dpmiller Posted June 12, 2018 Share Posted June 12, 2018 I'm aiming for a 4kW in-roof system, and wonder if the collective have an opinion on where is best on our roof profile to target. In the diagram, brown is the ridgeline, thick black are valleys. Roofslope is 40deg. I'm thinking landscape near the verges in areas 1 and 2, and portrait in area 3 should get the job done , but would 4 be better than 2, favouring the evenings? Ideas? ? Link to comment Share on other sites More sharing options...
mike2016 Posted June 12, 2018 Share Posted June 12, 2018 Which way is South?!! Link to comment Share on other sites More sharing options...
Jeremy Harris Posted June 12, 2018 Share Posted June 12, 2018 My experience is that East does slightly better than West, as the sun rises North of East for a fair part of the year, plus the air seems to be clearer in the early mornings. By late afternoon it's not uncommon for cloud or haze to have formed, reducing the output from a West-facing array. Having said that, I still think there's a lot of merit in opting for an East-West arrangement, as although the overall output may be slightly lower than a South facing array, power is delivered at times when it's more useful - maximum power in the middle of the day isn't usually that useful. Link to comment Share on other sites More sharing options...
SteamyTea Posted June 12, 2018 Share Posted June 12, 2018 27 minutes ago, JSHarris said: My experience is that East does slightly better than West I think that is down to local topology and cooler air in the mornings. There are two ways to look at this problem. Matching Usage Maximising Revenue. Maximising revenue is the easy and cheaper option. As the FiT is set on the installed capacity and nothing else, what is to stop people having a larger system i.e. more modules, that disconnect at set times during the day. So assuming you have room, cash and will, you could have 12 kWp of modules fitted. 4 kWp on the East, 4 kWp on the South and 4 kWp on the West and a time stitch that changes over the modules as the sun moves across the house i.e Dawn to 10AM for the East, 10AM to 2PM for the South and 2PM to sunset for the West. Not exactly in the spirit of the FiT, but may be within the law. Link to comment Share on other sites More sharing options...
dpmiller Posted June 12, 2018 Author Share Posted June 12, 2018 1 hour ago, mike2016 said: Which way is South?!! North up in the drawing, but actual orientation will be about 5deg clockwise from here. No FIT on this @SteamyTea as we're in NI. Three bodies in the house, unoccupied in the middle of the day. Thermal store and immersion diverter in the mix. Link to comment Share on other sites More sharing options...
A_L Posted June 12, 2018 Share Posted June 12, 2018 Slopes 1,3&4, as far as possible evenly split between (1+4) and 3, probably microinverters Link to comment Share on other sites More sharing options...
dpmiller Posted September 27, 2018 Author Share Posted September 27, 2018 Hmm. I've been sitting looking at the plans, ruler in hand, and am unsure whether I can reasonably get more than 12 panels where we're looking at. I did however get what looks like a pretty good quote from Plug-in Solar- 12x 270w Talesun panels, GSE kit, 6x microinverters, and all the gubbins for c. £3.3k inc the VAT. Opinions? Link to comment Share on other sites More sharing options...
PeterW Posted September 27, 2018 Share Posted September 27, 2018 That’s £1.02p per installed Watt so is pretty good in terms of price assuming you are doing it yourself. The Gov Stats office publishes the cost of MCS installed systems and they are around £1.80/w so it would be on par if you got it installed for £2500 so you should have plenty of headroom ! Link to comment Share on other sites More sharing options...
Declan52 Posted September 27, 2018 Share Posted September 27, 2018 1 hour ago, dpmiller said: Hmm. I've been sitting looking at the plans, ruler in hand, and am unsure whether I can reasonably get more than 12 panels where we're looking at. I did however get what looks like a pretty good quote from Plug-in Solar- 12x 270w Talesun panels, GSE kit, 6x microinverters, and all the gubbins for c. £3.3k inc the VAT. Opinions? Have you not got a shed that is for agricultural use to keep your tractor warm and put sheep in it one night a year. Know a guy who put his on one of these. Link to comment Share on other sites More sharing options...
dpmiller Posted September 27, 2018 Author Share Posted September 27, 2018 Shed's for later at this stage. I'm sure the last kW could go there sometime... Link to comment Share on other sites More sharing options...
Declan52 Posted September 27, 2018 Share Posted September 27, 2018 9 minutes ago, dpmiller said: Shed's for later at this stage. I'm sure the last kW could go there sometime... You not following the rhi proceedings Link to comment Share on other sites More sharing options...
dpmiller Posted September 27, 2018 Author Share Posted September 27, 2018 no tbh. It's all a load of bull**** but that^^ makes sense now. Uhh-huh. Link to comment Share on other sites More sharing options...
Declan52 Posted September 27, 2018 Share Posted September 27, 2018 I think it's fascinating. Every day the more that gets revealed the more I reckon a bunch of pre school kids could do a more honest and better job. Link to comment Share on other sites More sharing options...
ProDave Posted September 27, 2018 Share Posted September 27, 2018 9 minutes ago, Declan52 said: I think it's fascinating. Every day the more that gets revealed the more I reckon a bunch of pre school kids could do a more honest and better job. The frightening thing is the lady responsible for that now has TM by the whatsits (if she had any) and holds the slim balance of power at Westminster. Link to comment Share on other sites More sharing options...
Declan52 Posted September 27, 2018 Share Posted September 27, 2018 2 minutes ago, ProDave said: The frightening thing is the lady responsible for that now has TM by the whatsits (if she had any) and holds the slim balance of power at Westminster. How the papers in the rest of the UK haven't picked up on this story is unreal considering they hold the balance of power. Link to comment Share on other sites More sharing options...
Ferdinand Posted September 27, 2018 Share Posted September 27, 2018 (edited) . Edited September 28, 2018 by Ferdinand Link to comment Share on other sites More sharing options...
Tennentslager Posted September 27, 2018 Share Posted September 27, 2018 3 hours ago, Declan52 said: How the papers in the rest of the UK haven't picked up on this story is unreal considering they hold the balance of power. Oh plenty of us know...don't expect the newspapers to tell you though...or the BBC Link to comment Share on other sites More sharing options...
dpmiller Posted January 18, 2019 Author Share Posted January 18, 2019 Just to complete this, the kit arrived from Plugin Solar at the start of the week. We ended up with 12 black Sapphire 270W panels, full GSE kit to suit our particular groupin 2/8/2 all landscape- including top flashings. Inverters are Hoymiles micros, two duals and two quads, all with individual panel MPPT. Link to comment Share on other sites More sharing options...
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