessly inefficient. So for us to ride the peeks and troughs, car charging needs a system twice our size and to gain a reasonable charge triple our capacity would be good. We don't as yet have a battery (apart from the one with a wheel at each corner) and the builder kindly gave us an LPG boiler and tank. So clearly an Air or Ground Source heat pump is on the cards. We have a perfect site for a ground array (refer to initial post at the top) that we won't have to look at and panels are SO cheap, then there is the possibility zero VAT rating from the start of this month. Oh, clearly no FIT. So with that bit of background there are two ways we can view our electrical setup. A) Generate as much as possible, self consume as much as possible by car charging half the year and heat pump support for perhaps 3-4 months, always having enough generation for background loads on the glummest of days. B) More realistically at the moment, consume all our needs time shifted from the grid off peak at 7.5p and export as much generation as possible at 15p. Should the great Octopus tariffs disappear, we could always fall back to A) above. Either way why wouldn't I want to add a shed load of panels? If you have made it this far, thank you 🙂

Thank you, yes I have become aware of inverter undersizing and limiting. Interesting SPEN accepted an informal approach initially, I wonder if anyone has had such an enlightened response from National Grid.

Thank you all, I suppose my key question is - does my DNO (NG down here in west Devon) have a light touch enquiry process. I assume there will be quite a lot of effort in the formal application, so I'm looking for a quick but simple response from them along the lines of possibly, probably, we won't know till we come and inspect, unlikely, no chance, following the first two I'd crack on and acquaint myself with making the application, the latter responses would probably lead to me saving the effort and reconsidering a way forward. Thanks for reading this.

I'd like to gain an idea of how to go about a likely yes/no/SIZE limit for a G99 application before I expend too much effort working out how to make the formal G99 application. In other words, Hello National Grid (our DNO) can I export something near to 50A from my address? Looking for any feedback, tips, opinions, experience of doing this. We've a two year old house in an old cow field that has the benefit of a 3.6kw PV rooftop system from day one, we have an EV, Zappi & Eddi. It is my desire to triple our PV with a ground mounted array. The planers have a home owner process - tell us what your intending and we'll indicate if your likely to gain planning. They have stated that they are required to support green generation schemes as long as it's sensible. So that's good, I'm not going to run into a brick wall, I'd like to seek a similar indication from the DNO. Attached, for interest, our planned PV location which is out of sight of the house and the very few neighbours.

Hello, we've a two year old house in an old cow field. The house has the benefit of a 3.6kw PV rooftop system, we have an EV, Zappi & Eddi. It is my desire to triple our PV with a ground mounted array. The planers have indicated they are required to support our scheme as long as it's sensible. They have a home owner process - tell us what your intending and we'll indicate if your likely to gain planning. I'd like to now get an idea of how to go about a likely yes/no/SIZE limit for G99 before we get in any further, in other words, Hello National Grid (our DNO) can I export something near 50A from my address? Looking for how I might go about that. That's my hello, I'll probably post this into Home Environmental, Alternative & Green Building Methods Renewable Home Energy Generation Photovoltaics (PV) Attached our planned PV location which is out of sight of the house and the very few neighbours