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Energy prices - gone nuts.

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We fill the battery first and then the excess energy heats our water but we don’t quite fill the battery today as it takes 13.5kWh. Close but not close enough.
Cheaper to fill the battery and use that on the house and use gas for water heating. But I hope in the coming week we will see by both get used
 
What setup do you have that it knows to fill battery first before diverting to the hot water?

Does the inverter take care of filling battery / then exporting to grid, and then you get those Immersion diverter kits which only kick in if they detect energy being exported to the grid.
 
Calimori said:
The value of having battery storage.
Running on solar and off grid at 09:00
Generated 16.4kWh (clear sky sunny day)
Used 4.1kWh until sun went down
Put the remaining 12.3kWh in the battery
0kWh sold to the grid for 5p
Now running off battery and should get to 9am when the solar should take over again.
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I'm interested in the long term costs of this. Seems like a Tesla battery is £8500? and rated for 5500 cycles? And then obviously the cost of the solar panels etc. I'm curious if this actually does save any money or not?
 
russdx1 said:
What setup do you have that it knows to fill battery first before diverting to the hot water?

Does the inverter take care of filling battery / then exporting to grid, and then you get those Immersion diverter kits which only kick in if they detect energy being exported to the grid.
Click to expand...

On mine the solar diverter for the immersion has a min/max export amount that means it won't divert anything into the immersion heater until it sees at least 200w being exported and will then only divert anything over that 200w threshold into the immersion, whereas the battery storage has a 0w limit so as soon as it sees export it will start diverting into the battery.

This is fixed on my device but other devices likely work to different limits. I did see one DIY setup where they ran the immersion heater power cable through the current clamp for the battery storage so that if the solar diverter was diverting excess power to the immersion the battery storage would see that as exported power and start putting power into the battery, and that worked to prioritise excess power into the battery first, tokk a while to get my head around how it worked.
 
Rob zombie said:
I'm interested in the long term costs of this. Seems like a Tesla battery is £8500? and rated for 5500 cycles? And then obviously the cost of the solar panels etc. I'm curious if this actually does save any money or not?
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As with most things I suppose it depends how you use it.

But if you could generate enough solar power to fill it every day and also empty it every day that would add up to about 66,825KWh over the 5500 cycles at 90% depth of discharge, at the 1st April rate of 27p per kwh that would give a saving of about £18,000 and that's assuming that the price per kwh doesn't go up over the 15 year life cycle.

Also I'm not sure what the 5500 life cycle refers to, its likely that the battery would still work after that but at a reduced capacity so still usable.
 
Fantazia2 said:
As with most things I suppose it depends how you use it.

But if you could generate enough solar power to fill it every day and also empty it every day that would add up to about 66,825KWh over the 5500 cycles at 90% depth of discharge, at the 1st April rate of 27p per kwh that would give a saving of about £18,000 and that's assuming that the price per kwh doesn't go up over the 15 year life cycle.

Also I'm not sure what the 5500 life cycle refers to, its likely that the battery would still work after that but at a reduced capacity so still usable.
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Yeah I don't really understand the 5500 cycles either. My maths isn't great but that sounds like a 15yr life cycle? Obviously nobody has tested one for 15yrs so who knows if it will or won't? So that £18k saving is over 15 years?

Edit: oh I missed the bit where you said 15years
 
Fantazia2 said:
Also I'm not sure what the 5500 life cycle refers to, its likely that the battery would still work after that but at a reduced capacity so still usable.
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Probably something like "after 5500 cycles the battery should still be able to hold at least xx% of its nominal capacity".

Keep in mind that the "type" of cycles (partial, full, high/low dis-/charge rate) will also affect the internal chemistry. Basically the more you use it the less you will get out of it!
 
Kenny Taylor said:
I’m not at all on the band wagon of electric cars!

Great idea for city driving but no use if you
plan on going any sort of distance.
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I have one, don’t really do any great amount of city driving but I do lots of longer distance, it’s absolutely superb! Would not go back to a dinosaur juice powered daily car.

Do your homework! If you want to travel any reasonable distance (not uncommon for me to do 500+ miles in a day) then buy one that is supported with its own charging infrastructure. Otherwise it would be like buying a pin when you don’t have any electric sockets in your house!

Chris.
 
Until you can do 500+ miles on a single charge or around 300 but charging to full takes 5 minutes, I can’t see us considering it for our main car, it’s just not practical. Hubby often does a 450 mile round trip in a day only stopping at his destination.

I just got a new Jazz, it’s a self charging hybrid, that’s about as far as I’m willing to go on the electric car scale until range, charging time and infrastructure improves and it wasnt the fact it’s a hybrid that I chose it over similar cars.

I’m not against electric cars, I just think at the moment those things need to improve for them to be practical for a lot of people
 
The infrastructure is not in place here apart from charging points at a few supermarkets and shopping centres. However I very rarely got to these places. I live in a rural area where you need 4 wheel drive too..
As I said I had lithium hybrid Honda for a while when the first came out and the battery life was reducing all the time on it and tbh I was going to pay thousands to replace it..
 
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taz turbo said:
Do your homework! If you want to travel any reasonable distance (not uncommon for me to do 500+ miles in a day) then buy one that is supported with its own charging infrastructure. Otherwise it would be like buying a pin when you don’t have any electric sockets in your house!
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Tesla really do have an enormous lead over the competition, but I wouldn’t discount the other brands just because they don’t have the same level of integration. I’ve needed to use public charging, so I don’t miss it. But if I did I’d probably stick with Instavolt or Gridserve, or even the Tesla SuC’s when they open them all up after the current pilots in Europe. There’s a lot of slower and unreliable chargers out there which really do need better regulation.
 
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My solar panels and inverter were slightly cheaper than the power wall. Solar will be based on number of panels and ease of installation. However, scaffold is required and you might need a separate quote for that.

Tesla dropped the cycles from the warranty and now just say 10 years. It is unlikely to be a brick in 10 years, so will still be usable. I also expect the technology to improve and get cheaper so in >10 years I hope to pay less for greater storage.
There is more to this than pure cost payback.
But I could be cost even in under 10 years based on April 1st price cap figure. Less if they continue to rise. I have hedged against that, reduced my stress, made the house more resilient and protected against grid outages.
 
I will say we’ve had grid outages up here which would have really put us up shat creek if we only had an electric car!

Solar panels on the other hand is interesting however with the amount of storms we’ve had I’d fear the roof blowing off!
 
I am a petrol head but I can see the future is electric. This is like the point horse and carts were replaced by petrol vehicles, it is happening fast. The infrastructure need to catch up but it shouldn’t put off the people who can switch.

My panels are integral to the roof structure. They act as giant roof tiles, secured in massive trays that are attached to the roof trusses. I would expect clay tiles to move before those panels do.
 
Kenny Taylor said:
Solar panels on the other hand is interesting however with the amount of storms we’ve had I’d fear the roof blowing off!
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Add a home battery to that for support through any grid outages Kenny.

Have roof mounted panels 8 years now and no issues.

You can mount panels on the ground too, maybe a better option if south facing real estate is limited.
 
From what I understand is the battery cycles refers to a full charge / empty? Ie if you just discharge it a bit then top up again that does not really count as a cycle, so not every evening would count as a full cycle just depends how much you discharge it each evening etc.. probably how they get the longer life spans out of it.
 
Monkeyboypaul said:
russdx1 said:
From what I understand is the battery cycles refers to a full charge / empty? Ie if you just discharge it a bit then top up again that does not really count as a cycle, so not every evening would count as a full cycle just depends how much you discharge it each evening etc.. probably how they get the longer life spans out of it.
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Been looking into this as might fit a system myself, much cheaper than getting a firm in.
www.zerohomebills.com

PylonTech US2000B Plus 2.4 KWH Li-Ion Battery Module 48V

Wholesale solar distributors and resellers for Pylontech lithium ion solar battery modules, systems and components for wind and sun projects. 2.4kW and 3.5kW low voltage and 2.4 high voltage grid-tie solar battery systems, 48V and 400V off-grid energy storage systems at best price. Ready to go...
www.zerohomebills.com www.zerohomebills.com
 
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M4carp said:
Been looking into this as might fit a system myself, much cheaper than getting a firm in.
www.zerohomebills.com

PylonTech US2000B Plus 2.4 KWH Li-Ion Battery Module 48V

Wholesale solar distributors and resellers for Pylontech lithium ion solar battery modules, systems and components for wind and sun projects. 2.4kW and 3.5kW low voltage and 2.4 high voltage grid-tie solar battery systems, 48V and 400V off-grid energy storage systems at best price. Ready to go...
www.zerohomebills.com www.zerohomebills.com
Click to expand...
If you can buy and install all the **** your self you would save a **** ton :) sadly I have no time or skills to pull it off :( and I hate heights so good luck getting me up some scaffolding haha :)
 
Just turned the new NEFF oven on for a roast as all the family coming over and it’s not working, that saved some energy😂
Last one went for 18 years and conked out a few days before Xmas luckily, that’s what I get for not going top of the range this time😭
 
Hold it, the oven is working now. Dinner back on😂
Think it must have a dodgy controller as I was messing with it and got the interior light flickering and a few more turns and it was coming back to life.
Game on🥳
 
Kenny Taylor said:
The infrastructure is not in place here apart from charging points at a few supermarkets and shopping centres. However I very rarely got to these places. I live in a rural area where you need 4 wheel drive too..
As I said I had lithium hybrid Honda for a while when the first came out and the battery life was reducing all the time on it and tbh I was going to pay thousands to replace it..
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Don’t think of the supermarkets as infrastructure, there typically very low charge rates, so plugged in for an hour you’ll gain about 20 miles range, just crap really, other chargers are now up to 350kW, which is huge, 200+ miles range added in 15 minutes.

But where about are you in the country? I don’t use chargers near to my house, why would I, it’s cheaper to charge at home and with a 90% charged battery in real distance is ITRO 300 miles, so no real need for a public charger on my doorstep.

Battery life will reduce over the life of the vehicle, but many manufacturers are giving warranties, I have 8 years unlimited mileage, so if the battery capacity drops below 70% then a new one will be fitted under said warranty.


Monkeyboypaul said:
Tesla really do have an enormous lead over the competition, but I wouldn’t discount the other brands just because they don’t have the same level of integration. I’ve needed to use public charging, so I don’t miss it. But if I did I’d probably stick with Instavolt or Gridserve, or even the Tesla SuC’s when they open them all up after the current pilots in Europe. There’s a lot of slower and unreliable chargers out there which really do need better regulation.
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I certainly wouldn’t discount the non Tesla charging stations, some are really good and are only getting better.

The Supercharger pilot in the Netherlands was originally 10 charging locations, and has now been rolled out to the rest of the country, but no other countries yet (all to the best of my knowledge)

Chris.
 
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