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Green Building Bible, Fourth Edition
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  1.  
    Can councils legally restrict the maximum size of wind turbines. The largest turbine approved to date by our local authority is only 20kw. Only 3km away in another local authority 12 x 1.5MW turbines have been installed. In the last 12 months I know of 4 applications for 500kw turbines all being rejected and have been advised to hold back on my application for 2 x 250kw turbines until after the 500kw have gone to appeal. I do not hold my breath for the appeal process as previously 2 x 1.5MW turbines where rejected which is ironic as the new wind farm of 12 turbines agreed subsequently is less than 1km from the original site but with a different authority.
    Would a mobile wind turbine be exempt from all this planning nonsense
    • CommentAuthorSteveZ
    • CommentTimeJan 17th 2013
     
    What do you mean - Planning nonsense! I can't decide if I am more irritated by the sight of yet another turbine blot on the Cornish landscape or the thought that yet another farmer is getting yet another subsidy from the state (or at least state-permitted, and consumer-paid)

    In Denmark, where wind turbines have been in use for many years, they ease the sight of the things by making them community-owned. You live there, you buy shares in the turbine and at least you benefit directly from having them in your backyard. Here, we consumers directly over-subsidise them and have to look at them as well. Not impressed with this way of doing it at all!
    • CommentAuthoran02ew
    • CommentTimeJan 17th 2013
     
    :clap: well said SteveZ, we have just recieved notice that a local (1km from our house) quarry wish to present an application to errect a 500mw terbine which is a staggering 102m high in a field next to there quarry. we live in a very rural area where the nearest town is over 5 miles away.

    my argument is should i wish to a small eco house in the same position i would get a flat refusal, yet the planner could even concider this amazes me. lets hope they see sence.

    I love the denmark idea
    • CommentAuthorSeret
    • CommentTimeJan 17th 2013
     
    Posted By: SteveZ
    In Denmark, where wind turbines have been in use for many years, they ease the sight of the things by making them community-owned. You live there, you buy shares in the turbine and at least you benefit directly from having them in your backyard. Here, we consumers directly over-subsidise them and have to look at them as well. Not impressed with this way of doing it at all!


    We do community schemes here too, there's some down in Cornwall. Even some of the corporate-owned wind farms like the one at Delabole give the locals cheap electricity.
    • CommentAuthorjms452
    • CommentTimeJan 17th 2013 edited
     
    You might struggle to get a portable 250kW wind turbine.
    I would imagine that the concrete foundations weren't portable and you'd need a lot of rather large tent pegs...

    SteveZ - The energy we use has to come from somewhere and fossil fuels won't last forever. Unless we drop our energy use by a couple of orders of magnitude this is going to mean some 'blots on the landscape' as you put it. If you object to subsidy you might be reassured that 'big' onshore wind has the lowest subsidy of any renewable in the UK.
    • CommentAuthorwindy lamb
    • CommentTimeJan 17th 2013
     
    The Planning Authority can make up any policy they like but it may not be lawful - you'll have to challenge that in the courts/appeals process.
    I've talked to plenty of farmers who have been told by my neighbouring county that turbines over 25m hub height will be refused, step the other site of the road an you can go any height all things considered.
    There never has been any consistency.
  2.  
    Even as pro wind turbineite I feel Cornwall is in danger of having more turbines than daffodils popping up shortly, the problem seems to be the large stand alone turbines which become very visible and spread out all over, don't know the solution but pretty sure the planners could do better!

    I actually find the fields of black solar PV appearing across our green quilted county as intrusive as the turbines so on a visual basis I guess the planners will never be able to please us all.

    By the way driving out of the county (Cornwall) last week there were some monster sized bits of turbine being trucked down the A30 anybody know where they were headed?
    •  
      CommentAuthorSteamyTea
    • CommentTimeJan 17th 2013 edited
     
    <blockquote><cite>Posted By: candlemaker</cite>By the way driving out of the county (Cornwall) last week there were some monster sized bits of turbine being trucked down the A30 anybody know where they were headed?</blockquote>No.

    Why would giving people that can see a turbine cheaper electricity, a share of the payout or whatever make a turbine look any different? They are what they are.

    One of the problems we have with wind turbines is that we are so reluctant to have a few very large turbines that we have a an inefficient scattering of them, most of which are tiny in turbine terms.
    I personally think that we should be going for fewer but larger turbines, 100 m really is not that high, laid on the ground some people can run that distance in under 10 seconds. To put them into perspective have a look at this about chimney height:
    http://en.wikipedia.org/wiki/List_of_tallest_chimneys_in_the_world
    100 metres is not tall.

    As for the payment, that has come about as we do not charge for the environmental damage that is done by coal mining and fossil fuel burning. I say get rid of all subsidies and put a pollution/nuisance tax on, you can even apply that to a wind turbine/solar farm easily enough.

    This weeks comic has a bit on the very subject:
    http://www.newscientist.com/article/mg21729000.200-wind-power-delivers-too-much-to-ignore.html
    If you don't have a subscription you can always go read it for free at the local supermarket :wink:
    • CommentAuthorCWatters
    • CommentTimeJan 18th 2013 edited
     
    Were looking at an application for 6 x 127m turbines near us. The site boundary actually abuts a conservation area to the east and shadows will sweep land within the conservation area. There is another conservation area a similar distance to the south and the land immediatly to the north and west is described as having a medium/high sensitivity to wind turbine development. The whole area was previously described as an "area of best landscape". The English Heritage say they have underestimated the impact on Heritage Assets. The RSPB requested 2 turbines be moved (which they have refused to do). The site overlooks a Valley known locally as the Valley of the Spires and the local plan says views of local church spires should be respected. Views of four church spires will be effected with turbines forming a backdrop behind three of them. There are 40 turbines large already consented and 4 more in planning within 10 miles. It's in central England, and area not exactly known for high wind speeds.

    Is this the sort of place we should be putting more of them?

    PS: One of the land owners had second thoughts, wrote to object and was then remnded he'd signed a contract saying he wouldn't object and withdrew his objection.
    •  
      CommentAuthorSteamyTea
    • CommentTimeJan 18th 2013
     
    Playing Devil's Advocate here.
    Posted By: CWattersThe site overlooks a Valley known locally as the Valley of the Spires and the local plan says views of local church spires should be respected.
    Why? Is it just because there are some monuments to an imaginary friend.

    Posted By: CWattersIt's in central England, and area not exactly known for high wind speeds.
    What is the mean speed and the distribution?
  3.  
    <blockquote><cite>Posted By: jms452</cite>You might struggle to get a portable 250kW wind turbine.
    I would imagine that the concrete foundations weren't portable and you'd need a lot of rather large tent pegs...

    SteveZ - The energy we use has to come from somewhere and fossil fuels won't last forever. Unless we drop our energy use by a couple of orders of magnitude this is going to mean some 'blots on the landscape' as you put it. If you object to subsidy you might be reassured that 'big' onshore wind has the lowest subsidy of any renewable in the UK.</blockquote>

    Was thinking more pendulum effect using water for mass in a tank instead of concrete. Head mass will be significantly reduced using hydraulic drive to ground level generator and rotational force balanced by contra rotating blades.

    Steve Z

    Planning nonsense in the sense that if a farmer had a windy site he used to be allowed to build a corn mill on the site with economics being the main driving factor, hence windmills on windy sites and watermills in the valley bottoms. As for subsidy I wish I could get my hands on some.
    • CommentAuthorjms452
    • CommentTimeJan 18th 2013
     
    Posted By: CWattersThe RSPB requested 2 turbines be moved (which they have refused to do).


    This looks like the thing that will shoot them down.

    The RSPB have an admirably pragmatic approach to wind - accept it tackles a wider issue and generally not object but when they do object (in a minority of cases) they do so rather robustly. They seem like the closest thing we have to an objective arbiter - everyone else just regurgitates their existing prejudices (either way).
    • CommentAuthorwindy lamb
    • CommentTimeJan 18th 2013
     
    There's nothing wrong with sensible development but all too often individuals and Companies see ££s to be had and forget everything else. All too often turbines are proposed just because the landowner has space and wants money. We could have gone for a large turbine - have the land and the wind- but we actually considered our neighbours and the fact we have to live here amongst them, instead of greed we decided on a 11kW turbine to power just the farm needs - it had no objections, only support, sits within the landscape and does not dominate and every one is happy.
    Landowner up the road has proposed a big turbine, does not live locally, has no grid connection, no power requirement for his business, just wants to get the Fit, hasn't considered the near dwellings and doesn't generally give a s**t. Needless to say there are a number of objectors.
    Sensible development?
    •  
      CommentAuthorted
    • CommentTimeJan 18th 2013
     
    Dave, what's happening with that one? When is the CCC decision due?
    • CommentAuthorseascape
    • CommentTimeJan 18th 2013
     
    There does seem to be a madness at foot here within planning authorities. Take the other thread - Flavia's enforcement notice regarding 2 pv panels on a house already within a built environment - upsetting the neatness of the rectangle seems to be the crime.
  4.  
    Windy

    I could have gone down the 11kw route but my on farm electric requirement is 30kw and at average windspeed of 6.5 m/s a 250kw turbine is required. Part of the problem seems to be the classification of turbines by peak power rather than average wind speed power.
    • CommentAuthorEd Davies
    • CommentTimeJan 18th 2013 edited
     
    Posted By: renewablejohnPart of the problem seems to be the classification of turbines by peak power rather than average wind speed power.

    More to the point, the power output is irrelevant for planning purposes. Surely turbines should be classified for these purposes by hub height and blade length if simple numbers are to be used.
  5.  
    Ed

    Classification by hub height and blade length is pretty meaningless. The particular turbine I am looking at can have a hub height of anywhere between 25 mtrs and 45 mtrs with a blade length of 15 mtrs. Obviously given the choice based purely on output it makes far more sense to have a hub height of 45 mtrs rather than 25 mtrs. What you then end up with is a maximum height limit resulting in either small turbines on high masts or large turbines on low masts neither of which are efficient or cost effective.
    • CommentAuthorEd Davies
    • CommentTimeJan 19th 2013
     
    Posted By: renewablejohnWhat you then end up with is a maximum height limit resulting in either small turbines on high masts or large turbines on low masts neither of which are efficient or cost effective.

    No, if I'd meant simply the sum of the hub height and blade length (i.e., maximum tip height) I'd have written that. The whole issue if very complicated but if you want to reduce things to simple numbers it would, I think, be better to use some function (not just the sum, but I don't know quite what) of hub height and bade length, rather than the nominal power output.
    •  
      CommentAuthorSteamyTea
    • CommentTimeJan 19th 2013 edited
     
    Posted By: Ed Daviesbe better to use some function (not just the sum, but I don't know quite what) of hub height and bade length, rather
    Could use the apparent area that is obscures from set distances for your function. Perspective is a wonderful thing.

    Or how about for every wind turbine built an ugly building or structure is pulled down, that would be fun
    •  
      CommentAuthorted
    • CommentTimeJan 19th 2013
     
    Nominal power is to a large degree governed by swept area, which is defined by blade length, which also determines the minimum hub height. It seems a pretty good proxy to me.
    • CommentAuthorwindy lamb
    • CommentTimeJan 19th 2013
     
    As I said , I'm all for sensible development.If your business has a high electric usage then a bigger turbine can be justified. I have a problem with speculative turbine developments where on site electricity requirement is nil, landowner lives away, neighbours live under it, etc, etc and where the only motive is "easy" profit. Sure one doesn't have to justify to Planning any energy requirement or renewable energy need but you should need to justify it to your conscience.
    Ted, the one near me ? = Planners are waiting for a proper noise survey - not that they'll get that as the sound level meter used did not have a suitable wind shield only the normal one good for less than 3.5 m/s. I've seen some data and their lowest background readings are 38dB(A) whereas I have plenty of data showing 25-30 db(A) L90. Some fun is expected!
    •  
      CommentAuthorSteamyTea
    • CommentTimeJan 19th 2013
     
    Posted By: windy lambI have a problem with speculative turbine developments where on site electricity requirement is nil, landowner lives away, neighbours live under it, etc, etc and where the only motive is "easy" profit
    Would you apply that same ruling to all forms of power generation? :wink:
    •  
      CommentAuthorted
    • CommentTimeJan 19th 2013 edited
     
    Posted By: windy lambTed, the one near me ? = Planners are waiting for a proper noise survey - not that they'll get that as the sound level meter used did not have a suitable wind shield only the normal one good for less than 3.5 m/s. I've seen some data and their lowest background readings are 38dB(A) whereas I have plenty of data showing 25-30 db(A) L90. Some fun is expected!


    Do you know which acoustics company they've used or was it an in-house effort?
    •  
      CommentAuthorSteamyTea
    • CommentTimeJan 19th 2013
     
    Posted By: tedDo you know which acoustics company they've used or was it an in-house effort?
    I am keeping an ear on this:bigsmile:
    • CommentAuthorDon_Munro
    • CommentTimeJan 19th 2013
     
    I am all for small wind turbines they work when in the winter the light is not enough to run the solar panels and that is when we use our electric. Ban these then what is left we all end up glow in the dark from water that has been used to cool a reactor. Take a leaf out the army book and paint the turbine to blend in to the area, if we used more small turbines then they would not be the eye sore the huge one's are. The cost of a turbine is lower than the panel's to produce the same KVA. You can have a vertical axis turbine if you don't like the horizontal one.
    •  
      CommentAuthorSteamyTea
    • CommentTimeJan 19th 2013
     
    Don
    Hate to say to say it but small turbines are not as efficient or as effective as large ones, main two reasons is that the power output is a function of the square of the swept area and they lack height.

    Also not sure that water would actually glow as it is a neutron absorber, may steam a bit. :cool:
    • CommentAuthorCWatters
    • CommentTimeJan 19th 2013
     
    Posted By: jms452
    Posted By: CWattersThe RSPB requested 2 turbines be moved (which they have refused to do).


    This looks like the thing that will shoot them down.

    The RSPB have an admirably pragmatic approach to wind - accept it tackles a wider issue and generally not object but when they do object (in a minority of cases) they do so rather robustly. They seem like the closest thing we have to an objective arbiter - everyone else just regurgitates their existing prejudices (either way).


    They haven't objected to the whole development which is perhaps why the applicant has ignored them.
    • CommentAuthorDon_Munro
    • CommentTimeJan 19th 2013
     
    True if its not a good position but a 5KVA turbine set on 10/15 meter pole in an area that is on high ground not down in a valley should pick up a good rate of wind. When I looked in to fitting these they were to go on top of a block of flats 6 floors up so no problem with the wind. There is an easy way to test the proposed position with an anemometer set on a pole of the estimated hight. The company I was talking to had a lot of data on the positioning of these turbines it was very interesting.
  6.  
    Small turbines are a real problem around our village. To date within a 2 mile radius we have 3 x 5kw 4 x 10kw and 2 x 20kw. The whole lot added together does not generate half as much as one of my proposed 250 kw turbines and the village is now looking cluttered with turbines. It would have been far more sensible to have a community scheme but I was overruled by the parish council who seem to have there own agenda.
   
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