Do Solar Panels Work in the Rain? One Cloudy Day!
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- Опубликовано: 23 сен 2024
- In this video I take an awful grey and rainy day in August and see how much electricity my solar panels produce during the day and if my charged GivEnergy battery will last all day long.
Nice video, thank you for the update
No problem, thanks for the comment
Now this is my kind of video. Thank you ever so much for making this one. We’re getting our PV and battery system soon, and you’ve set my mind at ease to know what to expect. All the predicted production graphs are all very well and good, but it’s far better to see someone’s actual real life experiences and results.
Thanks for the comment, glad it helped
Excellent video. It demonstrates how useless solar is on certain days. The only option then is a battery and then a means of charging the battery. I do think moving forward, the reliability of the grid may come into question. You've only got to look at the demise of the road system in the UK to realise that if the infrastructure of the grid is similar (we are served by a sub-station that was built in the 1930s), there is an immense amount of upgrading needing to take place before any 'greener future' is achieved.
Solar is useless on certain days in the UK, and yes, a battery is then the only way, but only if you can fill it with cheap rate electric overnight, which also seems to be getting a lot more expensive.
AWESOME AWESOME video. Im new here. I Just subscribed. Wow!! You have lots of video. Did you install your 5.4kw solar system via DIY.
No, it was performed by an MCS accredited company.
It sounds like you should maybe double up on battery capacity. Ideally, you should have enough battery capacity to get you 24 hours of back up on your most demanding days, without any other source of power. That will help minimize daily depth of discharge, which will prolong the life of the battery bank, as well as give some reserve should the same storm that knocks out grid power is the storm that dumps 30 centimeters of snow on the panels! Do you have a back-up generator that can charge batteries, as well as power your home during a prolonged outage?
We have a 16K ground mount grid tied system. It is facing SE as on the west the land rises higher than the house and has 80 foot trees. As a result even on sunny days the system is in shade by 3P here in upstate NY USA in October. On a rainy day in October it produced 10.6kWh by contrast on a totally sunny day in late September the total is 86.4kWh.
That sounds a really nice system. If only our UK gardens were a lot bigger I might try ground mounted as well.
Hi Daniel, this is very interesting as i am getting a similiar set up to you installed in November. It would be great to also see the same graphs and data for a good day in June/July (unless you already have done this and i couldnt find it !)
That's one i'd like to see also
with 4kw facing south and around 28 degrees angle on roof I get 300-400 on overcast days for about 4 hours in the winter so cheap overnight is a must with a battery bank of between 15 - 20 kwh. You can buy 5kwh batteries for about 1100-1200 direct from china or 1600-1700 from cheaper suppliers in the uk although in both cases its a lengthy wait.
I think the 5kW Givenergy battery is still £2400 Inc 20% VAT.
'You can buy 5kwh batteries for about 1100-1200 direct from china'. Do you not have to pay import duty on those?
@@fredflintstone1428 I got the numbers from batteries I looked at on aliexpress so its possible although I've bought other electronics direct for a few hundred quid from aliexpress and no import duty. To clarify I bought my batteries from a UK supplier.
Thanks for these vids. Im seriously considering Solar PVs and battery especially as the Gov habe now announced the Energy Price Guarantee will end after April for all except the benefit grifters. These will help me make a decision although I feel 75% there.
Great you won't regret it
Hi Daniel, I switched to Octopus today and used your referal code.
Great channel, greetings from Wales.
Hey thank you very much.
Hi if you set your dish washer and washing machine to run on off peak that's about 4kw saved and set the battery to charge only during the off peak hours surely this will then last you as the battery only has to support your needs for 20 hours a day
Exactly what I do Paul. 6k pv and 8.2kwh battery. Here in Lincolnshire (UK) its been chronic.
Dark overcast days, little generation, but have pretty much been topping up battery 100% for (currently) 7.5p per kwh. With standing charge, typically costing about £1.50 daily.
@@stuartburns8657 i am having a 7.6 kw array and give engery 9.5kw and a eddie fitted in February looking forward to this. Im on the standard Octapuss tariff now i will change to the off peak then my average useage a day is anywhere between 6 & 15kw/h although most days are 10 to 12 KW/H so with a little solor and opp peak use of the already mentioned I am hoping this battery should last untill the of peak time slot
@@paguk2000 Brilliant.
I'd started getting quotes and the end selection process, and paid the deposit in April. Took until mid Sept due to shortages.
The 9.5kwh was beginning to replace the 8 2kwh model I was going for, but they where like hens teeth availability wise lol.
Still, you'll benefit from the 3600W max output, as opposed to our 2600w.
Still manageable, but a pain sometimes if you don't want to spill over to grid usage.
@@paguk2000 think you should be fine if you topup to 100% during the lean lv months, and are sensible with your greedy applications like you've mention.
Our base load 220w, so quite modest, and we typically go to bed with 15-20%.
Detached 4 bed house, 4 of us, including one child who's always using a power hungry desktop lc!
Yes we have run the washing machine and dishwasher now and again overnight when I know the weather is going to be really bad the next day. So far the battery is mainly coping, but the odd day we have run out at say 10.30pm - but the extra cost until 00:30 when we re-fill is so low I can see that it's going to be worth shelling out £2.5k for another 5kW battery, as it just won't pay for itself in 10 years unless the electric prices more than double. But I need to wait to see what the full winter brings first and do the maths.
Great vid 👍 confused as to why you have 2 inverters? I know the Givenergy one is for the battery but why not just one?
I wanted the solaredge for its 25 year warranty, you only get 10 on the GivEnergy one. Plus I wanted optimisers on the solaredge inverter so I could see the state of each panel. But yes I could have gone hybrid and saved some money. Also throughput can be higher with both inverters working at the same time.
Another great video Daniel, I have a 3.3kw battery which obviously isn't enough, is possible to add more battery storage to the existing set up?
Mostly it's straightforward, if you can get hold of extra batteries at the moment due to demand. Plus you'll have to pay 20% VAT on the battery if its not part of a panel install.
The other thing I'm using in winter is a tumble dryer . This will probably mean drawing more from grid at night.. had my solar only couple months and trying to work out best strategy for winter months
Not always going to work but if you can be flexible with wash day then wait for a day with more sun to do wash and tumble dry then.
Yes I try and tell my wife no washing today, but you can do it tomorrow when it's sunny. We haven't yet had to run the washing machine overnight yet
Nice video mate
Thanks for the visit
So if someone wants to go completely off grid they would need a backup generator.
The givenergy inverters do allow you to add an EPS but it's costly to run that back through the main consumer unit, most people just add a double socket from it, but you can only run a couple of items like a fridge freezer of the electric goes off. I believe the latest givenergy all in one systems may do what you want.
Yes, unless you have enough room for a very sizable solar array system, plus a lot of battery bank capability. I live in an off-grid community, and my solar arrays total a tad over 7KW, and my battery bank totals a bit over 27KWh. However, I am used to "budgeting" my power, so have mostly low energy-usage appliances, and know when I can and cannot use them. I also don't have to worry very much about totally cloudy days here in the southern California desert. The longest my batteries have had to carry the load was about 8 days in a row, and my system worked great...but I did get kinda worried and ran a generator for a few hours the last day, as my system was down to a tad less than 35% capacity. I probably could have rode out that last night okay, though.
If I could afford it, I have room on my solar controllers for almost another 5KW of solar panels. THAT would almost guarantee that I could last up to ten days of mostly cloudy skies before I had to use a generator, with my system.
I have 5 watt solar panel and I get nothing on overcast day
LOL! That is TINY, for a solar system! I have around 7KW of solar panels, and have seen at least a few hundred Watts going into my batteries on a very cloudy day.
Hello Daniel Coe! Do you have ATS switch in your solar and is it necessary here in Uk? Thank you
You do not need an ATS unless you want to feed into the main cct when grid power is off. If you do one is required.
How are you only paying 7.5p at night? I’m in octo flexible economy 7 41p day and 15.6p night
Standard Octopus Go rates.
@@daniel_coe you can only get that if you have an electric car right?
Is your graph showing battery charged in about 2 hours? Would it be better to charge nearer the 4am time? Would you be using battery from 2am?
The excel graph seems to suggest battery was kept topped up until around 4am.
I suppose I just start it at 00:30 then it just keeps it topped up until 04:30 which is the window I have given it. I don't think it would make too much difference.