Solar Panels To Be Fitted On All New-Build Homes in England By 2027 (theguardian.com) 144
Almost all new homes in England will be fitted with solar panels during construction within two years, the UK government will announce after Keir Starmer rejected Tony Blair's criticism of net zero policies. From a report: Housebuilders will be legally required to install solar panels on the roofs of new properties by 2027 under the plans. The policy is estimated to add between $4,000 and $5,320 to building a home but homeowners would save more than $1,331 on their annual energy bills, according to the Times.
Labour has set a target of building 1.5m homes by the end of the parliament. The party has promised to decarbonise the electricity grid by 2030 and cut household energy bills by $400 a year.
Labour has set a target of building 1.5m homes by the end of the parliament. The party has promised to decarbonise the electricity grid by 2030 and cut household energy bills by $400 a year.
Now all England needs (Score:4, Insightful)
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Re:Now all England needs (Score:5, Interesting)
Adding a battery is relatively straight forward. I found it easier than installing central air conditioning (I'm in the US). Permits and cost were the big issue for me, and likely the same in the UK. Expect battery prices to go down significantly in the long term. So perhaps in 10 years, many of those homes will consider a battery as a worthwhile upgrade.
If. on the other hand, power companies put in their own battery systems and solar power is being bought from consumers at favorable rates, then there may be no need to install a whole house battery. I think that's probable in the UK, but maybe not for me in the US. So a wait-and-see approach makes sense before mandating whole house batteries with every solar installation.
Another problem it solved for me, that isn't likely a problem in the UK, is frequent power outages. The US really is like a third world country sometimes.
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Permit? As far as I know in the UK everything behind the main fuse is your own responsibility. They don't even need an inspection for sale by law.
In some ways the US is free, but in construction it seems red tape incarnate unless you live in bumfuck nowhere.
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Kinda but not exactly.
Certain works are notifiable, so it's not a complete free for all.
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Installing a shower (10kW ; separate 30A cable from a dedicated RCD breaker in the consumer unit) didn't need a permit the last 2 places I did it in. If there's a voltage limit, it's probably at 420 or 480V rms ; certainly not valid for regular mains voltages.
There may be new electrical
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You do need a permit to do hazardous work in the UK. High voltage, anything with a torch, etc.
So by that logic, the HV DC wiring for your PV array is not something that you can DIY in most countries.
Re: Now all England needs (Score:3)
You can DIY your wiring in the US. What you cannot DIY is the AC connection at the panel for islanding protection. The high voltage solar wiring requires earthing and a disconnect, NBD. Some states including California require professional solar installers to have a special certification.
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How How HV are these panels ? - given that 240v is Low voltage.
I thought each panel was individually wired to a controller
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Very simplified, they are usually connected in series to get a meaningful voltage to the controller to avoid high amperage situations and it allows the inverter and the BMS to work efficiently if the nominal voltage from the panels matches those of the batteries.
There is much more to it than that, sizing a panel and battery installation is very dependent on how it's supposed to be used.
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I don't know about you, but I'd consider that a design step. I'd expect the manufacturer to provide ready-made design examples in TFM, which I'd then R and then go and load up on ancillaries (JBs, conduit, appropriate weights and lengths of cable). Or I might have to get the design done by an electrical consultant, then follow his (or her) instructions.
If, of course, I had access to the roof. Which I don't.
Re: Now all England needs (Score:2)
In microinverter systems each panel has a controller/inverter and they use mains voltage to send power to the panel. Most home systems use DC for all panels to a single controller, which may or may not be converged with an inverter.
! million hands raised "homes too expensive" (Score:2)
Oddly, there's no coordination between this 'crisis' induced government mandate and the 'housing affordability reduces birthrate' demographic crisis from the other part of the government....
Re: Now all England needs (Score:2)
And still a lot of the building code in the US is lagging behind.
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To install a battery, you need space for the battery. Not clear how easy that is to come by in UK.
Re:Now all England needs (Score:4, Informative)
The whole house batteries are flatter than one of those narrow Japanese aircons. Mine are mounted on the exterior walls and fit completely under the eaves. They are very heavy but not very big.
The main limitation is they could not be placed near a bedroom (by my local safety code). I also was limited on battery technology because of county fire code, which wouldn't apply in the more urban parts of the UK. (I live in a flammable part of California)
The part I hate about my batteries is each has a 50 cm long strip of blue leds that act as the charge indicator. It fills my garden with eerie blue light. Luckily I can configure a schedule to turn off the meter, but sometimes I want to see it without using an app. I would have preferred a tiny display like my power meter has.
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Ah, that would be a problem. Out the back, the walls are occupied by the soil pipes from the 4 stories of apartments above. Out front, on the street, there is room, but the kitchen is at the back of the flat, and the bedroom at the street side.
But : that wall is 8 inches of stone (sandstone, ashlar laid some cross-bedded, some furious-bedded ; trust a geologist on this) which is fairly proof against flammability. Does material of the wall count?
Re: Now all England needs (Score:2)
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Inverters have had a control interface since 2016 by EU regulation. If mass produced, the UK could create control devices for a couple of quid to turn off inverters in regions where the power isn't wanted.
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Currently, people I know in the UK with new solar installs get hourly dynamic pricing. I think some even get five minutes pricing which can go negative. At that point they can (and do) simply switch off their panels which may be cheaper and more effective than installing batteries. If the price of installing alternative renewable energy sources that can match with gaps in UK solar is less than the price of installing batteries then simply switching off is a great solution.
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Yes, it is tremendously difficult to not deliver power when someone is charging you to do so.
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New construction only, said the summary. Then the project can plan for a neighborhood battery as well. Would be a help in reducing the load on the regional/national power grid. House battery installations are much more problematic in existing houses, new buildings can (and should) be designed with either their own in-house battery or a a much larger battery that takes care of the neighborhood.
Re:Now all England needs (Score:5, Informative)
Clearly you don't live here. We've hardly had any rain in 2 months in the east with wall to wall sunshine most days. Completely abnormal weather and yesterday the hottest start to may on record was recorded.
Re:Now all England needs is sun (Score:2)
So you for one welcome your Global Warming Overlords?
Are you worried about the Atlantic Meridional Overturning Circulation halting, by the way?
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What does that translate to in watts/square meter?
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28C around London. Shocking, but not surprising. This is literally what the climate models predicted, including the exaggerated heat island effect for large conurbations
Re: Now all England needs (Score:2)
29C in the UK on May 1st after very little rain is a Big Deal. We're not Arizona.
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How many hours of sun in the winter? The problem where I live is when I need power (winter) the days are short and usually heavily overcast.
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Quite a bit of the UK (North / Scotland more so, but everywhere to some extent) often gets sunny weather in winter. It's alternation between overcast, windy, even stormy and then a blocking high pressure which gives you some days of cold but sunny weather. It's much much nicer than August / September when you can get continual rain.
Re: Now all England needs (Score:5, Funny)
We've got The Sun, the newspaper. We'll burn it to generate heat on cloudy days.
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Not in Liverpool.
Oh, I don't know. If you give them the chance they'd probably happily burn it down completely.
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They'll be sticking those solar panels where the sun don't shine.
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And they're about to let Bill Gates and his new company start screwing around and make "cloudtrails" to block sunlight....
Funny thing is they don't (Score:2, Interesting)
Know what the UK needs is a functioning economy. 50 years of Thatcher style austerity for the working class and King Charles style opulence for the ruling class hasn't exactly done them any good.
I do wonder how they managed to sell austerity bullshit to their working class though. Here in America we just used moral panics and racism to spook everyone, what we call the southern stra
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The usual trick - the large majority of the media is owned by Blackshirts of one group or another.
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Good effort (Score:2)
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But if it's just panels and no batteries, it's half the job.
Solar panels alone are roughly 1-2% of the job.
Right now we still need panels and energy providers pay well for extra energy we produce during the day. As more people produce, the savings from selling will decline. Batteries that let you produce in the day, use at night and trade on the tariff differences are the game changer. Profit while giving the grid more stability.
ESS schemes suffer from similar sorts of diminishing returns. They'll get you further but not far enough with current technology for substantial decarbonization efforts to work. In the process total system costs will have pushed energy prices higher beyond what they need to be to have any real hope of convincing the rest of the energy consumers to shift to the grid in order to decarbonize.
This is terrible policy (Score:3)
Rooftop solar is amongst the most expensive and wasteful forms of production from intermittent renewables.
Take the same money spent on rooftops, invest it elsewhere and you could get literally twice the capacity with a higher capacity factor in a utility PV farm. Even better take that money and invest it in a large scale wind deployment for even greater value /w 8x reduction in carbon cost vs solar.
The opportunity costs of this policy are disastrous and further shows politicians are really not serious about perusing policies that would meaningfully impact climate change.
Re:This is terrible policy (Score:5, Interesting)
The UK has a pretty damn great program of investing in large scale wind and solar, although the Tories did their best to fuck it up completely.
But that’s about spending *public money*. This is about imposing a regulatory obligation on private house builders to put in solar. This is frankly pretty damn cheap for them to do given that the scaffolding is already going to be in place during the construction, and I think the ROI calculations probably look quite different from the norm when you consider this vs a solar farm, because the norm assumes retrofit. A panel is a panel, after all. There’s better and worse siting, sure, and there’s economies of scale with inverters, etc, but the panel output isn’t *that* much lower.
Obliging those builders to pay into a solar farm or similar would be possible but hard to explain and hard to sell as a policy. But obliging them to put some panels in while they’re already building is easy to explain and sell. It has a direct benefit to a home buyer that just isn’t there with a solar farm — a degree of energy independence, lower household bills, etc. I could be swayed by an argument that says forcing builders to get closer to passivhaus efficiencies is better than this. But that would be dramatically more expensive, so the pushback would be much greater.
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"I could be swayed by an argument that says forcing builders to get closer to passivhaus efficiencies is better than this. But that would be dramatically more expensive, so the pushback would be much greater."
Yet it's not. And the payoff is longer lasting.
2X6 walls allowing greater insulation, high efficiency lighting, heat pumps, ...
Incremental costs are quite low.
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Um, that’s a kinda tiny subset of what passivhaus requirements look like:
1. Ultra-Low Heating Demand
Annual heating and cooling demand must be 15 kWh/m/year.
Alternatively, the peak heating/cooling load must be 10 W/m.
2. Primary Energy Demand
Total primary energy use (heating, hot water, appliances) must be 60 kWh/m/year.
3. Airtightn
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You should look into 'earthships'. Invented by an "alternative" character, whom you probably will not like. However, his logic was and remains sound, Earthships consume about 40 to 40 USD per year on grid electricity. The rest these houses generate themselves. Which is pretty easy to do, since these houses do not need cooling in Summer or heating in winter (if orientation is correct).
And you will hardly spent on water too, if your municipality allows you to use filtered greywater as water to flush your toil
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Do you mean walls made of vertical 2in * 6in lumber, separating whatever brick/ block outer (weather) wall you have from the Gyproc inner surface, with a sheet of foamed plastic (or mineral wool fibre) insulation between the walls and the lumber verticals?
IIRC, you need special insurance for wooden exterior walls. They're high to insure, and most companies will just refuse to quote on them. No where near enough fire resistance. And pretty poor on the insulation and lifetime too. My apa
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But thatâ(TM)s about spending *public money*. This is about imposing a regulatory obligation on private house builders to put in solar.
I don't understand this argument. You can always levy a tax on new homes and use the proceeds to fund your wind farm. I personally would not support this policy but it makes infinitely more sense than a rooftop solar mandate.
This is frankly pretty damn cheap for them to do given that the scaffolding is already going to be in place during the construction, and I think the ROI calculations probably look quite different from the norm when you consider this vs a solar farm, because the norm assumes retrofit. A panel is a panel, after all. Thereâ(TM)s better and worse siting, sure, and thereâ(TM)s economies of scale with inverters, etc, but the panel output isnâ(TM)t *that* much lower.
It makes no difference. You still need a racking system and people to go on the roof to install and maintain it especially if per module power electronics are used whether or not the building is new. Higher string voltages and high voltage inverters can't be used, bifacial panels c
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The UK has no need to levy a tax on new homes, because we already pay for large scale solar via general taxation and a tax on energy bills. That thing you said about “needing a much bigger base” than merely builders to pay for scale deployment of renewables? We *already have that in the UK*. You need to go away and learn about the green levy, about CfDs, about Dogger Bank, about Mallard Pass, because without it you keep thinking the UK is like a little US, and it’s nothing like that.
And th
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The UK has no need to levy a tax on new homes, because we already pay for large scale solar via general taxation and a tax on energy bills. That thing you said about âoeneeding a much bigger baseâ than merely builders to pay for scale deployment of renewables? We *already have that in the UK*. You need to go away and learn about the green levy, about CfDs, about Dogger Bank, about Mallard Pass, because without it you keep thinking the UK is like a little US, and itâ(TM)s nothing like that.
And thatâ(TM)s broader than just UK energy policy. For example your comment about using cranes to install roof tiles. That just doesnâ(TM)t happen in the UK. Scaffolding is used instead. Itâ(TM)s a different market, with different conditions. You need to stop assuming that the way things work in the US is true in other countries, itâ(TM)s just wrong. The other stuff about fire risk etc is just as wrong given the UKâ(TM)s different market conditions. You just make yourself silly when you try to school me on something like the use of scaffolding in the UK.
The particulars of the UK because are irrelevant to the issue at hand. If you have credible objective evidence the cost of installing rooftop PV on a new home during construction is on par with utility scale PV that that information would be most welcomed. Until then I will presume "scaffolding" is throwing shit on the wall and hoping something sticks.
This US-centric perspective and lack of understanding of the UK is pervasive. You have conflated âoea degree of energy independenceâ with *complete* energy independence in terms of a US-centric perspective about protection from brownouts and blackouts, and then argued against that straw man. A degree of energy independence in the UK has nothing to do with protection against supply interruptions, something that is much more rare in the UK than the US. Instead, it means that households with solar have lower grid energy bills than households that donâ(TM)t, so that when prices for energy rise sharply, as happened several times in the UK in the past few years, householders are somewhat insulated from the full effects of that rise.
This doesn't make logical sense either. If you spent those same funds on utility PV or large scale wind your country would have a higher degree of "energy
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"invest it in a large scale wind deployment"
the UK already has over 30GW of wind energy, split about evenly between onshore & off.
i have some reservations about this policy but one significant advantage of rooftop solar is that you don't need to build out the transmission network & you're tied into the existing distribution.
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the UK already has over 30GW of wind energy, split about evenly between onshore & off.
Are you saying there is no more wind to be build or there is already enough wind? What does this statement mean?
i have some reservations about this policy but one significant advantage of rooftop solar is that you don't need to build out the transmission network & you're tied into the existing distribution.
Of course you have to build out the transmission network because demand is not always based on whether or not the sun is shining.
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Are you saying there is no more wind to be build or there is already enough wind? What does this statement mean?
The UK is beginning to get to the stage where it produces more wind power than it's own needs. Wind is more or less limited by the transmission network. Wind also tends not to match as well as solar with air conditioning loads that are becoming more important in the UK as global warming increase temperatures, so you need to build more, more widely distributed wind to support that reliably.
Of course you have to build out the transmission network because demand is not always based on whether or not the sun is shining.
The transmission network is difficult to extend because you have to do it over land, which is expensive in the UK, becau
Re:This is terrible policy (Score:5, Insightful)
Rooftop solar is amongst the most expensive and wasteful forms of production from intermittent renewables.
Even if that's true, it has the distinct advantage of being the least intrusive. It doesn't require any real estate or have any environmental impacts that needed to be investigated and permitted. It's low hanging fruit.
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Even if that's true, it has the distinct advantage of being the least intrusive.
Rooftop solar is intrusive to re-roofing and roof repair. It is intrusive to firefighters. It is intrusive with rooftop access to replace panels and per panel power electronics. Rooftop is expensive to maintain and dangerous with over a hundred solar related rooftop fall deaths in the US alone occurring yearly.
Do people care about addressing climate change or is it just about virtue signaling while rearranging deck chairs on sinking ships? Yes we know if we invest these here limited funds in this other
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Re-roofing will indeed be harder, I'll grant you that. But with the way roofs are build in the EU, I can tell you that re-roofing was hardly necessary. I have lived in 50 year old houses that still had their original roof, that was not leaking or damaged in any other way. Sure, some tiles on top of the roof were replaced in that time from storm damage.
Adding solar to the roof, will increase weight, which isn't great. Yet I think that these panels will prevent a lot of external damage, making it last even lo
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So you want to force every future owner of a house, to pay an "invest into renewables elsewhere tax", which you collect somehow, take care of it and invest into "cheaper" projects with a higher CF etc. ???
And you think the future homeowners are happy to give someone 3k or 4k money they never see anything from again?
This scheme here is: forcing home owners to put solar on THEIR OWN ROOF.
Who the funk cares if it is money wise more effective to collect 4 billion and build 7 wind farms from it?
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So you want to force every future owner of a house, to pay an "invest into renewables elsewhere tax", which you collect somehow, take care of it and invest into "cheaper" projects with a higher CF etc. ???
No I don't support this. I was merely offering a better policy under the stipulation the government was forcing builders to fight climate change on everyone else's behalf.
I don't support taxing builders in the name of fighting climate change. If you as a society decide to fight climate change then any taxation aimed to building out infrastructure to reduce carbon emissions should have a much broader tax base than builders. I would also hope that being excellent stewards of other peoples money the governm
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Ground mounted Wind? Now that is throwing away good money. Wind mills are pretty bad in urban areas. Wind mills are very bad if these are not placed high enough. Wind installations also tend to make lots of noise, so if you have neighbors, they will not appreciate your windmill. Also, the quality of windmills for consumers is quite bad too. Expect to spend lots on maintenance, while getting only very little energy out of it. Windmills with blades of 50 meters and 100+ meters high, yeah, those are of suffici
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Rooftop solar is amongst the most expensive and wasteful forms of production from intermittent renewables.
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If you are going to quote content from publications like the Center of the American Experiment's "How to destroy the myth of cheap wind and solar" you should give them credit so we know where this tripe comes from:
The statements I made regarding the price differences between rooftop vs utility PV is well known and in no way controversial.
https://www.iea.org/reports/pr... [iea.org]
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Due to the indicated differences in input values also the LCOE of different electricity generation technologies vary significantly depending on the country, the technology and the properties of individual plants. It is thus not meaningful to point out a single power plant type, which would outcompete the others in terms of average costs. This is in particular true for renewable technologies, especially wind turbines and photovoltaics, whose costs are very much location dependent. Therefore, they are frequently tailored to individual requirements: not only are PV installations differing in size, from household rooftop installation and floating panels to utility scale open space PV installations, but also wind turbines range from being installed in small-scale individual units to large wind farms. The same holds true for hydro units, being connected to small streams or large rivers, in the form of run of river or reservoir. Figure 3.4 illustrates this range of technological options for generating electricity and associated costs.
The referred to chart shows that rooftop solar has an LCOE 50% higher than offshore wind, but that does not make it wasteful by any means. A home owner takes out a long term loan on a principal for which they come out ahead in just 3 years. They are being forced to invest in something that gives excellent long-term returns and it costs them less tha
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Take the same money spent on rooftops, invest it elsewhere and you could get literally twice the capacity with a higher capacity factor in a utility PV farm.
I don't own a PV solar farm, but my home does have a roof I can put solar panels on.
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Which is precisely why the fact of the regulation change is being announced several years before the implementation of the change. So that projects currently on the drawing board can have the drawing, buying lists, and construction sequences modified appropriately before the ground is even broken.
Re: This is terrible policy (Score:2)
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It's a singular individual re-outbreak of measles 50 years after the initial infection. Apparently, America is facing a future shortage of shingles, so they're launching a mass-infection campaign to secure their supply of shingles into the second half of the century.
I think they flay the "shingles" from the faces of the infected, discard the bodies, and then nail the flayed poor people to their roofs. Must stink in the Sun - but we have to respect the weird cultural practices of those we t
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If it's taken into account during the design of the house, you don't use a roofing system which doesn't play nice with mounting ... so don't assume asphalt shingles.
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Asphalt shingles in UK?
Broken warranty because you install solar on the roof? In a civilized country?
I mean, UK is pretty backyard now with all that destruction the Torries did the last 40 years or so ... but I doubt they are at the level of Asphalt shingles now.
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*and* when Americans assume that other countries are just like America. As the other poster said, the UK has mainly tiled roofs, and some slate. Not shingle!
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It’s classic Dunning-Kruger. Like imagining that contact lenses couldn’t work by theorising as a layperson that they’ll get stuck to the cornea or that the body will reject them etc.
What for? (Score:2)
Have any of these people ever been to England?
...laura
Blair? (Score:2)
What does that asshole want? Does he think they need to spend the money on a war with Iran instead?
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Mostly consulting contracts, it seems.
will they be forced into some contract? (Score:2)
will they be forced into some contract?
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Probably just get a line charge or connection fee to the grid. California CPUC (california public utility commission) keeps pushing for this and it will be the nail in the coffin for new solar sign ups. As it is, we've destroyed any real incentive for solar with horrible pricing for the electricity produced. We call it netmetering 2.0 here and it doubled the time to break even on your solar.
This will only get worse as more solar comes online. California also has the new construction requires solar panels ru
or (Score:2)
Or maybe they can find a way to make energy from rain?
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No silly. Separate the hydrogen from the oxygen in the water. Recombine them in a hydrogen fuel cell to create electricity and water. Separate the hydrogen and oxygen from that water. Recombine. Separate. Recombine. You now have a perpetual energy machine. You're welcome.
"Here comes the sun..." (Score:2)
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My previous solar installation I opted for panels that each had their own inverter. It cost a bit more but then the worry of a single failed inverter doesn't take out your entire array, just the panel it was attached to.
"add between $4,000 and $5,320 to building a home" (Score:3)
That's amazingly cheap. Well worth the expense.
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The continuing extraordinary falls in the costs of solar are why much less wealthy countries than the UK, such as South Africa and Pakistan, are seeing private installs of solar at a fast enough rate to truly change the entire energy generation systems of those nations. This is only going to ratchet up, especially because solar is feasible for a home install, which isn’t true for wind, really.
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The interesting thing (no pun intended) is that a change in interest rates will change the price of a house by far more than this, and it never makes the news. Even a one percent difference in mortgage rates can easily make a 30k+ difference in total payments over the life a mortgage.
Don't know about the UK, but here in the US, 5k is nothing on the price of a new house. It's the difference between "builder grade" and "stainless premium" appliances - and if you want kitchen upgrades, you're easily spend
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" save more than $1,331 on their annual energy bills", you got to wonder if thats true.
Oh goody. (Score:2)
All new homes in the UK will have solar panels installed on their roofs but not connected to anything. That makes perfect sense...
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If you are losing a significant amount of heat through your roof on a new construction home then the builder probably did not insulate properly up there. New homes with modern insulation are very good.
Same if your solar panels are leaking they were not installed properly, this isn't a new problem.
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Insulation solves that. Modern houses have decent insulation now. That's law too.
However, their power bills will also not go down either. The electricity suppliers will increase line charge prices to compensate. The monthly line charges keeps climbing irrespective of unit generating pricing.
Re: How much will heating costs go up? (Score:2)
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Solar panels are typically sold with 25-30 year warranties. They degrade on average .1% per year for the first 20 years.
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Modern homes are insulated all to hell, there is no natural ventilation through the roof and the insulation is now better than for other parts of the exterior. It has fuck all heat flux. No one is building throw back open eaves homes in the UK.
Re:How much will heating costs go up? (Score:4, Informative)
So confidently wrong about everything.
1. Incandescent bulbs is about as madly expensive a way of heating a space as you can possibly imagine. The costs of the extra heating required are massively outweighed by the savings in terms of power.
2. Solar panels deteriorate very slowly. This is a non-issue for at least a decade, more likely 3 decades
3. UK has tiled roofs. They are more than capable of having holes drilled in them without leaks. This is a complete non-issue
Re: How much will heating costs go up? (Score:4, Informative)
Panels over your roof are a win win when it comes to heating and cooling impact. In the summer they absorb the light before it hits your roof, and the back sides of the panels are white and the tops are dark, so they radiate most of that energy back into space - meaning your house stays cooler. In the winter, when you are trying to keep your house warm at night, the white backs of the panels reflect radiated infrared back to your roof and help you stay warm.
The effect is exactly the opposite of what you think it is.
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I'd much rather heat my home with my furnance than with incandencent light blubs. In fact, I'd much rather the sun not heat my home most of the summer. My home is so well insulated that in the winter this is a non-issue.
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If the numbers in the summary are correct, the system pays for itself in five years. Maybe six or seven if the estimates are optimistic and the builder adds a profit margin to the added cost. Still the total cost of ownership for the home goes down. Yes, you pay a little more in monthly mortgage payments, but you pay less in electric bills, so the overall expense is lower. Banks will need to take that into account in determining whether people qualify for a mortgage, but assuming they do, this should ma
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My roof was put on in 2008 (asphalt shingles). When it's time for a new one I plan to put a metal roof on with solar and battery backup. I plan to live here until I die and the value of having some insulation against power outages and reduced spend in electricity is a no-brainer.
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I don’t know what world you live in, but batteries in the UK do not cost forty thousand dollars. Today, they cost between 5 and 7k gbp, ie 7 to 9k USD. In a couple of years, they’ll be that much cheaper, because the prices have fallen consistently each year for years. So you’re out by at least a factor of four on the costs.
As for lasting just 10 years, this is obvious bullshit you’re feeding yourself. EV batteries are seeing typical state of health of about 90% by year 8, and home st