Solar Batteries

[Bloders]

Has anyone recently had any solar batteries fitted?
Any recommended systems (I have the solar already) and an approx cost

 

[Y Fan Wen]

10kwh Huawei battery fitted mid Nov 8k approx..

 

[Percy Veer]

5.2kw GivEnergy Battery installed a year ago. Cost including installation about £3200.

Like you, I already had solar panels.

 

[MrNoo]

Pylontech US5000 x 3 for 15Kw and cost circa £4k, self install, been in a year and had no issue with them. If you're going Lithium they don't like the cold in winter if outside.
Bought mine from ITS Technologies
pylontech-us5000-4-8kwh-95-d-o-d-battery-storage

 

[Exfarmer]

Just had 2 Givenergy 9.5Kw batteries installed circa £10K
very pleased so far

 

[Doing it for the kids]

Just chatting with FIL about this.

Neither of us can make the figures work.

Can someone give us a simple breakdown of the figures explaining how it’s viable please!?

 

[MrNoo]

I think every situation is different!!! What fits one household won't fit another!
I can just go based on my experience so far and approx savings using storage.
I don't export, I have a large (for the house) 11kw array and 15kw storage, I am also not a high user with most of my use at night with obviously a bit during the day.
I ran solar without storage for a few months and found I was pulling a fair bit from the grid in the eves/night.
With storage I pull nothing at all at the moment and have disconnected my supply.
So my last bill, take the month of May-June
Last year I used 420.56kw for that month alone, this year with solar/storage I used 0.12kw or 4 pence worth, so in effect saving myself £145 for the month. I would have to go back through the bills to see what my use was with just solar alone. I really should write it all down. So for my batteries @£1400 inc vat each, 10 months use and one is paid off.
My whole system was only £6.5k so had based ROI of 4 years but it's actually looking nearer 3 and a bit years.

 

[Surface Tension]

Pylontech US5000 x 3 for 15Kw and cost circa £4k, self install, been in a year and had no issue with them. If you're going Lithium they don't like the cold in winter if outside.
Bought mine from ITS Technologies
pylontech-us5000-4-8kwh-95-d-o-d-battery-storage

How many inverters have you got? Also can you connect more than one inverter to your batteries or is it one battery per inverter?

 

[toquark]

I think every situation is different!!! What fits one household won't fit another!
I can just go based on my experience so far and approx savings using storage.
I don't export, I have a large (for the house) 11kw array and 15kw storage, I am also not a high user with most of my use at night with obviously a bit during the day.
I ran solar without storage for a few months and found I was pulling a fair bit from the grid in the eves/night.
With storage I pull nothing at all at the moment and have disconnected my supply.
So my last bill, take the month of May-June
Last year I used 420.56kw for that month alone, this year with solar/storage I used 0.12kw or 4 pence worth, so in effect saving myself £145 for the month. I would have to go back through the bills to see what my use was with just solar alone. I really should write it all down. So for my batteries @£1400 inc vat each, 10 months use and one is paid off.
My whole system was only £6.5k so had based ROI of 4 years but it's actually looking nearer 3 and a bit years.

You won’t generate and store as much in winter as you do in June though, does your ROI factor this in? Genuine question btw - looking to do the same.

 

[Highland Mule]

You won’t generate and store as much in winter as you do in June though, does your ROI factor this in? Genuine question btw - looking to do the same.

11kW array should be able to generate 15kWh most days through the winter, I would imagine. That's not much more than an hour a day of running at capacity, two and a bit hours at 50% etc.

 

[Exfarmer]

11kW array should be able to generate 15kWh most days through the winter, I would imagine. That's not much more than an hour a day of running at capacity, two and a bit hours at 50% etc.

we dream
in December 2022 my one of my 50 Kw arrays averaged 30 kw per day to give 908 kw in total
so an 11 Kw would be looking at 6.44 kw per day on average

 

[MrNoo]

How many inverters have you got? Also can you connect more than one inverter to your batteries or is it one battery per inverter?

Just a single 11kw single phase, it is a rebadged cheapie Chinese one. You can string them together for 3 phase and I believe single phase (but not 100% sure)
3 batteries to the one inverter, I note that there is now a 15kw single phase available

 

[Nukemall]

11kW array should be able to generate 15kWh most days through the winter, I would imagine. That's not much more than an hour a day of running at capacity, two and a bit hours at 50% etc.

My 10kw array averaged 5kwh per day in December.

 

[MrNoo]

You won’t generate and store as much in winter as you do in June though, does your ROI factor this in? Genuine question btw - looking to do the same.

Yes you are quite correct, think the worst was 2kw for a day. Grey day with drizzle hammers production. I just write the figures on the back of an envelope, conservatively so I get a reasonable average.
I have an office day this week so will have a look at the past bills to get a more accurate set of figures for all.

 

[MrNoo]

11kW array should be able to generate 15kWh most days through the winter, I would imagine. That's not much more than an hour a day of running at capacity, two and a bit hours at 50% etc.

Panel angle has a huge effect on output during winter.
If I was to do it again I would do a ground mount with and adjuster so I would be able to change the angle for winter months.
A friend has 9kw of the side of his shed to run his elec arga and it works exceptionally well when the sun is low

 

[Exfarmer]

Panel angle has a huge effect on output during winter.
If I was to do it again I would do a ground mount with and adjuster so I would be able to change the angle for winter months.
A friend has 9kw of the side of his shed to run his elec arga and it works exceptionally well when the sun is low

I have 8 kw on my house , which inspired me to go into the industry. These panels actually do very well in winter as the angle is very high. They do less well in summer as they are slow to start with the sunnbehind and early to finish too. They still average at the top of my arrays

 

[MrNoo]

I have 8 kw on my house , which inspired me to go into the industry. These panels actually do very well in winter as the angle is very high. They do less well in summer as they are slow to start with the sunnbehind and early to finish too. They still average at the top of my arrays

Yes, mine are great at this time of year, my batteries are fully charged by 9 in the morning (circa 5-7kw) but I would plan more for winter and should have done but the shed is a fixed angle so that's what I've got. But to be able to alter the angle would be a godsend in the winter months and I do believe I could run completely off grid with capacity to spare all year.