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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

PLEASE NOTE: A download link for Volume 1 will be sent to you by email and Volume 2 will be sent to you by post as a book.

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  1.  
    C & F Wind turbines from Ireland, does anyone have any experience ? to me they look pretty good on paper and are priced very competively.
    Thanks:bigsmile:
    • CommentAuthorpauler
    • CommentTimeNov 30th 2010 edited
     
    C&F have some bold claims for a company with no operational history worth talking about....

    Their download here: http://www.cfgreenenergy.com/sites/files/cfwind/CF_Green_Energy_Brochure_2010.pdf
    has a statement " The best wind turbines in the world"...maybe, when they get hauled through MCS testing, they will change it to " Probably the best wind turbines in the world" :tongue:

    How can they claim to the above, when the Gaia 133 is a better turbine for most people in Uk,in terms of wind?

    Look at the facts:
    Gaia 133 - off shelf generator & gear box (11lts oil) and 56rpm - 133m swept area - with 12+yrs operational history!
    C&F 11kw - in house made generator - belt drive and 220rpm - 64m swept area - no operational history.

    Look at the worst case - if Gaia went pop, you can get parts of the shelf from their respective suppliers - Gearbox/Generator/Controllers..know as modular build by Gaia. The same cannot be said for a C&F generator built in house.

    I reckon the Eoltec 6kw is a better turbine,to the C&F 6kw - wonder will they bring it to Shetlands to test it there?

    They also seem to be pushing the low/high wind generation thing - best of both worlds!, or in other words...chasing two wind regions that are useless in power terms (low wind) and the high wind that dosn't happen that much, except if you live in the Shetlands.

    Be interesting to see the definition of " min active wind speed." - is this when it turns or makes power!?
  2.  
    You raise some good points, presently have planning for two 15kw (P35) Provens on a site with 6.2m/s
    Have been monitoring the situation with the Proven's and have decided to ammend my planning to fit Gaia's instead.
    Thanks
  3.  
    Smart move.
    Just out of interest, what sort of annual predicted generation figures were you given for your site for the Provens?
  4.  
    36 Mw Annually, because of the modifications to the blades they claim that it will reduce your production by 10%

    Dom I understand that you put up two Proven's a while back, are you still dissatisfied.
    A lot of farmers up here in Scotland putting in Proven's much promotion through the farming press.
    I feel most will be disappointed with their production levels
    Thanks
    • CommentAuthorpauler
    • CommentTimeDec 1st 2010
     
    Given the very competitive nature of wind turbine sales in the UK. A few good companies will rise to the top, on the back of their turbine performance & operational history, and happy customers.

    Quite a few turbine companies will go burst during " the gold rush", leaving their customers no where to go for spares, parts & back up, which is a disaster.




    :devil:
  5.  
    Posted By: earthshipally36 Mw Annually


    Is that for both together, or each?
  6.  
    Each!
  7.  
    Have you got that in writing and if so would you be willing to pass that information on to me. Also whether Proven told you this or your installer?

    Thanks, Dominic.
  8.  
    Posted By: paulerGiven the very competitive nature of wind turbine sales in the UK. A few good companies will rise to the top, on the back of their turbine performance & operational history, and happy customers.


    Or the ones that have the best marketing, and therefore sucker more of the general public into buying their product, irrespective of whether their customers are actually 'happy' with the amount of generation, the repeated problems, the down time, the value for money, the value for carbon savings, etc. etc.
  9.  
    Hi I just picked up on what you have been saying. I had the pleasure of meeting Domonic and going to his site which is only a few miles from me. I was initially applying for two Proven machines but after much consideration and searching I have applied for planning for a 50kw Endurance machine which is on a 25m mast. I am confident this will be sufficient to charge my 3000 litre thermal store with three phase emersion heaters leaving the Perge log boiler to charge for non windy days!
    The planning has been in over a year now which was refused on the basis it was an incongruent feature on the landscape and a bird might fly into it! My local council will not support any form of wind turbine where I live because I live on the top of a hill, and people will see it, and they will turn into stone!
    Feeling a little but frustrated, being prevented from putting up a turbine I have gained support from over 150 neighbours in my village bar two people. I have overwhelming public support for my proposal and now have a planning inspectorate due to visit the site very soon to make a decision.
    I believe I am making the right decision on the scale and size to run my smallholding and pay back the ridiculous grid connection fee which almost negates the whole project.
    I suspect the 18 months of planning will result in a negative response despite my best efforts. Has anyone any experience of going to the high court? The costs involved? And the likely hood of getting a positive outcome in favour of a wind turbine.
    Planning seems to be the big stumbling block and appears to be a postcode lottery. A farmer in Devon has recently had an Endurance turbine put up and lives in an equally exposed beautiful place. The turbine enhances the area it looks great.
    Incidentally it is a myth in my experience that people are opposed to wind turbines I have overwhelming support locally the comments I got were amazingly in favour. I believe it is a vocal minority who are opposed and give the wrong impression.
    • CommentAuthorwindy lamb
    • CommentTimeDec 19th 2010
     
    Sollyruston - I thought my neighbours would have a problem with my turbine application but they were all very supportive. Seems they like the idea of small schemes supporting local farms and businesses but very different when talking of a big wind farm on Crown Land and owned by a foreign company - not really surprising.
    I have heard of huge differences in Planners across the UK, some seems to accept very little information with an application others expect an Environmental Impact Assessment. I also heard that one North Wales Local Authority had a policy of refusing all wind turbines (don't know which one).
    You not only have to have the wind resource you have to be in an area blighted by industrial structures where no wild life exists, has no historical past, no airports, is not contaminated by Japanese Knot Weed, has no one living within 20 miles and has no risk of invasion (MOD need a clear view). Good Luck.
  10.  
    Thanks Windy Lamb I don't hold out much hope for my planning, It is a shame as I would like to produce my own electricity and not be held to ransom by the electricity,gas and oil companies. I think one day I will get one but it will take a few years and more money!

    I might consider applying for a nuclear waste permit to draw a bit of interest!
    • CommentAuthorbrathnach
    • CommentTimeDec 28th 2010
     
    Would be very interesting if there is anyone on here who has a C&F installed to see how the expected is matching up with actual production. Ive seen a good few of them put up over recent months.
    • CommentAuthorpauler
    • CommentTimeJan 24th 2011
     
    mmmmm....apparently C&F have now changed the belt drive system on some (all?) of their wind turbines. Seems that C&F's - R&D work is now done on their customers turbines! What ever happened to years of Research and Development before a product is launched, does marketing/selling now come before product development? Surely this will set them back in MCS and customer trust...when you rave about your belt drive, and then ditch it?
    • CommentAuthorfclauson
    • CommentTimeJan 24th 2011
     
    Check out http://www.scoraigwind.com/buildyo/index.htm before you buy any wind turbine

    The delivered values are always lower than expected
  11.  
    pauler,
    This R&D work in the field goes for all turbines. My advice would be to never buy a new version or type of turbine. Let the supplier sort the gremlins out first!!!!
    It is all to do with being the market leader and rushing testing. Turbine performance varies greatly from site to site and some turbines are not designed for certain areas and wind conditions. The first customers should either get turbines at a lower price or hold back in my opinion,
    Gusty.
    • CommentAuthorpauler
    • CommentTimeFeb 3rd 2012
     
    Apparently C&F claim about 35,000 kwhs for their 15kw.....and mcs says approx 25,000 @ 5m/s wind speeds :confused:

    Another over hyped turbine?

    BTW has anyone ever seem the offical MCS AEP figures for their turbines....they seem to be keeping those figures very close to their chest! What's the point of MCS testing when they manufactures don't show their output figures....maybe it's because the turbines produce at lot less that their marketing blurb said... :devil:
    • CommentAuthorjonno
    • CommentTimeFeb 9th 2012
     
    Pauler,
    We have requested MCS verified power curve data from C&F for a client and we're waiting for it to arrive....
    If they are not publishing it publicly like other manufacturers then you have to ask yourself 'why?'

    We have also done a financial model for the C&F 15kW based on their published power curve against the 11kW Gaia - the Return on Investment for the Gaia at a 6.5m/s site is infinitely better based on our figures.

    We have no allegiances to either manufacturer but, as you say, there is a very obvious leader at this scale. The only thing I think C&F are doing better right now is sales which they do through a large number of resellers (some of whom appear not to be wind specialists) rather than the 3 in the UK (including Gaia-Wind themselves) that resell Gaia turbines.
    • CommentAuthorpauler
    • CommentTimeFeb 10th 2012 edited
     
    Spot on Jonno!

    I can't believe these guys show hyped up production figures (AEP) in their sales brochures....and MCS then comes out and it states something completly different i.e lower AEP figures.

    Trading Standards should be knocking on their doors - as what they claimed is quite a bit less that the customer expected, and based there business case on.

    Think recently honda, the car manufacture got sued over a hybrid car mpg figures and what the lady actually got in real time mpg......we have to ask ourselves what's the difference?

    We all can accept the variablity of wind - year on year.....but when it comes down to misleading information supplied by a manufacture or supplier in order to seal a deal - well thats a court case right there!

    Also note that these turbine are class 3....which is up to 7.5m/s - should be interesting how they stack up in Scotland / Shetland isles.....who is liable for turbine if it goes into pieces - installer/dealer/manufacture/owner? - if a turbine is installed on a wind speed site outside of it's classification.
    • CommentAuthorwindy lamb
    • CommentTimeFeb 11th 2012
     
    Pauler, I think we know the answer to your last question. The manufacturer ..no it's installed outside the design envelope, the insurer.. no it's installed outside the design envelope, the installer.. possibly liable if he told you your site was suitable.
    • CommentAuthorSt11ckj
    • CommentTimeFeb 15th 2012
     
    I am looking at the small turbine market but with evoco on brake, westwind recalling turbines, c&f not giving out mcs data which is a requirement of being mcs accred, Gaia only doing 3phase, it is NOT goood. I had a new evoco reseller(previously proven) claiming evoco had no issues at all and were made in England, his face changed when I invited him to look at the wonder of the internet and google...

    I hope C&F read these threads and put everyones mind at ease and release MCS data or is it worse than a truent school boys report card??:wink:
    • CommentAuthorpauler
    • CommentTimeFeb 16th 2012
     
    Westwind recalling turbines.... Tell us more!!- don't think it's been discussed on here before?
    • CommentAuthorwindy lamb
    • CommentTimeFeb 16th 2012
     
    I thought Gaia was testing a single phase turbine due for the market in 2012 or was I mistaken?
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