Solar PV In Part Shaded Locations
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- Опубликовано: 2 май 2024
- The Evolution of Solar PV Technology
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Over the past 15 years, solar photovoltaic (PV) technology has undergone significant transformations, revolutionizing its efficiency, cost, and accessibility.
This period has seen solar energy transition from a niche, expensive option to a mainstream energy source, driven by relentless innovations and global sustainability targets.
Advancements in Efficiency
One of the most significant changes in solar PV technology has been the improvement in efficiency. Fifteen years ago, the average efficiency of solar panels was around 15%. Today, thanks to advancements in materials and design, modern solar panels can achieve efficiencies of over 22%. This leap is mainly due to the development of new semiconductor materials such as perovskite, which offers higher light absorption and can be used with traditional silicon cells to create multi-junction solar cells that capture more of the solar spectrum.
Cost Reductions
The cost of solar PV has plummeted, making it more accessible than ever. According to reports from the International Renewable Energy Agency (IRENA), the cost of solar PV has dropped by about 82% since 2010. This dramatic decrease is attributed to both technological advancements and economies of scale. As production ramped up globally, particularly in China, the market saw a significant reduction in the price of solar panels and associated hardware.
Manufacturing Innovations
The last 15 years have also seen improvements in solar panel manufacturing processes. Techniques like diamond wire sawing have become more prevalent, which allows thinner and more uniform wafers to be cut from silicon blocks, reducing material waste and enhancing the performance of solar cells. Additionally, manufacturers have shifted towards larger wafer sizes, improving solar panels' output and efficiency while reducing costs.
Integration and Flexibility
Solar technology has become more integrated and flexible, adapting to various environments and uses. The development of building-integrated photovoltaics (BIPV) is a prime example. These solar cells or modules are integrated into building materials such as roof tiles or glass. BIPV serves the dual purpose of building materials and power generators and enhances aesthetic value, which has been a traditional barrier to solar panel adoption in residential areas.
Storage and Energy Management
The integration of solar systems with energy storage has seen substantial progress. The last decade has introduced more advanced solar-plus-storage solutions, which have been crucial in addressing the intermittency issues of solar power. Modern systems are equipped with more innovative, more efficient batteries that store excess power during peak production hours for use during lower production times, such as night or overcast days.
Policy and Market Impact
Policy changes and government incentives have been pivotal in promoting solar PV adoption. Many countries have introduced feed-in tariffs, subsidies, and tax incentives to reduce the financial burden on those adopting solar technology. These policies have been critical in promoting solar energy in residential, commercial, and industrial sectors, further driving the market's growth.
Future Outlook
Looking forward, the solar PV sector is expected to continue its trajectory of innovation and expansion. The focus will likely remain on increasing efficiency, reducing costs, and integrating solar technology into broader applications. Solar PV will play a crucial role in the global energy landscape as the world increasingly turns towards renewable sources to combat climate change.
Recent years have seen an evolution and revolution in solar PV technology. With ongoing advancements, the future of solar energy is brighter than ever, promising a cleaner, more sustainable world.
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#solar #solarpv #photovoltaic
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I like this format Roger, with your after commentary.
Thanks, we stole the idea from Kirk from On The Trowel. He does this on most of his videos.
Really impressed with that system. Bit shocked putting on untiled roof but later on it shows all the flashing. Very clever.
Shoutout uncle bisby & the boys big up yourselfs & that. I remember when you laboured for me and that roger my son proper ledge and that & im glad you’ve remembered all I taught you and that. Easy bruva take it easy big love from everyone with me on the SO wing in bellmarsh !! Keep it up and that I’ll be back on the tools soon and that. Safe roge will ring you for job and gear and that ❤
Enjoyed watching the teamwork and individual skills shown on this video.
god forbid that a panel or micro inverter needs changing
The micro inverter can be replaced from below but they have a good warranty and aren't something that goes wrong very often.
@@SkillBuildersomething that goes wrong very often to date. Plenty of parts to fail, there may be bad/weaker batches or inferior versions sold, some branded as the real deal. More work for the this and the next generation of sparkies, roofers, and the rest of the trades!
Can't you say the same about double glazing units? They're more expensive and complicated than single glazing, and eventually they fail and are a pain to replace. And yet here we are
the real issue is the panel and I had to replace one a year ago which ended up in replacing 4 cause my friend had bought the panels 3 years earlier without any spare panel . The old sizes were no longer nowhere available, not used, no dealer .
And then we had to replace all to get it fixed. Very, very espensive replacenement and repair - do not even think about it cause it was a huge mess, took months to find a reliable solution and panels that somehow would fit cause the seals had already suffered.
@@SkillBuilderhi guys love the channel. But replacement micro from inside the roof would compromise the membrane. I've installed 100s of micro inverters and it's about a 2% failure rate over the lifetime
Great uptake.❤❤❤
The biggest limiting factor on panels, after shading is the heat buildup. I'm guessing that these panels will see at least a 10% drop off on performance on those rare sunny days. This lack of airflow will also severely reduce the lifespan. There's no way that manufactures will test under these conditions.
4% efficiency reduction compared with on roof.
I was thinking the same but I would guess as there are no tiles beneath then there will be much less heat reflection.
Newer 'N type' panels don't suffer from heat the same way I'm told
@@bordersw1239 Do you get much heat reflection from tiles that are underneath solar panels, I presumed the solar panels would take the vast majority of the heat & shaded the tiles underneath?
@@SkillBuilder I hear some many % efficacy figures banded about on various websites or by companies but I never seem to see any actual data or links to studies etc 🤷♂
All well and good the panels being flush instead of surface mount but what happens if one or more go faulty 🤨
Great video of old and new stuff. Like it. Only thing I wasn't keen on the PV is how you change failed inverters. Can you cut and repair the membrane? So roof finish underneath assuming it's a loft needs removable finish - how to pass fire regs on all that? Anyhow inline solar must be the way to do it properly. So the inverters only run once you give them a control supply from downstairs - great idea for the fire brigade. More like this one please. Loved the roofing tips too.
What a beautiful finish .Pure craftsmanship 😍😍👍🏽🧱
Really well filmed and great commentary. Looks like a top job, lovely to see the reclaimed slates. What ridge system will be fitted?
Great system and great camera work. Incredible information.
Thank you, the camerwork is always tricky on a roof with three people but it is good to know that some people appreciate what is involved.
I'm in the process of getting our roof replaced with panels inside, but our solar guy told us the whole panel sits inside a tray. Sounds easier than this system of gaskets/seals...
Really informative Roger 👍👏👍
I’ve had an Enphase microinverter system for a few years, although my solar panels are rack mounted on top of the roof tiles. Works a treat - would recommend if you want to minimise fire risk, and want panel level monitoring.
I be seen a better system where plastic trays are built into the roof then the solar panels are dropped separately into them. Feels much easier to work on after. But I also like this one
sadly in certain areas of the usa, its not viable due to the additive effect of costs, init purchase, installation, min utility costs, and
in my area from 10 to 15 years ( even with a “50 year” roof) it must be replaced due to insurance requirements. this puts the ROI on the solar right up there with a bugatti veyron.
Apologise if I'm getting the wrong end of the stick but are you saying in some areas of the US insurance companies except homeowners to re-roof every 10 to 15 years even if they instal something a like a welsh slate roof in the correct manner, which should last longer than the average human?
12:10 Pretty sure I remember plastic handles in the 70's. Funny that the guy thinks of the 70's as "ancient times". Wood handled tools! Cavemen! Maybe he meant the 1870's.
I worked as an electrical installer apprentice on the railway, signal and telecoms dept, starting in1974, all the screwdrivers we got issued with had wooden handles.
But the railway was always well behind the rest of the other industries. To drill a hole through a 9inch brick wall for a cable to go through I was given a piece of steel pipe with some teeth cut in the end and a hammer, hit and twist I was told. I think it took me most of the day😅
What was the make of the fitting kit? Not seen that one before.
Negative comments aside, thanks for showing these micro inverters in action, I have been thinking about using a couple for a while.
I get the comments about future repair and better efficiency of panels above the roof, but I think they look much neater recessed and the cost savings on not having to slate under parts of the roof must offset the cost of the panels.
I agree, I just don't like to see panels on brackets. If a tile or slate breaks under them you have a problem.
The Enphase micro inverters are the market leaders and use a special polymer. to seal them and dissapate the heat. They have a warranty that is as long as the panel. I am not saying that they don't go wrong and I would try and find a way to replace them from inside the house but if the worst does happen I could take that panel off in a couple of hours with a slate rip.
We had a 9-east, 9-west system with Enphase microinverters put in earlier this year. We're now already beyond the point of covering the total cost of electricity usage (including EV charging) and gas usage (only the boiler left and the plan is to get rid of that this year too), and we've had pretty terrible weather this year so far.
The failure rate on the IQ7 range as far as I can tell is very low: where they do fail, it tends to be within the first year or two. The warranty covers replacement of any failed unit plus i think it's ~200-300 towards scaffolding/access costs, and on our system it's 25y warranty for both the microinverters and the panels.
The per-panel monitoring is nice: we have a chimney whose shadow cuts one panel's output by about 300Wh/day at this time of year. Any issues with a panel or inverter, we'll know exactly which one it is.
They're more expensive than getting a string inverter, but bear in mind you'd have to replace the string inverter in 10-12 years from install anyway, which should factor in the total cost of ownership calculation.
We're only a few months in, and of course technology can fail, but so far we're very happy with our solar + battery system.
Veridian looks good, but if a panel goes bad it's more hassle than using trays and your choice of panel. I hear people will buy a few extra in case one does go down.
Does not look easy if an inverter goes wrong?
I install solar, you are right they go wrong quite a lot too
Roger, how much power can they get from these 3 panels? 15:17 we can see 3 panels. Wondering about rough costs too.
Thanks for the great videos.
There are five panels in this system and with the Enphase microinverter they are roughly £650 each. You can get anything from 1.6 to 2.4 kw hours per panel per day.
I've got no idea what an inverter is, or what is does, or how to fit one.... but what if it fails?
Great video Roger. I am considering the Viridian clearline Fusion and now see the safety benefit of the Enphase IQ8. Do you happen to know which version of the IQ8 they used - I think there are three. Believe the panels are 405w. Concern like others would be accessibility in case of inverter failure and airflow around them. Would the solar cables reach down through a pir insulated cold roof so inverters were on the house side rather than on the roof. Thanks again.
Thinking about it. Can the micro inverter be placed outside the panel i.e. above or below for ease of access. They are ip65 rated
Ignore me:) just read the IQ installation guide and it states they must be installed under the panel. Same comments therefore about accessibility in the event of failure
@@IanB61 Yes, you can mount the microinverter in the loft void if present so accessible from inside the roof, just need to align the membrane edges so cables from panels can feed in. we do it on quite a few installs
Someone may have already mentioned about maintenance of inverter/dc to dc converter(optimiser) under the panel , their lifetime is shorter than panel and requires ventilation to dissipate heat. It will fail faster than the panel. I have twenty solaredge optimisers installed and 4 of them failed after two years, they are all under the panels, need to lift the panel to replace them.
These are micro inverters not optimisers and enphase are quite reliable, more expensive than a string inverters though.
Very nice
I really question the serviceability of that particular system. If one of them micro-inverters stopped working can that particular one be located ? as their doesn't seem to be any way of getting at it without taking off the panel.. Also you would more than likely damage all the flashing especially after a few years when black dirt has got into all those rubber seals which are recessed in the solar panels.. I would also worry about getting the flashing kit in 8 years time which might be out of production or with an incredibly long waiting time..
The micro inverters have a 20 year warranty and it is easier to access them from underneath. You can put the inverters in the loft or you can access them through the ceiling. All you need is a multi tool to cut into the plasterboard.
That assumes the inverter co is still around, and even then would warranty cover just the inverter or all the remedial work as well. I suspect the former.
I like the look of this system very much but I'd not considered the cooling aspect.
That said, I battle with bird nesting with my on-roof system and saw a squirrel run under there the other day, so see mesh now being required.
Why put the inverters on the inaccessible side of the membrane & battens? Surely better inside the roof space (inside a ventilated box if needed). Also, heavily reliant on rubber gaskets which doesn’t like heat cycling much (see rubber o rings on car engines).
There is no water under the panel but the IP testing on these micro inverters is very good. You can put them inside the roof space but if you have a loft room it doesn't look great. They have a 20 year warranty and all the feedback online is that they are largely trouble free.
If one does need replacing you could access it with a multitool through the ceiling rather than taking the panel off.
I install solar, micro inverters go all the time. Sometimes from new
Is there only two panels for the whole installation? Is this one of those SAP value increaser installs?
No there are more panels on the other roof. I said at the start that Tom was showing Jamie how to fit the first pair. Jamie then went on to do the others on his own.
From what material are these tiles made of?
Have you heard of TLX Gold, currently doing replacing a roof with composite slate tiles and laying down the membrane instead of your usual stuff. I've heard it's good.
👍👍👍. Thanks
That adhesive that got put under the top course of slates, could you not put a dap of that stuff under EVERY slate on the roof? That would help stop any of them lifting and getting damaged during storms and high winds wouldn't it?
I don't just mean for this project, but for any roof that gets re-slated these days.
On the Continent they tend to clip every slate but we use nails. Fibre cement slates can curl and the wind can get under the edge or even suck them off but natural slate is usually robust enough to withstand a good storm. There are lots of coastal properties with traditional slate roofs that have stood the test of time.
Would they not be better using silicone spray for lubricating the seals for ease of installation?
apparently not
I was thinking something similar that perhaps an aqueous silicone would be more suitable and non harmful on synthetic rubber seals. It seems the popular opinion is that the windowlene spray is perfect for the task.
@11.54 chisel 🤔😂
Thats me away for a rub down after watching that !! My back and knees are in agony 😂😂😂
To many opportunities for failure, joints failing causing leak paths, failing inverters and what about future panels replacements and finding the same size? I like rails, easier maintenance and most importantly cooler pannels in free air.
Yeah right!! ?
no sag put in the underfelt?
You are right but very few people ever do that. This roof has ventilation so the amount of moisture that will bead on the outside of the membrane will be tiny. I take your point though and i would counter batten. You can buy 12mm treated counter battens from roofers merchants.
As mentioned this system doesnot allow for the recommend gap of 100mm underneath the panels to prevent heat build up , being made worse by sealing in the edges preventing a cross flow of air the fact the installer was unaware of this requirement is worrying .
The roofers work is to a very high standard and more praise should have been given to such skilled men which are hard to find today.
I think on the second panel one of the cabels detached just in the moment they turn it and put it down (7:19 - 7:21)
I saw that too.👍
Good catch -well done
Just a tangle and slip, nothing detached.
It didn't. If you look again there is a straight bit that lies on the batten. It flicked up but laid down. Those connectors click in and can't simply be pulled out.
@@JACKATTACKED 👍
Quality solar panels and a quality install - and the whole arrangement of seals and flashings gives a superb appearance. I cannot imagine the headache to have to do remedials on them - say a micro inverter change. Surely a better design would have been to have the micro inverters below the bottom flashing with longer cables on the panels to reach (without popping off). - Less flashing and less slates/tiles to remove.
That is a fair point but you can get to them through the ceiling. If you have a loft space you can put them on the inside.
Yeah seems logical to have access if possible
What if a panel gets broken and needs replacement? Things get tough...
I also see no safety harnesses, which is kind of disappointing, I expected UK to be stricter in these things than us here in Greece.
Greetings!
? There is scaffolding around the roof. Where to fall.
Ah, your getting the hang of green screen, looking good.
Kneeling on the roof apex of a gable side wall ... nightmare fuel for me :)
scaffolding.
@@SkillBuilder I've acrophobia ( fear of height ) and vertigo ( dizziness, usually at height ). You wouldn't get me on the first rung of the ladder. I can tidy up on the ground floor for you though :). Good bless roofers. Even looking at height work makes me queasy ...
I prefer optimizers over microinverters for in roof applications.
Hope the micro inverter works and no replacement is needed... I have micro Enphase inverters at home, but they are attached under the PV
Could I have these solar panels fitted to my house which is in a conservation area if so could you put me in contact with the fitting company .
Bob
Had Enphase since 2014. Faultless. Bit worried by lack of draught to inverters snd panels though. Looks nice and neat but its going to get really hot in there! Check suppliers warranty on these closed in systems. Id still go for stand off mountings myself …. after all, who looks up anyway?
Apparently they are designed for a very hot environment.
If I was being uncharitable to the designer/owner I'd say the shading from the church would keep the panels cool enough - if the sun's not shining on them there's no solar gain ;-)
I personally don’t like in line solar panel mounting as they’re less efficient, harder to install and if you come to change them you then also need to alter the roof and you’re going to find a panel the exact same size in the future. Plus if the micro inverter goes then you need to be so careful trying to lift those panel back up.
I recently saw an interview with enphase on Gary does solar and under warranty if there is a fault they won’t cover the full cost of exchanging it, it’s usually just another unit plus a ‘contribution’,
Quite honestly the building industry is like that. I have taken out faulty showers etc and never been paid for the labour. That is why I put a mark up on my trade price.
Quite acrobatic! Perched above the panel. Interesting, no safety harnesses (required). Thanks for info about this type of panel.
It is difficult to know where you would put the safery harness and most of the time they just get in the way. There is scaffolding all around so, hopefully a fall would not be catastrophic. If you aren't confident on a roof it is best not to go up there.
Is the BRE doing studies to see how beneficial roof windows are with winter sun? About 250/m^2 in winter? Have all glass roof tiles, no extra windows, and manage the heat that way? 20m^2 giving about 4kW is a lot when you need it. Critical angles etc with a low sun mean it's not easy. Interesting summer challenges to keep the temperature down. Solar PV is great when accessible and you can use the energy. Export tariffs in GB are a rip-off, no net metering.
good slater.. specialist?
Yes, micro inverters do need airflow. I've no idea where the airflow comes from in that roof design. The Enphase rep told me never to mount them like that on a in-roof system and to only run them inside to a loft space.(not that every roof has such a space) for both airflow and easy access. We all know how hot slates in the sun can get.
Looks a Devil of a job to install, but I am sure Gods light will ensure no dark times for future generations to come ...... ⛪🌞
Hi Roger what's the name of the roofer please?
Tony. I will ask him if he wants his details released. I think he might be busy enough with his existing customers.
When they make panels that actually fit the roof & not just ones that are rectangular I might be interested
This looks better, and may be a reasonable solution for reroofing projects and new builds, but I can’t help think that these types of installs will be a nightmare if you ever have an issue with a panel or micro inverter.
Let's be fair, if you have to start swapping out panels you will need some scaffolding. After that is probably a day's work. Yes you can probably change an on roof panel in half the time but the cost is getting the access up there and hiring a guy to do the job. How many roofers are going to come along and charge you half a day? In the end the game is the game.
After the panels life time is up say 15 years i think is normal, it seems like it would be a big job to change them.
Modern solar panels should last 25-30 years some are expected to last 40-50 years. Micro-inverters should last 20-25 years but are reasonably easy to change if you have scaffolding!). Assuming the panels do last 30+ years I suspect the biggest problem with changing them will be that the industry will have altered the sizing by then!
And they are not recyclable, have to go to landfill, not good for the environment.
@@pauln7422 Panels are pretty well 95% recyclable.
@@pauln7422 That is not true. Virtually every part of the panel can be recycled, the problem is that not enough are currently being recycled (although volumes are low). In the UK and EU when you get new panels installed, the installer is legally obliged to take the old ones away for recycling. I understand that currently the old panels in UK are sent to a recycling plant in Scunthorpe or to SE France. Would not be a surprised though if a fair number "accidently" ended up in landfill as not all solar panel installers are reputable
@@justinstephenson9360 Well, maybe that's what I've seen then, piles of them in landfill, or just dumped in heaps. I still do not think they are good for the environment as I believe they contain toxic materials and the extraction of the minerals is not good for the environment or the poor people employed on low wages to extract them.
And what for ? Co2 is good for the planet not bad.
does anyone know the cost of these panels?
£500
Hey, my roof still has tingles... mainly 'cos I had to learn how to replace slates myself, on account of not being able to get any roofers to answer their phones... 🙄
If you sell your house the surveyor will see the tingles and condemn the roof. If you use polymer sealant/adhesive nobody will know. Tingles in the snow are also a problem.
@@SkillBuilder Fair enough. It already had tingles when I bought it, guess the surveyor ignored those! (I'm in wales, lots of old slate roofs with this kind of repair and cement on the underside of the slate, well, on the insulation these days mostly!)
@@SkillBuilder surely one or two tingles on an otherwise sound roof with no signs of nail sickness etc should not alarm a surveyor? I recently used a copper tingle to retain a slate on our 15 year old slate roof because the old slate had split between the nails. I could have used CT-1 but I felt the mechanical retention of the tingle was preferable and after a few years the copper will weather and virtually disappear.
If using CT-1, would you just put a bead of adhesive between the below slate and bed the new slate into it?
Separate question - any tips on stopping wasps from nesting between the slates and felt?
Bit of adhesive? Gone are the days of using lead tingles? Really!
I knew a roofer who would put one nail through the middle of a slate with a dob of black sealant, rather than use a tingle. He rightly said that the amount of water that would get through was negligible an tingles can open up with snow and wind lift. It is also the case that they look awful and any surveyor who sees them is going to say "The roof is near the end of its life".
I rest my case.
I’m surprised there aren’t individual soakers as flashing on the solar panels.
There is the foam and two upstands with a drain channel. The weathering is tested under all conditions with all types of tiles and slates. There will be a minimum pitch recommendation
@@SkillBuilder still prefer soakers as the longer a channel is the more prone it is to getting blocked.
Im pretty negative on these. Microinverters are amazing though:
1. A lot of effort, material for making solar panels flush, adds lots of cost and labor vs a rail system.
2. Having air able to move underneath the panel and microinverters cools them down and helps a lot on generation! This totally removes the air and cooks the space underneith reducing output!
3. Replacing a panel/micro is a nightmare as you can see.
What in the Yeha are these people up to with this enphase any physical map or envoy.
I dont like the idea of mini inverters on the roof. My dads has a single inverter in the loft and it died. My solar also has a single inverter which also died. Putting the fragile weak point in a hard to get area seems mad to me. I also dont like the guards round panels the more air the cooler they are abd the more efficient.
yes a cooler panel is 4% more efficient.
@@SkillBuilder I think it makes a hell of a lot of the difference I find my panels output best on cooler days that have a lot of sunlight. I'd say more like 10% from my experience but my panels are getting on and were probably cheap as I live in a council property.
Tell me something, genuinely, why are copper rivets not used on natural slate tiles, when they are always used on artificial slates ? It seems to me that "top and bottom " fixings on natural slates would not do any harm.
They are only used on certain artificial slates, their purpose is to stop the slates curling up over time, real states and some of the higher quality artificial slates don't have that problem so don't need them.
So stressful, they're all up so high with no tether, if they slip they'll roll through the scaffolding.
No they won't slip through, there are guard rails and toe boards. You would have to be a trained stunt man to make that work but we would love to film it. Relax, nobody died in the making of this video.
Basic PPE noticeable by its absence - seems to be a recurring theme on SB vids these days. Taking a bit of a chance with micro-inverters installed this way as it will be quite a task to replace one when it fails. CDM regs in UK requires hazards to be designed out before construction begins. Don't think this designer has read the regs tbh.
It is always advisable to wear PPE but we are not able to police these things. If we turn up on site making stipulations and demands nobody would let us film anything. The telling thing is that some of the big sites, PPEeed up to the eyeballs, won't let us anywhere near, they are paranoid.
What happens when one of those inverters fails ?
you change it
In roof solar is loosing efficieny due to less cooling by air flow. And in case you have later a damaged panel it is a nightmare to find one that will fit in the spot again.
I had to help to fix such roof and it ended up 3 years later to replace not only the damaged one which ended in replacing 4 due to a different size and shape.
This solution must be terrible expensive and lot of carefull work with all these special parts to seal the roof again plus a risk to leak in 15 years or so.
But I guess you might need it due to the heritage of the building to fit lookwise.
I thought string inverters and bifacial panels were more modern than these old type. Not a fan of no roof. Over the top must be more simple to renew the panels, inevitably a different size by then. Though by then robots will probably do it all!
Don’t like not having slates under the panels
I hate on roof panels. If one slate or tile goes you have a tricky problem.
In roof solar panels are not new but they are also very well known to leak after a certain time, also the air exchange between them is really poor 🤔
Everything and everybody has a life but the seals are good for more than the life of the panels. If there were a leak, so to speak, the tiny amount of water would trickle onto the membrane. In 50 years time a batten may rot but probably won't and the water still won't get through the membrane and PIR board and the foil backed plasterboard.
What’s all this then?
I have had Enphase solar since 2016. They have already paid for themselves and I have lots of trees around me.
Thanks Kevin, it is good to hear from somebody who has experience of this brand. There are lots of people who choose to condemn something they have no experience of.
Can't see any point bothering in the uk with any solar that isn’t south facing
6:40 not actually correct string inverters and panels can handle shade just as well really, look up bypass diode.
Yes I know about by-pass diodes but not eveyone does that.
Those micro inverters in my house I put in the loft. They are a weak point and will fail long before the panels do and changing them will be an absolute nightmare. No way can the even be unscrewed from the batten without removing a panel. Less than ideal design.
This system is going to be a headache to maintain if and when a micro inverter fails.
You best store some spare panels and seals, I will guarantee if you need one in10 years the new one won’t be compatible. Just a leak waiting to happen
Could have been built for a deux chevaux
very good.
Small matter of a church blocking the sun ?
Ok it will work on a cloudy day when light is diffused but most of the year you will get a fraction of the possible output output. Congratulations to the salesman.
Having said that it was a very informative build video, thanks
I highly doubt you actually put this exact setup into a calculator. You didn't say it, but you're implying the person who paid for it _didn't_ do that, and yet you did?
solar panels don’t need direct sunlight to generate electricity if it’s light enough for you to see a solar panel, it’s light enough for a solar panel to generate electricity.
If optimisers are used then that sorts out shading from the church.
@@SkillBuilder p.s please keep up the videos on renewables, I'm just here for the ensuing drama. I'm sure it helps your clicks too
@@SkillBuilder True they generate with any amount of light, but if you want a useful amount of power then you need direct sunlight. Any clever electronics can't replace the sun hitting the panels. Panels in full sun will give at least 5x more power than on a cloudy day, and that is in summer. Add December into the equation and you are getting next to nothing off them due to the low sun angle. If your happy getting 20 watts off a 400 watt panel and think that payback in 50 years is a good investment then fine. Clearly lots of ill informed shouty followers to keep @jamesclark5654 amused.
Imagine if a panel or module fails….. and they do!
That is why you need to buy good ones. 20 year warranty. They have a life expectancy of more than that.
I dropped one of roof of my van and it worked fine after....I've paid zero in electric since I left UK ten years ago...
Sorry, but solar has not taken a 'big leap forward'. It doesn't matter how good the technology gets, it's still subject to sunlight availability. Year ending July 23, UK installed solar capacity, was 12.8GW (20% of total UK capacity), but it actually delivered just 1.3GW (about 10%), which was just 5% of UK demand (figures courtesy of Renewable Energy Foundation). During the winter, I've been regularly watching Gridwatch, and noted, that for the most of it, solar has delivered SFA. Who on earth, is going to invest £thousands, knowing that it will take, years to achieve an RoI?
I need a job truth be told roge son.
Succh a tiny system we have 11kw of panels, couldn't fit more
you fit what you can. where you can, it isn't a competition.
@@SkillBuilder fair enough it isn't a contest and I sounded a bit obnoxious. Not sure how cost effective it would be to only have a few panels, different economics here in Australia, bigger is better here. Because it is more about self consumption than feed in tariff. Also think it is the one of the cheapest countries for price per watt installed it is about $1 (50p) per watt on average
"If you've got a shadow on a string, all the panels shut down". Wrong wrong wrong. Wrong when optimisers are used, and even still wrong given most panels have in-built technology which is similar to optimisers. Disappointingly outdated viewpoint there
Bit of a faff
So was the moon landing but this has a quicker payback and it only took two men.
Roge I ain’t trying to be funny m8. But I wants me money for that last job. I don’t care for your excuses this time as I haven’t been paid off you for the last 5 jobs son. Taking the p**s now I’m sat in jail and tryna get work done but Jimmy won’t pick up that skip unless I send him 100 notes for that gear me and you done before I got birded off for couple years. Please get back to me son hope you is all good even if you are ripping me off
It doesn’t matter how good the panels get still won’t get the Sun and we will still get nothing in winter we’re just in the wrong attitude that’s all and there’s nothing you and me can do anything about it so there is only worthwhile she’ll 45° north of the equator and south otherwise forget it
nice long sentence, well done!
God only knows why people are instralling PV panels, batteries and associated tech, then finding they are getting zero bills and money from the leccy boards.
Could work on the punctuation though @@jamesclark5654
Plenty of people are able to power their house for 6 months of the year with solar in the U.K. Poor for about 4 months of the year but battery storage and cheap over night rates to charge the battery will cover most of their usage.
Nonsense