Dillsue

Is that a statutory requirement, manufacturer guidance or word on the street??

I think the general guidelines are for on roof mounting where there's plenty of opportunity for the wind to get under the panels the nearer to the edge of the roof they are. If it's an in roof install then I guess its the detail of how the mounting trays are fixed on the edge of the roof??

Have a look at PVGIS to see what youre likely to get year round. You can get figures by the hour/day/month etc so should give you something meaningful to crunch your figures with

Does the BUS grant even apply to new builds?? Isn't it for replacing fossil fuelled heating.

With our DNO I just put self installed and all went through OK. You're not bound to use the installer on the form so you can just put down any company you want and change the installer later on.....perfectly legit to change installer any time you want.

An MCS install covers structural assessment of your roof so not just electrical work

There's an awful lot of clever people advising governments around the world that climate change can be slowed then stopped then reversed, to some degree. The full ramifications of climate change, or more accurately climate unpredictability, won't be known until they happen but it's a massive risk to leave it to happen and "best deal with it" after it's happened. How would you forsee we deal with this- global population is forecast to peak at 10 billion, 2 billion more than current. African population is forecast to grow by 1 billion in a continent not known to be able to always feed itsself. Let's say future unpredictable weather events trigger half a billion Africans to go on the march looking for food. How do you see the global community dealing with that? The farmer at the back of us told me last year he'd lost circa £60k of root veg and winter wheat in the last few years due to flooding. Looking at the areas that were flooded I'd guess at 20% of his land was under water for a prolonged period. There's around half of an 80 acre field of carrots still in the ground at the back of us that got left when the field partly flooded at the end of November. It's all looking pretty dead now but I don't know if they'll be salvageable if it dries out. This winter Our plot has been the wettest it's been in the 24 years we've been here so I don't see the farmers rate of flooding getting anything other than worse than it is now. How do you see the global farming community dealing with increasingly destructive weather events? You're correct in assuming I believe that if everyone did their we can manage climate change. You, me and everyone in the first world caused the problem so we need to all do our bit to sort it out

It's mentioned often enough that dealing with climate change is going to come at enormous cost and that is undoubtedly going to change our way of life. If everyone engaged with it, the cost will be less. To resist is only growing the problem and pushing the problem onto future generations which is a very selfish thing to do.

Maybe Labour have a cunning plan but the BEIS think differently https://www.gov.uk/government/publications/energy-and-emissions-projections-2023-to-2050

Octopus do heat pumps from £500. If you look at any deprived area via Google earth the roads are rammed with cars and vans each of which will fairly likely cost more than £500 to keep on the road. I'd be fairly certain that eco grants/zero interest loans are available for those struggling to find £500 It's all about choices and very few people give a toss about climate change so the right choices aren't being made.

My lad lives in S Korea and all the services in his block of flats are individually metered incl hot water. All managed centrally within the block and distributed to all the flats. All tried and tested as its the norm over there and I guess lots of other countries

For anyone thinking we're heading to electricity being from 100% renewables and the end of gas you probably want to look at gov forecasts here https://www.gov.uk/government/publications/energy-and-emissions-projections-2023-to-2050 section 4. A couple of years ago, gov forecasts showed 14% natural gas generation in 2050, presumably with carbon capture, if they can get it to work.

The 10 panels we have on the ground are on a 2x1" roof batten frame sat on 9" hollow concrete blocks half buried in the ground end on. Strategically placed strips of damp course keep any rain off the timber where it comes through the gaps between panels. It's bone dry and on its 3rd winter so seems to be holding up.

If you're considering space heating backup then a fan heater may well give you alot more resilience than an immersion

Any inverter thats supports export limitation will have an energy meter/CT clamp to monitor how much is going to the grid and throttle output if there's too much being exported. You can have whatever size inverter you want so long as it is certified to G100 for export limitation.... that's what G100 is for.

Octopus Outgoing pays 15p/kwh so seemingly triple what youre getting now. Worth the faff for over a grand a year??

No and no! Under G98 the inverter must be limited to 3.6kw and never produce more than 3.6kw so you cant have a 10kw inverter. If you want a 10kw inverter that can pump 10kw to your house but only 3.68 or less to the grid, then you need export limitation which is done via G99 with a G100 supplement to cover the setup of the export limitation. If you've got a grid connection you can't avoid G98/99/100 if you're connecting a PV inverter. The Gxx processes are there to help the DNO manage the grid for everyone's benefit so take whichever route is applicable Personally if you've potentially got 14kw of panels I would go for G99 and see what the max export they'll allow is...you might be surprised. We got 7.3kw without any dramas and we've got that for "ever". Capacity allocation seems to be done on a first come first served basis so if you went for a 3.68kw system and all your neighbours did the same you might not get any extra export allowance in the future as all your neighbours have used up all the spare capacity in the local grid. If you got consent now for 5/6/7/8kw then you've likely got that for life:)

Yes via a G99 and G100 application using an inverter certified for export limitation. Do you know how big an array you can fit in? I'm sure other manufacturers do it but I believe the the current solaredge range of inverters can have double the inverters kw rating in DC input from panels. A 3.68kw inverter can have around 7.3kw of panels hooked up to it, even more if they aren't all facing the same way so not all generating at max at the same time. As the inverter is limited to 3.68kw its G98 compliant so notify only. Not the most efficient use of the panels in the summer but you'd be using the bulk of the panels output outside of summer. Youd avoid a G99 application/cost

Have a good think about who's looking after all the off grid gubbins if somethings gone wrong and you're not around or are taken ill. Not sure the type of property your looking to power but if you come to sell you'll likely be selling in avery niche market. The Victron forum is where I'd start looking for ideas but no idea if the knowledge base extends to whole house design??

Done the G99 which was straight forward. No idea on the G100!

Google "G99 commissiong form" and find what's needed for G99 but if you're using export limitation I'd guess theres an extra G100 test record available from the ENA or your DNO

Won't the docs you previously submitted be more or less identical for the 3.68- 5 kw upgrade??

I know nothing about your set up but logic says that if the problem occurred after enabling the remote control, it's something to do with the way the remote is controlling things. If you revert back to exactly how things were before adding the remote then see if the fault clears. If it does, you've pretty much ruled out any problems with plumbing/pumps/filter etc and can focus on things the remote is doing wrong

From previous forum discussion I belive that export on one phase offsets import on the other 2 phases, but only if the export and import happen at the same time. If you export and import at different times both get logged by the meter but don't offset each other in the meters registers.

I use Solaredge and you can pick them up on Ebay for £15 upwards if you're prepared to wait. Otherwise £40? upwards. They have a 25yr warranty so I'm not bothered about buying privately. Optimisers/micro inverters are wired in a string the same way as panels can be wired. The panels plug into their optimiser but arent functionally part of the string. The difference is that where a faulty/shaded/lower powered panel in a conventional string can block or restrict the power coming from the rest of the string, optimisers don't. Each optimiser allows power from the rest of the string to pass through it unrestricted and adds any power it has available. If an optimiser has no power to add because its panel isnt producing any, the rest of the string carries on producing as normal. Each optimiser has an MPPT in it to get the most power out of its panel. You can connect whatever panels you want to optimisers so long as the panels output is within the optimisers input range AND the optimiser is compatible with other optimisers in the string. If youre asking about mismatched panels in a conventional string then yes you can, but the lower rated panels will likely restrict the output of any higher rated panels. It's doable but alot more restrictive than using optimisers/micro inverters