Solar panels and battery - any real world reccomendations?

Noob question. Pending buying our first house, we'd be many years away from affording a loft conversion. Still make sense to (pending a bunch of other things) to install panels on the roof, or better to time it with the loft conversion. Basically - would installing them before the conversion have any consequences? I assume not/minimal.
 
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Noob question. Pending buying our first house, we'd be many years away from affording a loft conversion. Still make sense to (pending a bunch of other things) to install panels on the roof, or better to time it with the loft conversion. Basically - would install them before the conversion have any consequences? I assume not/minimal.
Would you be wanting to add windows to the loft conversion?

Cable routing might be an issue - probably a good idea to know exactly what the loft conversion is going to be like structually so any internal cabling can be routed elsewhere.

Structural strength? Loft conversion might include altering the geometary of the roof trusses. The additional panel weight might factor into this.
 
Question regarding battery storage. I have a single 5.2kWh battery, and I've been surprised since it was set up at how quickly it filled and emptied - and meaning (but never got around to) checking how much energy it was storing to show as full.

Finally got around to doing that (helped by yesterday's usage being relatively simple so easy to work out). I would estimate that taking the battery from it's lower limit of 3% to 100% is taking only 3.5kWh. I wouldn't necessarily expect it to exactly match the quoted 5.2 - but that's only 70% of the stated capacity.

Is this to be expected? Or should I be raising this with the fitter? I assume the latter - but no harm in checking with you lot first.
 
Question regarding battery storage. I have a single 5.2kWh battery, and I've been surprised since it was set up at how quickly it filled and emptied - and meaning (but never got around to) checking how much energy it was storing to show as full.

Finally got around to doing that (helped by yesterday's usage being relatively simple so easy to work out). I would estimate that taking the battery from it's lower limit of 3% to 100% is taking only 3.5kWh. I wouldn't necessarily expect it to exactly match the quoted 5.2 - but that's only 70% of the stated capacity.

Is this to be expected? Or should I be raising this with the fitter? I assume the latter - but no harm in checking with you lot first.

The smaller batteries don't tend to have the same DoD as the larger ones for some reason. You may find that the DOD is stated on the spec as less.
 
Had my inverter acting a bit strangely last two days. Givenergy Gen 1 - set it up to export yesterday evening between 4 and 7, then turned on eco mode just after 7 to use the battery but it wouldn't pull from the battery. Had to restart it, then force it to export and then turn that off to get it to play ball. Then this morning once the sun came up it wouldn't charge to the battery up and diverted to grid until once again set it to export and then turned it off again. Despite it charging fine between 2 and 5am.
 
Question regarding battery storage. I have a single 5.2kWh battery, and I've been surprised since it was set up at how quickly it filled and emptied - and meaning (but never got around to) checking how much energy it was storing to show as full.

Finally got around to doing that (helped by yesterday's usage being relatively simple so easy to work out). I would estimate that taking the battery from it's lower limit of 3% to 100% is taking only 3.5kWh. I wouldn't necessarily expect it to exactly match the quoted 5.2 - but that's only 70% of the stated capacity.

Is this to be expected? Or should I be raising this with the fitter? I assume the latter - but no harm in checking with you lot first.
mine forinstance shuts off at 20% to protect the battery. whilst i can over ride it all the way down to............. 5% i think, greenscape energy - the installers claim it will void my warranty with them.
my 3x2.4kwh batteries (7.2 in total) gives me a usable 6kwh of storage. this wont account for all your loss, but a chunk of it.
 
Would you be wanting to add windows to the loft conversion?

Cable routing might be an issue - probably a good idea to know exactly what the loft conversion is going to be like structually so any internal cabling can be routed elsewhere.

Structural strength? Loft conversion might include altering the geometary of the roof trusses. The additional panel weight might factor into this.
Thank you and yes we would definitely want windows. I'm obviously thinking way too far ahead but just wanted to get an idea as the loft would cost x5-10 more than the solar panels, so would definitely be more prone to doing that first.
 
I have fired a small shot across the bow of my installer just now.

I emailed the two operating director owners saying I plan to raise a complaint / LBA and wondered if they have a procedure or if not I will simply send a letter.
Mentioned being able to refer to MCS once this has been done and the required two week timescale is complete.

Hopefully it will trigger them to react, if not I will be polishing the complaint letter over the bank hol and will send Tuesday next week.
 
Had my inverter acting a bit strangely last two days. Givenergy Gen 1 - set it up to export yesterday evening between 4 and 7, then turned on eco mode just after 7 to use the battery but it wouldn't pull from the battery. Had to restart it, then force it to export and then turn that off to get it to play ball. Then this morning once the sun came up it wouldn't charge to the battery up and diverted to grid until once again set it to export and then turned it off again. Despite it charging fine between 2 and 5am.

This conversation may be better in the Flux thread, but what I've found over last few days is that setting Eco mode enabled, disabling export, enabling timed discharge does the following:

Timed Charge works as planned in the Flux window.
Timed Discharge prevents battery charging from solar in the 16:00 - 19:00 window, excess solar goes to export.
Outside the Timed Discharge window, the battery behaves as normal and charges from solar.

Experimenting a bit last night, I issued a Timed Export for an hour from 18:00 - 19:00. This worked fine and battery was exporting.

At the end of the window I enabled Timed Discharge again, but after 19:00 it was taking power from the grid. So I had to go and switch Eco mode on again, that made it work as normal.

Not yet seen mine acting totally randomly like that, it's always done what I've asked it to do more or less.

Tonight I will do the export again but I will set it to switch back on Eco at the end, and see if that carries on doing what I want. Which is battery not charging 16:00 - 19:00 along with optional export from 18:00 - 19:00 if the SoC is high enough to allow it (above 90% on my config).
 
This conversation may be better in the Flux thread, but what I've found over last few days is that setting Eco mode enabled, disabling export, enabling timed discharge does the following:

Timed Charge works as planned in the Flux window.
Timed Discharge prevents battery charging from solar in the 16:00 - 19:00 window, excess solar goes to export.
Outside the Timed Discharge window, the battery behaves as normal and charges from solar.

Experimenting a bit last night, I issued a Timed Export for an hour from 18:00 - 19:00. This worked fine and battery was exporting.

At the end of the window I enabled Timed Discharge again, but after 19:00 it was taking power from the grid. So I had to go and switch Eco mode on again, that made it work as normal.

Not yet seen mine acting totally randomly like that, it's always done what I've asked it to do more or less.

Tonight I will do the export again but I will set it to switch back on Eco at the end, and see if that carries on doing what I want. Which is battery not charging 16:00 - 19:00 along with optional export from 18:00 - 19:00 if the SoC is high enough to allow it (above 90% on my config).
i followed the same steps I have done for the last week which made me query it. Got it going again, but wondering if anyone else has seen similar.
 
i followed the same steps I have done for the last week which made me query it. Got it going again, but wondering if anyone else has seen similar.

The portal isn't directly connected to the system, so it's possible it simply failed to send your changes, which is why I like doing more of the automation with GivEnergy local.

This shows me what mode the battery is in directly as well, see this data in HA (shows it's in Eco mode):

O15FzUR.png

Get your HA configured with this and it may give you some better insights into the system behaviour!
 
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So they seem to have taken it fairly seriously so far.
One member of staff has been tasked to resolve it.

They have come back with that they think its firmware or (at last finally!), hardware!
I said well firmware has already been updated, they came back to say they have updated ARM and DSP updates whatever they relate to.

Going to force discharge my battery later so it hits go window for charging at 10% SOC. We can easily see then if it has made any difference.

I think they have finally accepted there is an issue, but that means they have in effect just passed the problem to Solax who are seemingly practically useless.
 
Question regarding battery storage. I have a single 5.2kWh battery, and I've been surprised since it was set up at how quickly it filled and emptied - and meaning (but never got around to) checking how much energy it was storing to show as full.

Finally got around to doing that (helped by yesterday's usage being relatively simple so easy to work out). I would estimate that taking the battery from it's lower limit of 3% to 100% is taking only 3.5kWh. I wouldn't necessarily expect it to exactly match the quoted 5.2 - but that's only 70% of the stated capacity.

Is this to be expected? Or should I be raising this with the fitter? I assume the latter - but no harm in checking with you lot first.
To add a part answer to this myself - GivEnergy agree that the battery isn't showing the correct capacity. The think it's needs a calibration, which they will hopefully be performing remotely tomorrow.
 
Thanks mate really appreciated. :D

Yeah I am probably being too soft here. I think I am going to sharpen it up a bit plus get it into better English as well before I send it. Was a bit of a semi formatted brain dump when I posted up.

I was kind of holding back on the firm dates if they did not respond properly but then again I may as well go balls in now I guess, and just make it a LBA.

My only minor issue with saying I will return it is that its also panels so they could potentially call my bluff there and I wouldn't want that, hence saying I would get it fixed and charge them for doing so.
The panels and inverter are fine (well inverter for the DC side from panels). Finding someone to actually uninstall it would probably be drama to say the least.

I think I may say I would contact another company with a view to replacing the batteries, BMS and inverter and recover the costs from them. Thats probably £8k of cost there so should be enough to peak their attention.
Plus it leaves the panels in place!
I have been to court more times than is good for my health.

First thing to do is establish the wait before you can get a case to court. It seems to be a year minimum at the moment.

Getting the sympathy of the court is vital to the outcome and indeed the extent to which your claim will be upheld. A partial win is not really a win. To do this you have to make yourself out as very reasonable and the other party as the opposite of this. Just the issuing of proceedings is often enough to get them to deal with the issues, but you need to be seen as reasonable prior to this point. The courts do not like to be seen as a form of leverage, so you need to make it look like a last resort

Over 50% of my cases have involved the defendant not turning up. (They know they will lose so why bother?). In this eventuality the case will automatcally win and the judge will be most likely be inclined to grant your claim in full. He/she will want to move onto the next case asap.

Taking people to court is not a route I recommend, but sometimes there is no other option. If the defendant goes out of business in the run up to court, no redress is available.
 
I have been to court more times than is good for my health.

First thing to do is establish the wait before you can get a case to court. It seems to be a year minimum at the moment.

Getting the sympathy of the court is vital to the outcome and indeed the extent to which your claim will be upheld. A partial win is not really a win. To do this you have to make yourself out as very reasonable and the other party as the opposite of this. Just the issuing of proceedings is often enough to get them to deal with the issues, but you need to be seen as reasonable prior to this point. The courts do not like to be seen as a form of leverage, so you need to make it look like a last resort

Over 50% of my cases have involved the defendant not turning up. (They know they will lose so why bother?). In this eventuality the case will automatcally win and the judge will be most likely be inclined to grant your claim in full. He/she will want to move onto the next case asap.

Taking people to court is not a route I recommend, but sometimes there is no other option. If the defendant goes out of business in the run up to court, no redress is available.

Thanks.
Yep whilst I haven't actually done much in regards court directly I am pretty familiar with the ins and outs. I was an FD previously and we had a lot of court cases to get money out of the building trade.
Plus I have a mate who is a solicitor so whilst I try to avoid bothering him too much if if gets that far I will get some advice from him.
I do run things like final drafts of letters past him since I prefer to keep them in laymans terms and not obvious solicitors letters, but just to ensure I have not missed something that could be an issue later.

My situation today is as such :
- I fully discharged the batteries last night so that they sat at 10% this morning when they hit the go charge window.
- They charged with a very slightly different profile to normal, probably as a result of the updates applied, going at full charge rate (5.5kw) for slightly longer and giving a much reduced tail for the final couple of %.
- The supplier already emailed to say they could see the same issue around 9kWh input only where as it needs to be around 11.2-11.3 to fully charge bearing in mind likely conversion loss. (they quote 5% round trip and it seems to be about 97.25% effective on the charge cycle with around 5350w being added to the battery with grid draw of 5500w)
- The supplier has requested support from the manufacturer. This is progress since they have not really at any point previously agreed it was a problem. By default I would argue at this point they now have.

I have said to them to wait out this week to see if we get support from Solax so they can hold on the complaint for now and we can catchup after the bank hold if support is not forthcoming.
I am willing to give them a week or so, but somewhere mid/late next week I would start to escalate again. My contract was with them and they need to provide a functioning system, whilst it sucks for them they need to put me in the position of having a working system.
I am going to tell them I expect this to be by the end of May now they recognise that its not working and arguably no evidence can support it ever has. I am concious of the 6 months here. Install was end of Nov so right now they would need ot prove it worked and I don't think they could.

I am not planning further ahead really at this point but expect its going to need some more specialist support and I am not sure if the installers can do that directly.
As such their choices are going to be pressure the manufacturer solax to get me a solution semi quickly or replace the equipment to make me happy and take up their issues with Solax later.

I am trying to be reasonable and think my repeated questions, and attempts to liase on a resolution would evidence that. Even my emails initally asking for the complains prceedure but then saying stand down on that as your are working to fix it are kind of part of the plan to show I am being highly reaonsable.

I am not super worried about them going out of business they are a fairly large family owned company who have been trading for many years, do other stuff as well as solar and would probably not benefit from going under in order to avoid issues with one install.
I would still have the manufacturers warranty anyway, and they I would be far more likely to escalate the procedure and sue them should that be required.
 
Not sure what's different from this than any portable solar generator. To use it, you'd have to unplug from the grid and plug into the battery instead.

Hard to imagine a realistic scenario where you'd unplug the fridge (their example) and try to power it off the battery for a few hours.
 
Not sure what's different from this than any portable solar generator. To use it, you'd have to unplug from the grid and plug into the battery instead.

Hard to imagine a realistic scenario where you'd unplug the fridge (their example) and try to power it off the battery for a few hours.
This one uses a smart plug as a connection between panel, generator and the grid, that allows the battery storage to be used first and can sit plugged into the mains as per the pictures

EcoFlow PowerStream Solar System is a balcony solar system with a portable power station that allows you to use solar energy day and night and reduce energy bills. EcoFlow Smart Plug and EcoFlow app enables real-time energy usage monitoring and optimization. The system is compatible with all EcoFlow power stations and provides backup power during outages. It is an innovative solution that helps users save money and power their homes sustainably.
 
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Not sure what's different from this than any portable solar generator. To use it, you'd have to unplug from the grid and plug into the battery instead.

Hard to imagine a realistic scenario where you'd unplug the fridge (their example) and try to power it off the battery for a few hours.
maybe this link shows the solution better - you can see in the pictures that the generator is plug into the mains

 
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