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Author Topic: Upgrade to pv system but new rate  (Read 3179 times)
danny-solar
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« on: May 12, 2012, 08:30:00 PM »

Hi,

A customer from last year would like to upgrade their system however once we certify the new system and they register it how will the electric company know how to pay the separate rates?
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Justme
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« Reply #1 on: May 12, 2012, 08:37:42 PM »

Pro rata based on pre & post increase system sizes?
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« Reply #2 on: May 12, 2012, 09:43:03 PM »

I spoke to EDF green team on Friday about such stuff - thinking about a small extension on a different orientation. They said that a separate TGM is best, but not essential. They pass the details to OFGEM who advise them on the proportional split if a single TGM. They also said that extensions are relatively easy to process as they already 'know who you are'. Well it could hardly take them longer now, could it!

Mart.
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Just call me Mart.     Cardiff: 5.58kWp PV - (3.58kWp SE3500 + 2kWp SE2200 WNW)
GavinA
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« Reply #3 on: May 13, 2012, 02:22:52 PM »

as above. Fitting a new meter is preferable if at all possible, but they should be able to estimate it on a proportional basis if not - though I can see this not being as trouble free as it might appear to be in the long run, hence the preference for individual meters.
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danny-solar
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« Reply #4 on: May 13, 2012, 02:58:12 PM »

A new meter is not an option for this upgrade. Has anyone had any experience in actually registering such an upgrade?
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GavinA
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« Reply #5 on: May 13, 2012, 04:31:37 PM »

no, but I'd recommend enclosing a copy of the relevant Ofgem guidance with the FIT application and a note clearly identifying what you've done, how you would anticipate the meter readings being apportioned and why etc.
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« Reply #6 on: May 13, 2012, 05:31:13 PM »

no, but I'd recommend enclosing a copy of the relevant Ofgem guidance with the FIT application and a note clearly identifying what you've done, how you would anticipate the meter readings being apportioned and why etc.

Gavin, my knowledge on this is limited to about 5 mins last Friday, but one little tip - the nice lady at EDF stressed repeatedly the importance of only putting the extension size on the extension application, not the new total, might be an 'EDF' thing, but I got the impression that this happens, and bad things ensue! Other than that she sounded quite promising that it was pretty straightforward.

Gavin, I appreciate that you haven't registered an upgrade, but can you take a guess on this scenario

currently have 3.58 on an ESE orientation, thinking about adding 1.5 on a WNW. Do you think I need prior approval from the DNO? No idea how they would treat it, is it a 5.1, or no different to my neighbour adding a 1.5, so two separate installs?

I'm only concerned because they were really difficult last August, first they said I'd need a full review for a 3.7, so with the option of a start date in 7 days I changed the system to 3.58 (better layout if I'm honest), then a different bod rang on the morning of the install, having been passed the enquiry. He asked if the inverters would be G83/1, when I said yes, he asked why I was bothering them then!!!!!

Inbetween the two calls, I'd joined Navitron, and been told, regarding DNO's 'depends who you speak to and on what day', how right those words where.

Mart.
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GavinA
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« Reply #7 on: May 13, 2012, 10:56:16 PM »

you'll need permission.

well, you could risk it, but then you'd also be risking a rejection about the event, and they'd be well within their rights to reject it.

Unless you've got a dual MPPT inverter like the 4000TL and are using the east / west on each input and limiting the output to 3.68kWp, in which case - happy days (but you'll have to work out with your supplier how to split the meter readings, which could work against you if they just split it proportionally to the array size).
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« Reply #8 on: May 14, 2012, 07:07:53 AM »

you'll need permission.

well, you could risk it, but then you'd also be risking a rejection about the event, and they'd be well within their rights to reject it.

Unless you've got a dual MPPT inverter like the 4000TL and are using the east / west on each input and limiting the output to 3.68kWp, in which case - happy days (but you'll have to work out with your supplier how to split the meter readings, which could work against you if they just split it proportionally to the array size).

Thanks Gavin, that was my gut feeling (fear). This comes back to recent comments you made about the changes to FITs being too quick. Hopefully the DNO would approve it quickly, but if they required the whole 10 weeks (I think that's right), then I'm already a month too late to even start. Too much uncertainty, and that's from someone whose already been there and isn't that scared! If you start to throw all this info at Mr & Mrs Nervous, it's hardly surprising if they run away scared.

Regarding single TGM, EDF Lady said that OFGEM analyse the system descriptions (size, orientation, roof pitch etc) and advise them on how to apportion generation.

Mart.
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Just call me Mart.     Cardiff: 5.58kWp PV - (3.58kWp SE3500 + 2kWp SE2200 WNW)
GavinA
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« Reply #9 on: May 14, 2012, 09:29:28 PM »

lol - and how do they get the info about orientation and pitch? seeing as it's not recorded on any of the mounds of paperwork they get afaik.

I assume it's actually base on the sap estimates on each MCS cert, which basically does come from that data.
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