Gone with the wind: England's most important coastline

By Christopher Monckton of Brenchley

I shall not cease from mental fight,

Nor shall my sword sleep in my hand,

Till we have built Jerusalem

In England’s green and pleasant land.

Thus William Blake, in the coda of the mystical poem that the nation belts out at full if not always tuneful volume on the Last Night of the Proms at the Albert Hall every summer.

England’s g. and p. l. is not what it was when Blake wrote about it. The place is being expensively carpeted with ugly, medieval, lo-tech wind farms.

The governing class still likes windmills. It is making a fortune out of them, at everyone else’s expense. 

The Left support windmills because the developers quietly give their parties – “Labor”, the “Liberal” “Democrats”, and the “Greens”, in order of Leftness – huge kickbacks from the massive State subsidies they get.

The center-Left “Conservatives” like them because, like “Dave” Cameron’s pa-in-law, the wind farms are profitably built on their vast estates.

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The unspeakable “Tim” Yeo, “Conservative” chairman of the Commons Environment Committee, who came off very much second-best in a tussle with Professor Dick Lindzen at a recent hearing, makes around $150,000 a year (in addition to his fat Parliamentary salary and allowances of $1 million a year) from various soi-disant “renewable” energy boondoggles subsidized by taxpayers.

Yeo’s committee has acted disgracefully, suppressing or sneering at any testimony (such as that from Professor Lindzen) that threatens’ its members’ personal fortunes and the immense donations to their parties from people whom their insane climate policies have made into multi-millionaires.

Johnny Taxpayer, who pays £30 billion a year for the mad climate policies that represent the biggest transfer of power and wealth in human history from the little guy to the fat cat, is heartily sick of wind farms.

Half of all zoning consents applied for by greedy developers supported by members of parliament whose parties hope to profiteer from wind farms are now being turned down, even though the government desperately wants local authorities to grant them because the Brussels junta, whom we do not elect, requires us to generate a fifth of our electricity from “renewables” by 2020.

The proposal that bids fair to bring the entire tottering house of cards crashing down is just about to be submitted for zoning consent.

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Britain’s most important coastline – the Jurassic world-heritage coast in Dorset – is about to be ruined irretrievably by the Navitus Bay Wind Array, 194 wind turbines almost 600 feet high, covering six square miles, less than 9 miles out to sea.

The swept area of each turbine is 200,000 square feet. Yet the mean output of 4000 acres of vast 5 MW wind turbines, even at the absurdly optimistic 35% capacity factor claimed by the developers, will be just 339.5 MW. A single modern 4 GW coal-fired power station produces ten times as much output.

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Figure 2a. The Navitus array, seen from Durlston Head lighthouse on the Jurassic Coast, will span almost 45 degrees of arc (nearly the entire field of view here).

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Figure 3. The sheer size of the proposed Navitus Bay Wind Array wind farm is disproportionate to and intrusive upon the fragile and important landscape of the area. The illustration, kindly supplied by the Poole and Christchurch Bays Association, shows the scale of a 5 MW and a 7 MW turbine set against the Needles Light, one of Britain’s most-loved landmarks (they will not, of course, be this close to the coast). The array of 194 turbines each 581 feet high and sweeping an area of 200,000 square feet will be within 11 miles of the Needles. The UK Government’s minimum offshore distance for wind farms is 12 miles. The wind farms will tower over the neighboring cliffs.

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The pathetic 339.5 MW output of this monstrous boondoggle is less than 0.8% of the 43.2 GW mean total UK load. Electricity accounts for 33% of UK CO2 emissions, which, at 142.6 MtC (522 Mt CO2) in 2008, represented 1.72% of global CO2 emissions.

Therefore, Navitus Bay will abate 0.0045% of global CO2 emissions. The annual subsidy for 339.5 MW over 8766 hours, at 1.8 times the Renewable Obligation Certificate price of $82.80 (£46), will be $444 million, or $2.22 bn over five years. The subsidy regime is too uncertain for reliable costing thereafter.

The subsidy is part-paid-for by a Climate Change Levy of about $0.09 kWh–1 on non-exempt consumers of electricity, and a Carbon Price Floor. These two levies brought in about £700 million ($1.2 bn) in 2013. The 2.975 TWh projected to be generated annually by Navitus Bay is equivalent to 7.235% of the 41.132 TWh generated from the renewables subsidized by the levies.

Accordingly, some $87 million of the annual cost of the levies would be attributable to the Navitus Bay project and, as a market distortion intended to favor renewables at the expense of fossil-fueled generation, is properly treated as additional to the subsidy, so that the five-year gross cost of the project is $22.65 billion, and that is before taking account of the cost of interconnection to the national power grid.

Armed with this information, we can determine whether Navitus Bay will make a useful contribution to cutting global CO2 emissions.

Navitus Bay is to come onstream by 2021. We shall study the first five years of the project, from 2021-2025. Beyond that period, the subsidy regime is uncertain.

CO2 concentration, on business as usual, will increase by 11 pmv from from 412 to 423 ppmv over the five years. Of this 11 ppmv, the 0.0045% abated by Navitus Bay represents 0.0005 ppmv.

The global CO2 forcing abated by Navitus Bay over the period, using the CO2 forcing equation, is 5.25 ln(423/422.9995), or 0.000006 W m–2.

The fraction of global warming abated is 0.000006 W m–2 multiplied by the five-year Planck sensitivity parameter 0.323 K W–1 m2, or 0.000002 Cº. That is approximately 2 millionths of a degree.

The unit mitigation cost, which is the cost of mitigating 1 Cº of global warming by measures of equivalent unit cost worldwide, is the five-year subsidy of £2.65 bn divided by the 0.000002 Cº global warming abated by Navitus Bay over the five-year period, or a mere $1.3 quadrillion.

The global total mitigation cost, which is the cost of mitigating the 0.08 Cº global warming that IPCC (2013) projects will occur over the five year period of study, is 0.08 Cº mutiplied by the unit mitigation cost of £1.3 quadrillion. That gives $109 trillion, which is $15,560 per head of global population or, as a percentage of projected global GDP of $436 trillion, 25%.

The benefit-cost ratio, assuming that adapting to 1 Cº unmitigated global warming over the 21st century would cost 1% of GDP, broadly consistent with Stern (2006) and IPCC (2013) on the assumption that little warming occurs, is 25.

It is 25 times costlier to address global warming with mitigation projects such as Navitus Bay than to allow the projected global warming to occur and meet the costs and damages of adapting to its consequences.

The “Greens” in the Bournemouth area, which will have its tourism industry wrecked by the medieval mechanical triffids visible in the bay less than 12 miles away, are of course backing this environment-destroying project because they, too, benefit from generous handouts from “renewable”-energy corporations.

Never mind the national finances. Never mind the taxpayers’ finances. Never mind the immense environmental damage the wind array will cause. Never mind the world heritage status of the Jurassic coast. Never mind the birds that will be killed. The Greens will profit, and – communists though they be – they are now the most rapacious capitalists on the planet, when it comes to their own bank balances.

Their argument in favor of this nonsensical scheme, which will be visible from the three major centers of Poole, Bournemouth, and Christchurch, as well as from the Needles, one of Britain’s best-loved landmarks and a haven for sailors, and from Durlston Head on the Jurassic Coast itself, is that almost 1.3 million tons of CO2 a year will not be emitted thanks to the turbines.

The calculations we did earlier, showing that it would be 25 times costlier to make global warming go away with offshore wind farms than to let the warming happen and adapt to it, were done on so generous a basis that we assumed it was true.

But it wasn’t true. The problem is that the wind, even offshore, is so fickle that the array will only generate electricity a third of the time. So just as much fossil-fueled capacity as before has to be kept onstream and spinning in case the wind drops. But instead of spinning at full and efficient capacity, it is kept spinning in a fashion so inefficient that there is no CO2 saving from the average wind farm at all.

On this true basis, it is infinitely costlier to make global warming go away with wind farms than to let it happen, because wind farms actually add to CO2 emissions when all is said and done.

The developers’ claims, parroted by the Greens, about the amount of CO2 emissions that the wind farm will “save” are entirely without foundation, as are their claims that the wind farm will help to meet the UK’s CO2 emissions targets laid down by our unelected masters in Brussels. The array, like all wind farms, will actually increase our CO2 emissions.

But it’s going to create jobs, right? The developers’ website proudly says there will be – wait for it – 140 permanent jobs keeping the turbines running. At a project subsidy of $0.53 bn a year, that works out at getting on for $4 million per job, per year.

The developers also claim the project will increase the UK’s “energy security”. Er, no, it won’t. There will be many tons of extremely scarce and expensive neodymium in each windmill, and that comes almost entirely from China, at enormous environmental cost in the shape of acid pollution of the water table for thousands of square miles via the process to leach the neodymium out from the ore. Not that you’ll hear much from the Greens about that. Wonder why not.

And how is the Royal Navy, with more admirals than rubber ducks, going to defend these and other offshore wind farms against sabotage? Security? Schmecurity.

Finally, the developers claim – and this is heroically insane – that the project will “stabilize electricity prices for the future”. Try telling that to the average energy user, who is paying at least twice what he was paying for electricity just a few years ago. A substantial fraction of the increase is attributable to subsidies for wind farms.

You would be forgiven for thinking that this proposal, like the regime of subsidy that has attracted it, is bonkers. So it is – and that is how it is going to be stopped.

Zoning consents for large projects like Navitus Bay have been taken out of the hands of local authorities. Too many of them, elected by the voters who might have to live next to these monstrous arrays, were saying No when Ministers and civil servants could only profiteer if they said Yes.

So Ministers now decide the bigger proposals themselves – or, at least, a vast bureaucracy decides on Ministers’ behalf. However, it is a Ministerial decision, and it is accordingly subject to judicial review in the Administrative Court in London.

The law is clear. If a decision is irrational, it is unlawful. Ministers are given very wide discretion, but, if a Minister takes a decision which, coldly dissected by a court, makes no sense whatsoever because no reasonable or sane Minister could possibly have taken it, the court is obliged to set that decision aside.

Watch this space. Navitus Bay could well prove to be the straw that broke the camel’s back. Show Fig. 1 to a court and it will start to question very carefully everything said by the developers, the Greens, and the government. And, as with the case against Al Gore’s movie in 2007, once the court starts to ask questions there is nowhere for the Forces of Darkness to hide.

Some 50 residents’ associations have already banded together to fight this poisonous scheme. Let us hope they fight it all the way, and let us hope they win. Otherwise, we shall all be singing a new version of Jerusalem:

… till Socialism’s builded here

In England’s Green, unpleasant land.

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Figure 6. Views of the Jurassic World Heritage Coast, as it is for now. Enjoy it while you can.

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Figure 7. The last Great Bustard in the Spanish province of Cadiz, killed by a wind farm.

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April 29, 2014 12:29 am

michel:
You provide good, useful and important information in your post at April 29, 2014 at 12:00 am which says

The issue of judicial review is more complicated in the UK than the article suggests. To be reviewable, a decision has to be ‘Wednesbury unreasonable’. You can look up the Wednesbury case. A quick summary would be that the decision, to be reviewable, has to be so unreasonable that no rational public authority would have made it. That is a very, very high standard indeed.
There’s no doubt in most of our minds that UK energy policy is idiotic, and probably that much of its motivation is the profit of the alternative energy lobby and industry. However, to prove to the satisfaction that no rational public authority would have endorsed this particular scheme? Its going to be a very tough one. And a very expensive one.

Your point about cost is the main reason why there has been no attempt to fight the legal case to date. The government and the troughers have effectively unlimited funds but opponents of windfarms don’t. The matter needs to go to the High Court because a Planning review does not have authority to consider matters except the specific Planning Application.
Furthermore, providers of ‘conventional’ electricity have no reason to oppose windfarms because large use of windfarms increases (yes, INCREASES) the need for “conventional” electricity supplies. And this increase to need for “conventional” electricity supplies is one of the reasons why building windfarms could be shown to be ‘Wednesbury unreasonable’ if the matter were be tested in the High Court.
More information and detail of why there is a case for windfarms being ‘Wednesbury unreasonable’ is here.
Richard

April 29, 2014 12:30 am

Whether windmills are ugly on the one hand or just take getting used to on the other is a matter of taste, I suppose. If they were indeed pulling their own weight, I might be persuaded to take the latter view.
But knowing that deprived of subsidies and therefore maintenance they would rapidly become useless hulks is what in my mind places them below the “satanic mills” category. At least the latter can sometimes be reclaimed as office buildings or even condos.

April 29, 2014 12:37 am

milodonharlani says:
April 28, 2014 at 7:52 pm

There was a song to that effect once. And still.
http://youtu.be/LHsN81A3cHI

David Schofield
April 29, 2014 12:45 am

The 12 miles was chosen as this is the limit of UK territorial waters. So it’s as far as we can go without entering international waters.

April 29, 2014 12:47 am

Destruction of a great sailing area as well.

April 29, 2014 12:52 am

My Lord, you missed out a cost.
Presumably someone will have to pay the costs of a powerful (80 tons bollard pull?) tug on permanent standby at the entrance to The Solent.
Well, a large container ship broke down, and eventually went aground, fairly close by not long ago.
I don’t think one of those adrift inside the “array” would be very welcome.

AlecM
April 29, 2014 12:56 am

There is no significant CO2-AGW, as is being shown experimentally and theoretically. In reality we are heading into a new Little Ice Age. One of the features of such periods is a rise in stormy weather as temperature gradients over the globe increase. This wind farm will have to face much higher stresses than it is being designed for.
On the political front, the UK public is just starting to realise that politicians pushing fake IPCC ‘science’ and windmills, in return for the promise that they and their families will become part of the rich elite whose aim for 25 years or so has been to cull half the UK population, are utterly corrupt. Once major power cuts start, about 2017-2018, the people will rise in rebellion but it will be too late because the inner cities will be dying and the paramilitaries will have established the cordons.
The US is ahead of the UK in this regard; Obama’s paramilitaries have been trained and armed.

Rhys Jaggar
April 29, 2014 1:08 am

It’s the old story about Britain’s decline: there is insufficient punishment for small-minded nasty individuals accumulating wealth at the expense of the nation’s economy.
The lesson children need to learn in British schools is simple: assume that the worst solution for the country will be implemented, as it will benefit the nastiest, who always retain power in this country. Never assume that appealing to decency will win the day: it won’t. Never assume that the lessons you are given about ethics, morals or behaviour relate to real life. They relate to utopia. Always assume that the aim of the few is to destroy the heart, soul and happiness of the majority for no better reason than that they are money-grabbing, self-serving sadists.
I wonder what the nation’s psychologists would find happened to childhood depression if you taught them that eh??
Going skyrocketing or going down due to having no illusions to harbour any more??

April 29, 2014 1:09 am

This morning as I write the total electricity being generated in the UK by all 5000 on-shore and off-shore wind turbines is 0.1 GW! Wind is meeting 0.2% of demand on the Grid giving a load capacity of 1%. We could generate the same amount of electricity if each one of us peddled on cycling machines for 30 minutes per day, and it would save the NHS a fortune ! Perhaps this is what Ed Milliband meant when he promised to create a million new green jobs!
See Live updates of UK power generation here
I also think off-shore wind farms have a far worse visual impact on our small island than on-shore wind farms. Great Yarmouth beach has been ruined. and so has Clacton. There were plans for a western array off Lundy Island which would have totally ruined the beautiful north Devon coast line, which luckily protesters managed to stop. Why do we never learn the lesson of the sixties when town planners ripped out the historic centres of our cities to build the rusting concrete housing and shopping centres we now have to pull down? I fear that in 30 years time we will be left with another set of rusting “Easter Island” type relics sealed to the sea bed which will cost tax payers vast amounts of money to remove. That is if we have any productive economy by then !

BruceC
April 29, 2014 1:12 am

A shameless plug for an Ozzie site (from an Ozzie) dedicated to wind mills, especially if you live in Australia (also contains many over-seas wind mill links);
http://stopthesethings.com/
Disclaimer: I have nothing to do with this site, only wishing for it to have a wider audience.

nc
April 29, 2014 1:13 am

When this windfarm insanity comes to end will the concrete foundations be our new Easter island like monoliths, maybe modern Stonehenges?

April 29, 2014 1:24 am

As ever, I am most grateful to the commenters here, nearly all of whom support my contention that neither this nor any wind farm should get any subsidy. Trolls are mostly staying away so far.
Michel says judicial review will be difficult. However, I have plenty of experience of judicial review. It was I who wrote the legal opinion that saved the West Highland sleeper train when Queen’s Counsel from both sides of the Border said nothing could be done to save it. I came within an ace of keeping Britain out of the Maastricht Treaty, also by judicial review, and the Crown had to pay its own costs. And it was I who recommended judicial review in the Al Gore case in 2007 and drafted the 80 pages of scientific testimony. We won.
As Richard Courtney has pointed out, if the effect of wind farms is at best to reduce CO2 emissions by only a small fraction of the amount claimed by the developers and at worst to add so much additional CO2 via the spinning reserve that in net terms more CO2 is emitted than if there had been no windmills, then the policy is one that no reasonable minister could adopt. And, given that the cost of making global warming go away via windmills, even if the amount of CO2 reduction claimed by the developers were achieved, is 25 times the cost of letting global warming happen and simply adapting to its consequences, and the cost of electricity from wind farms is many times that of fossil-fueled electricit, the policy is not merely unreasonable but irrational.
The Wednesbury case does not set a precedent that one must prove irrationality – only that one must prove unreasonableness. If we can prove irrationality, then unreasonableness is proven a fortiori and we win the case.
Nor is it expensive if one does most of the work oneself. In the unlikely event that insufficient funds to pay lawyers are available, it is possible to argue before the Administrative Court in person, and, though sneering court officials put many obstacles in the way of such appearances, the judges are very helpful and will hear the case. Already, opponents of this gruesome proposal are beginning to prepare their case. They will, of course, try every other avenue first. They will submit thousands of individual objections. They will appear at public meetings. They will write reports for the planning inspectors. They will attend hearings by the inspectors and speak at them. They will write to Ministers. Members of Parliament and local councillors are already speaking out openly against this proposal. Everything that can be tried will be tried. But if all else fails, and if I read the mood of the campaigners correctly, this proposal will end up in the Administrative Court.
And what if the opponents of wind farms win. If they deploy the Courtney argument – that one ends up emitting either more CO2 or hardly any less CO2 with windmills than without – and if they win on that ground, then all future subsidies to wind farms in Britain would become unlawful overnight. Navitus Bay is the ideal project to fight, because it fails every environmental test of acceptability, and – unlike most wind farms – will have a disastrously adverse effect on several major centers of population. This one will be well worth watching.

April 29, 2014 1:25 am

Monckton of Brenchley: “But instead of spinning at full and efficient capacity, it is kept spinning in a fashion so inefficient that there is no CO2 saving from the average wind farm at all.”
Although it is well known (or I think it is) that so running fossil-fuel plants as to back up (unreliable) wind turbines makes them generate more emissions per kilowatt-hour than running them in a base-load mode would, I had not heard of installations where the problem was so bad as completely to eliminate the turbines’ emissions benefit. Does anyone have citations for that proposition?

BruceC
April 29, 2014 1:29 am

Clive Best 1:09am, April 29.
There is a similar web-site here, which also has graphs for current demand;
http://www.gridwatch.templar.co.uk/

John Law
April 29, 2014 1:34 am

Excellent article Christopher.
Unfortunately our seascape overlooking the Irish sea from the North Wales coast, along to the Great Orme at Llandudno is already despoiled with wind turbines, with more to come.
Eventuality the politicians will pay the full price for this mindless vandalism, with the first instalment in Ma,y with the destruction of the Con and Lib vote at the European elections by UKIP.
Unfortunately the rump left (25%) in the UK, like I guess the USA, is in thrall to big state non solutions to non problems. The EUSSR is their dream world.

AlecM
April 29, 2014 1:39 am

Born: the argument about fossil fuelled plant backing up windmills needs to be understood in very stark terms. Think of a synchronous Power Grid as a Nation’s blood supply. When just the heart is involved (the old central power stations), the system works because Grid Engineers have developed tricks over many decades to anticipate load change and there is intrinsic energy storage.
However, windmills are parasitic. Attached to the ‘skin’ at many places far from the ‘heart’, they speed up and slow down at a tremendous rate and the grid falters many times. Recently, 20% of the population of Scotland were without power for 3 hours because one half cycle of the system failed, and it tripped out. Germany has over 1000 such incidents a year and their Vice-Chancellor stated recently the game has ended; their Grid can take no more: http://notrickszone.com/2014/04/27/angela-merkels-vice-chancellor-stuns-declares-germanys-energiewende-to-be-on-the-verge-of-failure/
The UK’s politicians, led by the idiot Davey who heads up the ‘Department of Energy and Climate Change’ are trying a finesse, using banks of diesel generators in disused quarries. These have c. 25% thermodynamic efficiency and kick in to cover low wind periods. At this moment, Britain’s windmills are producing next to zero power. We are importing nearly 10% of demand.
The diesel units, hidden from Public View, make the windmill tranche use more fossil fuel and produce more CO2 emissions than the old coal fired power stations. The windmill game is all about shifting control of power prices to the fascistic elite, nothing to do with CO2 emissions.

April 29, 2014 1:43 am

richardscourtney: “A wind turbine designed to collect energy from tropical storms would rarely operate, and a wind turbine designed to collect energy efficiently from ordinary winds would be damaged if it tried to operate in a tropical storm.” (From the cited reprint.)
Although I’ve heard that’s true, I haven’t understood why. I assume they feather the blades in high winds. Can’t a small pitch change from that position enable the turbine to operate without damage at high winds? I know the answer’s no, but, again, I don’t know why.

April 29, 2014 1:52 am

AlecM
Thanks for the response, but I had actually known the problem in qualitative terms already. What I’m actually looking for is something more quantitative–which I’m hoping to have found once I’ve finished Mr. Courtney’s presentation.

April 29, 2014 1:57 am

Joe Borns:
At April 29, 2014 at 1:25 am, and in response to a point I made above which was cited by Monckton of Brenchley, you ask

Although it is well known (or I think it is) that so running fossil-fuel plants as to back up (unreliable) wind turbines makes them generate more emissions per kilowatt-hour than running them in a base-load mode would, I had not heard of installations where the problem was so bad as completely to eliminate the turbines’ emissions benefit. Does anyone have citations for that proposition?

The magnitude of the problem is stated by David Tolley in my paper and I again link it <here.
It says there
blockquote>David Tolley (Head of Networks and Ancillary Services, Innogy (a subsidiary of the German energy consortium RWE) has said of windfarms in the UK, “When [thermal] plant is de-loaded to balance the system, it results in a significant proportion of deloaded plant which operates relatively inefficiently.

Coal plant will be part-loaded such that the loss of a generating unit can swiftly be replaced by bringing other units on to full load. In addition to increased costs of holding reserve in this manner, it has been estimated that the entire benefit of reduced emissions from the renewables programme has been negated by the increased emissions from part-loaded plant under NETA.”
(NETA is the New Electricity Trading Arrangements, the UK’s deregulated power market.)
Although (as the reference states) Tolley publicly said this in 2003 there has been no refutation of it for then or for any time since.
Richard

AlecM
April 29, 2014 2:07 am

Born: here is the quantification. Coal and nuclear plants can idle at 20% of full output and ramp up in ~ 60 minutes to cover falling wind speeds with relatively little effect on fuel consumption, in the case of non-supercritical coal a reduction of thermodynamic efficiency from 38% to say 33%.
CCGTs and supercritical coal are very different. CCGT maximum thermodynamic efficiency is c. 60%. Reduce output to 60% and efficiency falls to 50%. Go below that and the steam cycle fails, reducing efficiency to <40%. You don't touch supercritical coal unless you want to wreck the plant by thermal fatigue. If you want to idle CCGT at say 20% output, you have to waste gas heating the steam boilers to avoid thermal fatigue and thermodynamic efficiency falls to c. 30%.
The way out for the dishonest UK politicians was to use diesel plant, cheap and nasty with quick turn on. The decision to do this was taken first in 2007 for planning, then 2012 in earnest. Davey was told by his Chief Scientist that this could save no CO2 emissions but still went ahead. The Chief Scientist is leaving before this ordure hits the very public fan.
The effect of the reduction of thermal plant efficiency is to make windmills save a third of the CO2 emissions up to 10% 'penetration'. Above 10% and there is no saving but you have to dump the peaks offshore at zero cost. Insist on increasing penetration and you increase CO2 emissions in a non hydro grid, in the UK it's diesel plant which does it. Use coal and the penalty is worse. Pump storage is a way out but it is hideously expensive.

April 29, 2014 2:12 am

richardscourtney:
Thanks for your response, which I saw just after I read your paper’s Table 2 on page 11 and thereby found the information I was looking for.
Thanks again.

April 29, 2014 2:21 am

Joe Born:
At April 29, 2014 at 1:43 am you ask me

richardscourtney:

“A wind turbine designed to collect energy from tropical storms would rarely operate, and a wind turbine designed to collect energy efficiently from ordinary winds would be damaged if it tried to operate in a tropical storm.”

(From the cited reprint.)
Although I’ve heard that’s true, I haven’t understood why. I assume they feather the blades in high winds. Can’t a small pitch change from that position enable the turbine to operate without damage at high winds? I know the answer’s no, but, again, I don’t know why.

It is because the energy in wind is proportional to the cube of the wind speed and the blade tips must not move faster than the speed of sound.
The “cube power issue” is explained mathematically early in the lecture.
The additional energy of high-speed-gusts is immense so rapid acceleration of the turbine occurs for gusts, and it is unmanageable at high wind speeds.
A wind turbine vibrates to destroy itself if its blades’ tip speed goes supersonic.
As the lecture explains, a turbine is progressively feathered as wind speed increases. This ensures that excessively high blade tip speeds will not occur, and it stops the turbine from operating at high wind speeds.
Richard

April 29, 2014 2:22 am

AlecM:
Thanks for the information. Although I worked extensively with a supplier of coal-fired and nuclear steam-supply systems back in the ’70s, I had forgotten (to the extent I ever knew) the differences among the various types’ efficiencies and spin-up times.

stephen richards
April 29, 2014 2:25 am

None of what we do or say will make any difference at all unless we eject this etonian mess along with the dickhead who persistently points his finger at everyone.

tango
April 29, 2014 2:31 am