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The folly of the EV - Random

True or false?

www.msn.com/en-gb/cars/news/are-electric-cars-the-...k

The folly of the EV - Terry W

Skewed!

The transition from ICE to EV is a 30 year "project" - it won't be until ~2045 that ICE will have largely disappeared from UK roads. We are currently 5-7 years in - early days.

The link would be written very differently if the author (a) looked to the future rather than today, and (b) placed some weight on the negatives associated with fossil fuel consumption.

The folly of the EV - Manatee

Implicit in the government's pushing of EVs and electric heating is a presumption that all the required electricity can be supplied, and that it can all be renewable. It is at least arguable that that is unrealistic.

The folly of the EV - RT

Implicit in the government's pushing of EVs and electric heating is a presumption that all the required electricity can be supplied, and that it can all be renewable. It is at least arguable that that is unrealistic.

There's no assumption, or requirement, that 100% electricity has to be renewable - if we achieve a high % renewable then we can start to reverse the damage being done to the planet.

The folly of the EV - Manatee

There's no assumption, or requirement, that 100% electricity has to be renewable - if we achieve a high % renewable then we can start to reverse the damage being done to the planet.

Wrong, the PM says that the target is for all UK electricity to be renewable by 2035.

Edited by Manatee on 10/02/2022 at 09:45

The folly of the EV - Andrew-T

<< the PM says that the target is for all UK electricity to be renewable by 2035. >>

The PM says all kinds of things, but he has forgotten many of them a few weeks later.

The folly of the EV - Engineer Andy

<< the PM says that the target is for all UK electricity to be renewable by 2035. >>

The PM says all kinds of things, but he has forgotten many of them a few weeks later.

I thought that was Joe Biden, and the next day. :-)

With Boris, it take a year or two for the fuzzy memory to kick in. Especially regarding parties.

As regards the 'green' electricity, many of those technologies are far from green, because they require lots of mined (and often only in a few places in the world, which might lead to conflict) and heavily processed materials, some of which are toxic and/or extremely hard (including use of highly energy-intensive methods) to recycle or safely dispose of.

As yet, the most touted (electricity production) ones also are not conducive to producing electricty when it is most needed because they rely on sunlight or the wind blowing consistently and steadily, which they don't (here) in winter and a good portion of late autumn and early spring.

Some way still to go before genuinely green tech is available and affordable. My guess is a minimum of 30 years, possibly quite a bit more.

The folly of the EV - Andrew-T

The PM says all kinds of things, but he has forgotten many of them a few weeks later.

I thought that was Joe Biden, and the next day. :-)

Joe has a much better excuse than Boris ....

The folly of the EV - Engineer Andy

The PM says all kinds of things, but he has forgotten many of them a few weeks later.

I thought that was Joe Biden, and the next day. :-)

Joe has a much better excuse than Boris ....

He personally might have, but his a'ffliction' was already known, so he should've declined being put forward for his current job, but that's an argument for another time.

The folly of the EV - focussed

Implicit in the government's pushing of EVs and electric heating is a presumption that all the required electricity can be supplied, and that it can all be renewable. It is at least arguable that that is unrealistic.

There's no assumption, or requirement, that 100% electricity has to be renewable - if we achieve a high % renewable then we can start to reverse the damage being done to the planet.

The idea that we can manage climate predictably by adjusting, minimally, our output of some politically-selected gases is both naive and dangerous.

The truth is the opposite. In a system as complex and chaotic as climate, such an action may even trigger unexpected consequences. It is vital to remember that, for a coupled, non-linear system, not doing something (i.e., not emitting gases) is as unpredictable as doing something (i.e., emitting gases). Even if we closed down every factory in the world, crushed every car and aeroplane, turned off all energy production, and threw 4 billion people worldwide out of work, climate would still change, and often dramatically.

Prof Philip Stott

The folly of the EV - Engineer Andy

Implicit in the government's pushing of EVs and electric heating is a presumption that all the required electricity can be supplied, and that it can all be renewable. It is at least arguable that that is unrealistic.

There's no assumption, or requirement, that 100% electricity has to be renewable - if we achieve a high % renewable then we can start to reverse the damage being done to the planet.

The idea that we can manage climate predictably by adjusting, minimally, our output of some politically-selected gases is both naive and dangerous.

The truth is the opposite. In a system as complex and chaotic as climate, such an action may even trigger unexpected consequences. It is vital to remember that, for a coupled, non-linear system, not doing something (i.e., not emitting gases) is as unpredictable as doing something (i.e., emitting gases). Even if we closed down every factory in the world, crushed every car and aeroplane, turned off all energy production, and threw 4 billion people worldwide out of work, climate would still change, and often dramatically.

Prof Philip Stott

Indeed - the law of unintended consequences, as we are now seeing in stark detail as regards the numerous and severe negative effects of the pandemic lockdowns. All too often, changes in governmental policies, especially on the scale being touted on the subject of climate change and related issues, is poorly thought through as a 'reactionary' set of measures.

I recall when 'the science' (well, it didn't actually) called for cars to be sold in greater numbers as diesel-powered rather than petrol. Look how well that turned out, and similarly pushing too hard / fast on CO2 and NOx emissions.

What might look good to (poorly-informed) 'journalists' and activists (who are those often shouting the loudest for 'change') today is often shown as a poor return (or far worse) later on, because they just aren't thought through, including to conduct proper, unbiased studies by people and organisations who don't have a vested interest in the outcome.

The folly of the EV - Andrew-T

<< Indeed - the law of unintended consequences, as we are now seeing in stark detail as regards the numerous and severe negative effects of the pandemic lockdowns. All too often, changes in governmental policies, especially on the scale being touted on the subject of climate change and related issues, is poorly thought through as a 'reactionary' set of measures. >>

However, underlying all this tinkering is the implied hope that we can carry on doing all the energy-greedy things we enjoy doing (which include keeping the global economy expanding, which it has to) without considering a way to control the growth of numbers. That is a basic human urge, politically impossible to control - certainly without even talking about it.

The folly of the EV - Manatee

However, underlying all this tinkering is the implied hope that we can carry on doing all the energy-greedy things we enjoy doing (which include keeping the global economy expanding, which it has to) without considering a way to control the growth of numbers. That is a basic human urge, politically impossible to control - certainly without even talking about it.

That's the elephant in the room, we can't sustainably grow the world economy and, and very much to this point neither can all the people in less developed nations who want to do the same things as us ever hope to achieve that without burning up the planet and its resources in a small number of generations.

No doubt the cockroaches, a variety of other small zoa fauna, flora, fungi, will survive but people won't last long unless the species can limit its impact. This is not going to happen with a system that requires continuous growth

From the perspective of developed nations, we need to level down, not up.

Thought provoking article here from the usually annoying George Monbiot - of course this will be dismissed by some as alarmist claptrap for the reasons he describes, but the sums aren't very difficult..

www.theguardian.com/environment/2021/oct/30/capita...n


The folly of the EV - mcb100
Sub-10 minute I found this morning from an actual expert -

youtu.be/J8dnxANvBRQ
The folly of the EV - barney100

Worth a read, like many are saying at the moment EVs are not up to the job due to the reasons we've done to death on here. I didn't realise that being in an accident with an EV will cause more damage than an ICE car. Seems the wealthier folks get an EV for shorter journeys but when it's a decent distance out comes the diesel.

The folly of the EV - mcb100
A journal called Nature being an expert in vehicle dynamics, and active safety systems?

Just had a look on Nature’s website, and it has a plethora of pro-EV articles. It’s amazing how cherry picking quotes can distort an article if someone had the inclination.

Edited by mcb100 on 10/02/2022 at 08:41

The folly of the EV - Andrew-T
A journal called Nature being an expert in vehicle dynamics, and active safety systems?

Nature is not just about birds and bees.

The folly of the EV - ExA35Owner
A journal called Nature being an expert in vehicle dynamics, and active safety systems? Just had a look on Nature’s website, and it has a plethora of pro-EV articles. It’s amazing how cherry picking quotes can distort an article if someone had the inclination.

Nature is one of the top handful of peer-reviewed scientific journals in the world. Beyond the editorials, which are themselves written by experts, the rest of the content is peer-reviewed research. If you want to find a trustworthy scientific journal, this would be one of the very first places to look.

The folly of the EV - badbusdriver

The problem with statements like EV's potentially killing more folk in an accident because they are so heavy, and the 'other' emissions such as from brake linings, is that there is no context to them.

Re the weight, the heaviest Tesla is the Model X Plaid with its truly massive battery dishing up over 1000bhp. Just how heavy is it?, 2445kg, admittedly quite a lot, but is that down to it being an EV?. The current Land Rover Discovery with a 3.0 turbo diesel (300bhp) weighs only 83kg (around 3%) less. Go back to the 3rd gen and the Disco was actually heavier. And while the difference will be much bigger on smaller EV's with bigger batteries, something like a Zoe with its biggest battery option is still going to be lighter than most of the mid sized SUV's most folk drive these days.

As for battery linings, it is a well known fact that EV's and hybrids use brake regeneration, so most EV's will be spewing out far less brake lining particles than an ICE car.

The folly of the EV - Steveieb

Really surprised with the softly softly approach that Quentin Wilson gave to the Head of Networks. Can’t believe that Clarkson would have given him such an easy interview.

Especially the answer to the question about charging cars belonging to people not fortunate enough to have a driveway and charge point.

In real life the terrace house street are going to be littered with extension cables causing tripping hazards to pedestrians.

Speaking to a relative who has a Polestar which he has abandoned for longer journeys where he may need to recharge, because of compatibility problems, queuing and points out of order and takes his sons Fiesta.

A short bit of fun:

www.youtube.com/watch?v=3AlndKQSs6Q

Edited by Xileno on 10/02/2022 at 17:37

The folly of the EV - SLO76
I know a few people who’ve gone electric without issue (other than cost) recently, one has the top spec ID3 which she’s recently done a London run from Ayrshire in without any issues via a couple of toilet/snack/fast charge breaks. Most are quite happy except our engineering manager who bought a 16 plate Leaf and found that it would barely do 60 miles on his 60/70mph commute in winter. He’s offloaded it. Exactly as I’ve said before, the battery tech isn’t right yet. It’s too expensive and it’s useless by year 5/6. Depreciation will be crippling once the market settles down again and as dealers get stung for battery replacement on used examples, currently £6500/£7000 on a Leaf for example. I wouldn’t buy one but leasing rates are not that bad compared to similar petrol, diesel and hybrid cars. We found the ID3 was typically £70/£80 a month more than an equivalent petrol car and it’ll Save more than that on fuel. Insurance was cheap and the car itself is a pleasant looking and driving thing. It’s not something I’ll buy at the other end though.
The folly of the EV - RichardW

There's a good test coming up in 2 or 3 years - a large number of EVs will come off business lease where they have been used as Co cars due to the tax incentives. These will all come onto the 2nd hand market, so that will be the test of private consumers' appetite for EVs - either they will lap them up and the prices will be bouyant, and ICE cars will fall, or they will steer clear of them, and prices will drop. It will also test whether the tax incentive is enough for Co Car uses to stay electric or go back to ICE - the tax advantages are likely to have been diluted by then.

The folly of the EV - Engineer Andy

There's a good test coming up in 2 or 3 years - a large number of EVs will come off business lease where they have been used as Co cars due to the tax incentives. These will all come onto the 2nd hand market, so that will be the test of private consumers' appetite for EVs - either they will lap them up and the prices will be bouyant, and ICE cars will fall, or they will steer clear of them, and prices will drop. It will also test whether the tax incentive is enough for Co Car uses to stay electric or go back to ICE - the tax advantages are likely to have been diluted by then.

Good point.

The folly of the EV - Terry W

The key point to take from the interview is that it is a transition not a cliff edge.

By 2030 when pure ICE is banned, ~40-50% of cars on the road will be EV, by 2040 EVs will dominate with ~85%. Remaining ICE will all be over 10 years old.

If at any point in the next 8 years it seems the charging infrastructure cannot be upgraded effectively, the date could be deferred. I think it unlikely.

If you think EV is not for you, whether the reasons are credible or not, is up to the individual. You have 15+ years to be persuaded otherwise - or continue to run an ever older banger.

The folly of the EV - Sofa Spud

It's an article from the Daily Mail, so it's not surprising that it's backward looking and against progress.

If most vehicles are electric and most of our electricity is generated by renewable sources, then there will be a big drop in CO2 emissions from vehicles. The production of electric cars is no more polluting than that of petrol or diesel ones although the pollutants might be different.

The main obstacles to going electric for a lot of people now are:

The charging infrastructure, while improving rapidly, is still seen as inadequate and unreliable. This is especially important if you can't do fast charging at home.

Financial inertia. If I have a good petrol or diesel car at the moment I'm not likely to trade it in for an EV until I need to change the car anyway, especially if I don't do a very annual high mileage.

As well as CO2 emissions, there's also the matter of finite fossil fuels, which would run into supply difficulties in the next 50 years or so anyway as oil becomes scarcer.

Edited by Sofa Spud on 10/02/2022 at 12:33

The folly of the EV - Andrew-T

It's an article from the Daily Mail, so it's not surprising that it's backward looking and against progress.

Let's just make sure we choose the correct terms - Change is not necessarily the same as Progress, which normally implies a move forwards with some improvement. :-)

The folly of the EV - Engineer Andy

The key point to take from the interview is that it is a transition not a cliff edge.

By 2030 when pure ICE is banned, ~40-50% of cars on the road will be EV, by 2040 EVs will dominate with ~85%. Remaining ICE will all be over 10 years old.

If at any point in the next 8 years it seems the charging infrastructure cannot be upgraded effectively, the date could be deferred. I think it unlikely.

If you think EV is not for you, whether the reasons are credible or not, is up to the individual. You have 15+ years to be persuaded otherwise - or continue to run an ever older banger.

That's all well and good if they compete on a level playing field, but they certainly aren't now and, if policy is to go by, will be even more so in the future, which means those least able to change over from ICE to EV will be even further financially disadvantaged, having only the option to keep their existing ICE car on the road and paying more and more for the 'priviledge' or scrap / sell it for peanuts and rely almost solely on (normally) poor public transport (especialloutside of the major cities) and expensive car hiring when they need one. That would be, in my view, a large step back in social mobility for millions of people.

Costs of buying, renting and running EVs will likely reduce over time as the technology becomes mature, but I think we're jumping the proverbial gun in artificially making them 'mainstream' before they are 'technologically mature' / affordable tech for the masses.

The folly of the EV - Terry W

You will be able to buy new ICE until 2030, and buy (s/h) and run ICE until ~2040 by which time forecourt closures, clean air zones etc will make it increasingly difficult.

In 2040 all s/h cars less than 10 years old will be EV, and a large proportion of those over 10 years old. There will be a s/h car to suit all budgets with a support infrastructure to match.

It is a transition not a cliff edge - a case of "get used to it". No political party will reverse the plans unless demonstrably unachievable. Much else will change in the next 15-20 years - autonomous cars, shared ownership, rent-a-car schemes, etc etc.

The folly of the EV - Engineer Andy

You will be able to buy new ICE until 2030, and buy (s/h) and run ICE until ~2040 by which time forecourt closures, clean air zones etc will make it increasingly difficult.

In 2040 all s/h cars less than 10 years old will be EV, and a large proportion of those over 10 years old. There will be a s/h car to suit all budgets with a support infrastructure to match.

It is a transition not a cliff edge - a case of "get used to it". No political party will reverse the plans unless demonstrably unachievable. Much else will change in the next 15-20 years - autonomous cars, shared ownership, rent-a-car schemes, etc etc.

I'm far from convinced, given the so-called 'experts' said that autonymous cars would by now be legal and safe, and they are still being trialed well into the R&D phase, because they still aren't anywhere good enough outside of the far easier testing areas used in recent years.

This isn't the first time (nowhere near in fact) that 'experts' have made promises about X or Y tech leaps forward that either never came to fruition or were giant let down in the level of positive difference it has made, and often came along with many negative effects which were (as usual) conveniently brushed over / dismissed, often because they would jepodise lucrative governmental and private sector 'investment' in their projects.

The folly of the EV - alan1302

Costs of buying, renting and running EVs will likely reduce over time as the technology becomes mature, but I think we're jumping the proverbial gun in artificially making them 'mainstream' before they are 'technologically mature' / affordable tech for the masses.

I agree with you on that - you have 8 years to get enough vehicles that suit everyone...can't see it happening...and certainly not at costs people who have cars now will be able to all afford.

The folly of the EV - focussed
Sub-10 minute I found this morning from an actual expert - youtu.be/J8dnxANvBRQ

There are many definitions of an expert, but Quentin Wilson is not one of them, on anything, at all, ever.

The folly of the EV - Andrew-T
There are many definitions of an expert, but Quentin Willson is not one of them, on anything, at all, ever.

We always welcome honest unbiased opinions on here .... :-)

The folly of the EV - badbusdriver
There are many definitions of an expert, but Quentin Willson is not one of them, on anything, at all, ever.

We always welcome honest unbiased opinions on here .... :-)

Had focussed got any further than the name Quentin Wilson and making a snap assumption at that point, he'd have realised that this is an interview of 'an expert' (Graeme Cooper of the National Grid) by Quentin Wilson.

The folly of the EV - focussed

It doesn't matter how many experts get wheeled out to convince the public that everything will be fine, the reality is that the UK does not have enough base load power generation capacity to support the proposed electrical load of charging EV's and running domestic heat pumps.

Meanwhile, over here, President Macron has been laying out his plans for building more nuclear stations.

Yesterday Macron announced the plan to build 14 new EPR2 reactors which when integrated into the current fleet of reactors, some of which will need replacing, will result in total of 6 more reactors than currently.

The EPR2 is a modularised version of the current standard EPR reactor.

He also announced the re-purchase by EDF of Alstom which was sold to General Electric in 2015, the sale of which he masterminded when he was Hollande's backroom wizzkid ! Oops !

(Alstom make the steam turbines that drive the electricity generators in nuclear power stations)

https://www.lemonde.fr/economie/article/2022/02/11/emmanuel-macron-confirme-le-virage-pronucleaire-de-sa-strategie-energetique_6113213_3234.html

Impressive plans - if it all comes to fruition, it could all be pre- presidential election blahblah, but by the time they are built he will be long gone and probably in a cushy job in the EU. - but it's a start.

Edited by focussed on 11/02/2022 at 22:54

The folly of the EV - mcb100
Isn’t the mantra of ‘we’ve had enough of experts’ how we ended up with Brexit? For all the good that’s doing us.
The folly of the EV - Andrew-T
Isn’t the mantra of ‘we’ve had enough of experts’ how we ended up with Brexit? For all the good that’s doing us.

As I boringly said at the time, how did it make sense for the politicians elected to make such decisions on our behalf to say We can't decide, and ask those with even less idea for advice ?

The folly of the EV - Sofa Spud

It doesn't matter how many experts get wheeled out to convince the public that everything will be fine, the reality is that the UK does not have enough base load power generation capacity to support the proposed electrical load of charging EV's and running domestic heat pumps.

Meanwhile, over here, President Macron has been laying out his plans for building more nuclear stations.

Yesterday Macron announced the plan to build 14 new EPR2 reactors which when integrated into the current fleet of reactors, some of which will need replacing, will result in total of 6 more reactors than currently.

The EPR2 is a modularised version of the current standard EPR reactor.

He also announced the re-purchase by EDF of Alstom which was sold to General Electric in 2015, the sale of which he masterminded when he was Hollande's backroom wizzkid ! Oops !

(Alstom make the steam turbines that drive the electricity generators in nuclear power stations)

https://www.lemonde.fr/economie/article/2022/02/11/emmanuel-macron-confirme-le-virage-pronucleaire-de-sa-strategie-energetique_6113213_3234.html

Impressive plans - if it all comes to fruition, it could all be pre- presidential election blahblah, but by the time they are built he will be long gone and probably in a cushy job in the EU. - but it's a start.

If all the energy saved by not having to refine crude oil into petrol and diesel was diverted into generating electricity to run EVs, there would probably be no increase in demand. True, some of that energy used in oil refining is gas, which isn't renewable and produces CO2 but using it to generate electricity would save further CO2 emissions from petrol and diesel vehicle. They say petrol and diesel yield roughly 3 times the energy used in their refining. But then these engines are only roughly 1/3 efficient so that cancels out. An electric car is 85-90% efficient. So you could say that a wind turbine is only, maybe, 30% efficient at converting wind energy into electricity but then the wind energy is free and limitless, though it's intermittent.

The folly of the EV - Terry W

In 2012 average UK electricity demand was 36GW of which renewables were 1.8GW

In 2021 average UK electricity demand was 34GW of which renewables were 10,2GW

Fossil fuel generation has fallen from 25GW to 13GW.

The wind and sun has not run out. Nor is the view of horizon obscured by the blades of massed turbines. increasing wind power has been proven feasible and there is no real barrier to further development bar investment.

Wind and solar variability and transmission infrastructure are issues. Both need a storage capability. EVs may be part of the solution - a fully charged EV battery could power an average home for several days, and balance the load on transmission networks.

The folly of the EV - brum

I wonder whether the mass adoption of wind turbines (and there does seem to be an awful lot of them appearing, many more where we dont see them ie at sea), I wonder if we are walking into a greater disaster than we realise.

Increasingly I read about the climatic and weather changes they cause. And the disaster they are to many species, insects, birds, bats which are already under threat.

www.sciencedaily.com/releases/2018/10/181004112553...m

conbio.onlinelibrary.wiley.com/doi/full/10.1111/cs...6

Edited by brum on 12/02/2022 at 21:05

The folly of the EV - Bolt

I wonder whether the mass adoption of wind turbines (and there does seem to be an awful lot of them appearing, many more where we dont see them ie at sea), I wonder if we are walking into a greater disaster than we realise.

Increasingly I read about the climatic and weather changes they cause. And the disaster they are to many species, insects, birds, bats which are already under threat.

www.sciencedaily.com/releases/2018/10/181004112553...m

conbio.onlinelibrary.wiley.com/doi/full/10.1111/cs...6

Thats why they are redesigning wind turbines as they don`t (or so they say) need the massive blades they use, and it has been said they can use the tubes with ship propeller's inside to generate the electricity using less turbines over a wide area than we have now.

and as said before they are not eco friendly as they cannot be broken up and made into something else, but they do use parts for playgrounds and other things so are slightly useful

The folly of the EV - RichardW

If all the energy saved by not having to refine crude oil into petrol and diesel was diverted into generating electricity to run EVs, there would probably be no increase in demand. True, some of that energy used in oil refining is gas, which isn't renewable and produces CO2 but using it to generate electricity would save further CO2 emissions from petrol and diesel vehicle.

Much of the energy for refining comes from the off gas generated. And if you stop extracting oil and gas where exactly do you think all the petrochems to make all the plastics in your lovely 'green' EVs are going to come from????

The folly of the EV - mcb100
From an increase in the use of recycled and plant based plastics. Probably 25% of the plastics in a new car have already seen use as something else, primarily bottles.
95% of a new car (by weight) must be capable of being recycled, recovered or reused.

Edited by mcb100 on 13/02/2022 at 10:40

The folly of the EV - Engineer Andy
From an increase in the use of recycled and plant based plastics. Probably 25% of the plastics in a new car have already seen use as something else, primarily bottles. 95% of a new car (by weight) must be capable of being recycled, recovered or reused.

Isn't there a limit on how many times they can be recycled? Besides, the act of recycling often expends a considerable amount of energy and manpower, especcially for goods that are made of several different materials.

One of the big problems is that many products by the inherrant design are not easy / cheap / energy effecient to recycle or safely dispose (including incinerating) of. It's often a choice (at least for now) between cheap to initially produce but expensive / bad for the environment to recycle / dispose of later, or prohibitively expensive first time around (and thus not economic to sell for the mass market) and 'ok' (at best) on the second issue.

What WOULD be a really good idea is to go back to how the world USED to do things, i.e. make products very modular, easy / cheap to repair and where at all possible, hardy, highly reliable and long-lasting.

The changeover to many consumer products being deliberately designed with a shelf life so customers keep on buying new ones, despite the tech being there so that they DID last far longer reliably, was in my view an utter disgrace.

This is where the standardisation of car parts could be a big boon -whether for ICE or (especially) EVs going into the future. Buy a car 'today' with a bodyshell / frame that will last (with corroding) 50+ years with ease, swap out the internals rather like desktop computer parts as required.

It might put an end to specific 'makes' of car - rather like with desktop PCs being 'assembled' by small firms fom buying in a plethora of parts from all over, but it would mean, if done correctly, you tailor what you need and you can buy long-lasting, reliable parts that will essentially fit any car.

Having more 'local' assembly and repair outfits would also be a boost to local business and might reverse the decline of urban areas.

Just a thought on a Sunday with nothing better to do.

The folly of the EV - Manatee

Debates on this are almost always far too narrow.

I've already mentioned the unsustainability of exponential economic growth as an economic model, which if continued is even more certain to cause our virtual extinction than climate change. This is almost never mentioned, possibly because no-one has an answer.

Taking the narrower view that this is about eliminating fossil fuels from road transport and the generation of electricity, there is still a long list of things that need to be considered.

I don't think it can be done without hydrogen. And I think that other uses of electricity need dramatically to be reduced. The 'Insulate Britain' mob has a point, whether gluing themselves to roads is the right way to make it, or not.

The heat loss from a home with 1970's standards of insulation and air leakage losses isn't 50% or even 100% more than a house built to current standards, it's around 500% worse. It would probably make more sense to prioritise fixing that than to incentivise the installation of heat pumps in those older houses. The FB pages are already full of disappointed people who've fitted heat pumps to older houses and can't get warm or have enormous bills.

We've just built a 200 sq. m. house with an 11kW output electric air source heat pump for all heating and hot water. We've removed the gas connection from the plot. It's almost ready to move into. It also has mechanical ventilation and heat recovery (MVHR) which is relatively cheap to put in a new house at c. £5k. It means we don't have to have holes in the house (including window vents) for ventilation and 85-90% of the heat is recovered from the exhaust air. Yes, there is a supply ready for an EV charger, even though I have no current plans for an EV.

There is no silver bullet. There's a long list of remedies, and we will need to consider them all.


The folly of the EV - Terry W

I agree with most of your points - energy has been far too cheap for far too long and we are unbelievably profligate in its use.

42% of taxes come from income tax and NI. Council tax 8%. VAT 16%. Most of the rest is bits - alcohol, tobacco, corporate etc. Fuel duties are 3% of total tax paid.

Assume that the government radically altered the way taxes are levied: - eg:

  • trebled energy costs - petrol £20 per gallon, household heating bills £6k pa etc
  • reduced income tax and NI to (say) half the current levels

Ignore how it would affect different income groups - benefits etc etc would need to change accordingly. Overall impact fiscally neutral.

Behaviours would change radically.

  • Long commutes would be too expensive - get a job locally or move.
  • Downsize car - 2000kg 4x4 is completely unnecessary for most
  • invest in home energy saving - turn the thermostat down, switch off lights
  • Favour home grown not expensively imported goods and food
  • Repair and mend rather than throwaway
  • Cut out long haul holidays
  • etc etc

Increasing one group of taxes whilst reducing another does not mean the aggregate money available to the consumer changes - but it does change the way they spend it.

How much of current energy consumption would be saved - at a guess between 30-50%.

Would it make a difference to me - almost certainly. Those who are "glass half empty" would focus on that which they could no longer afford to enjoy and protest. The " glass half full" crowd would positively seek ways to take advantage of the new freedoms.

The folly of the EV - sammy1

"""We've just built a 200 sq. m. house with an 11kW output electric air source heat pump for all heating and hot water. We've removed the gas connection from the plot. It's almost ready to move into. It also has mechanical ventilation and heat recovery (MVHR) which is relatively cheap to put in a new house at c. £5k."""

What would your estimate be to run the above for a year? I am given to understand that running costs and repairs are not that cheap as compared to a gas boiler.

The folly of the EV - Manatee

"""We've just built a 200 sq. m. house with an 11kW output electric air source heat pump for all heating and hot water. We've removed the gas connection from the plot. It's almost ready to move into. It also has mechanical ventilation and heat recovery (MVHR) which is relatively cheap to put in a new house at c. £5k."""

What would your estimate be to run the above for a year? I am given to understand that running costs and repairs are not that cheap as compared to a gas boiler.

I don't know! But you can do sums based on how many kWh you expect to input to get the required heat out.

When I took the decision to use a heat pump, I was paying about 3.5p per kWh for gas and c. 15p for electric. So a straight comparison between gas eating and direct electric heating would massively favour gas even though the gas boiler is throwing some heat away out of the flue.. But a heat pump isn't using the electricity directly to heat the house, it is transferring heat from Hertfordshire (in my case) into the house. And it takes about 1kWh to transfer up to 4kWh of heat. Mitsubishi, who make the heat pump, actually rate it at 3.2:1 IIRC, because this "coefficient of performance" ("CoP") drops when outside temperatures are low. So for every 3.6p of gas I would have used, I should have expected to use 15p/3.2 = 4.7p of electricity to run the heat pump. Actually the gas is a bit less efficient so the comparison would be slightly closer than that.

As to exactly ow much heat we will need, we'll find out. I'm hoping we will not need a lot of heating of any kind because the house is very well insulated and has the MVHR to reduce ventilation losses.

There is an incentive for heat pumps which should make it favourable for the next few years.

Of course this has gone a bit awry with the massive hikes in fuel prices but I'm hoping that the low heat loss of the house will rescue us to a degree. It shouldn't need a lot of heating.