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Renewable Energy: EVOCO 10kw WIND TURBINE

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    • CommentAuthorwindyboy
    • CommentTimeMay 11th 2011
     
    Hi everyone......just about to put planning in for a 10 KW EVOCO.......has anybody out there got one or can anybody give me any news (good or bad) about this machine. We have a 6.25 m/sec site. Thanks Bill.
    •  
      CommentAuthorSteamyTea
    • CommentTimeMay 12th 2011
     
    There seem to be a few down here, not sure if there is one company fitting them or they are all individually owned. Shall ask about if I can.
    You can always have a look at the Renewable Energy Foundation website, they have a negative spin on things so they should show the other side of the coin.
    • CommentAuthorwindyboy
    • CommentTimeMay 13th 2011
     
    Thanks "steamy tea".......appreciate the response......where is "down here" ? Regards Bill.
    •  
      CommentAuthorSteamyTea
    • CommentTimeMay 13th 2011
     
    Cornwall
    • CommentAuthorpauler
    • CommentTimeMay 17th 2011 edited
     
    With such a good site @ 6.25 m/s - you need to look at what gives the best return - long term. A good starting point is the verfied MCS AEP figures:



    @ 5m/s Gaia 133 AEP : 27,502 kWh’s - Evoco 21,100 kWhs - Proven 35/2 - 23,200 kWhs

    @6m/s Gaia 133 AEP: 37, 939 kWh’s - Evoco 30,400 kWhs - Proven n/a*

    @7m/s Gaia 133 AEP: 46,527 kWh’s - Evoco 38,100 kWhs - Proven n/a*

    * Proven 35/2 MCS data not realised by manufacture (!?).

    On a 6m/s site the Gaia 133 produces roughly 7000 kwhs more than the Evoco....multiply this by FIT/export of roughly 31p = £2k per year more revenure - providing you have 3 phase!:sad:
    • CommentAuthorpauler
    • CommentTimeMay 19th 2011
     
    Apparently.....an alert has been issued to all evoco installers to shut the turbines down - due to cracked tower flanges!?
    •  
      CommentAuthorSteamyTea
    • CommentTimeMay 19th 2011
     
    Oh er.
    Just reminded me to contact my contact.
    •  
      CommentAuthorSteamyTea
    • CommentTimeMay 21st 2011
     
    Had a reply and apparently the they have been recalled.
    Reason that the people I known did not go for them is that they did not like the design, seems the maintenance could be fiddly.
    As for performance they did not know.
    •  
      CommentAuthorDamonHD
    • CommentTimeJul 28th 2011
     
    Advertising in the threads is STILL not allowed, particularly SPAMing multiple threads.
  10.  
    It looks like a bag of nails to me anyway.
    •  
      CommentAuthorted
    • CommentTimeJul 29th 2011
     
    And not on the MCS list either.
  12.  
    :wink:
    • CommentAuthorpauler
    • CommentTimeJul 29th 2011
     
    Not on the MCS list....run a mile!! :angry:
    • CommentAuthorwindyboy
    • CommentTimeSep 25th 2011
     
    Thanks for the above comments,much appreciated,my observations in response are
    1. Re Ted "And not on the MCS list either".......they are on the MCS list (one of the first to qualify the Evoco 10kw turbine apparently,see website)

    2.Re gustyturbine "It looks like a bag of nails to me anyway" .....I think the Evoco 10kw is one of the most attractive looking turbines on the market,and bearing in mind I may have to look at it for 20 plus years I'd better like what I'm looking at !! Compared to say the Gaia....there's no contest! Even if it is slightly more(the Gaia) efficient it looks sooooo UGLY (something out of the Flintstones !) and I certainly couldn't "live with it",beauty is in the eye of the beholder....absolutely!

    3.I have emailed the company re cracked flanges and will report back with their response asap....thanks for this snippet of info as it could determine whether I actually continue to erect an Evoco(subject to any modifications the company may or may not undertake) once planning has been sorted (approval expected in the next 3 weeks subject to an Ecological Survey)

    4.Thanks for the calculations Pauler....appreciated.

    Regards Bill
    •  
      CommentAuthorted
    • CommentTimeSep 25th 2011
     
    Well, they may be on the MCS list now, but they were definitely not back in July. It is not the sort of comment I would make without double checking it first - especially as it only takes about 10 seconds.

    Quote from Julian Wiley, Chairman of Evoco -
    “With MCS as the gold standard for quality assurance and consumer protection, Evoco are proud
    to join the elite few manufacturers who have managed to pass this stringent testing regime to
    achieve Clean Energy Cashback eligibility.â€Â

    Not many Proven P-35 owners going to agree with that.
    • CommentAuthorwindyboy
    • CommentTimeSep 25th 2011
     
    Hi Ted
    I bow to your superior knowledge on all matters regarding wind turbines (compared to you I know nothing)but when I put my original blog on above it was May 11th 2011 and at that stage I was definitely only considering MCS eligible turbines(I looked on the register specially...maybe though it was the Transitional list I looked at !!!???)....there wasn't any point otherwise Re Fits.....either way thanks again for your response and I'll definitely require your EXCELLENT input on this forum over the months ahead..thanks once again...Bill.
    •  
      CommentAuthorted
    • CommentTimeSep 25th 2011
     
    The MCS list did change around the June-July time frame as the 6 month grace period ran out for transitional products.

    The only relevant historical document I have is the transitional list dated September 2010, when the Evoco was listed as partially, but not fully, certified. So it was then a candidate to drop off the list pending completion of full testing.

    But if you want to go for one, it is definitely on the list now. Happy to help with any questions you may have.
    • CommentAuthorwindy lamb
    • CommentTimeSep 25th 2011
     
    Windyboy - I think the replies dated the 28th to 29th July where refering NOT to the Evoco but a spammed advert for a Chinese turbine of unknown provenance(as DamonHDs post refers). The advert has now been deleted from the thread so the line of answers seems out of context.

    Anyway, I've got a Gaia and I was also considering an Evoco initially. Unfortunately, my DNO said I would need an upgrade to my supply for the Evoco, which was the same £ as going 3 phase - then there's no real contest between the Gaia and Evoco on £/kw. I prefer the Gaia's looks but I would say that having spent £50K wouldn't I.:bigsmile:
    • CommentAuthorwindyboy
    • CommentTimeSep 26th 2011
     
    Thanks Ted and Windylamb.........much appreciated.I didnt think the Evoco looked like a bag of nails but I hadn't realised somebody had put something else on the blog ! Thanks for your offer Ted and I hope you're happy with your Gaia Windylamb...cheers.......Bill.
    • CommentAuthorjonno
    • CommentTimeSep 26th 2011
     
    Our calculations would be in line with Pauler above. The Gaia 11 kW out-performs all the other MCS certified smaller turbines at relatively low to medium wind speeds. I would suggest that 'aesthetics' should come quite a long way down the priority list when it comes to factors influencing your buying decision. In the light of recent Proven Energy issues we've put together a list of factors you should consider. Many of them are actually higher priority than the financial returns you might get from it over 20 years!
    http://www.greenenergynet.com/discussions/proven-implications-wider-small-wind-industry
    • CommentAuthorwindy lamb
    • CommentTimeSep 26th 2011
     
    Jonno - Yes very sensible.
    Took me a long time to choose a turbine and even longer to find an installer who had the experience, business model and contract terms that where acceptable to me - after all, it's my money not theirs! We had a number of visits by installers - most had similar conclusions re. the site but very different sales pitches. I ended up tendering for quotations after obtaining planning.
    One installer stood out a mile. They where much better on price, delivery time, installation, etc, etc. My installer is local to me, maintains a number of Gaias and other turbines and has visited site promptly if any problems occur.
    There are good companies out there, you just have to do your homework.
    • CommentAuthorwindyboy
    • CommentTimeSep 27th 2011
     
    Hi everyone.......getting a little concerned re previous post on cracking flanges on the tower for the Evoco...I've emailed the company asking if its true but have had no response to date.....resent today ! Pauler,I would really be interested to know if your "source" for the info was good or was it just a "rumour". I appreciate the company may not wish to admit it publicly but if I'm going to spend 50k I want to know what potential problems I may or may not have. Have you heard anything TED /WINDYLAMB ? Thanks for your input Jonno......cheers Bill.
    •  
      CommentAuthorted
    • CommentTimeSep 27th 2011
     
    The only report I have heard is from Pauler.
    • CommentAuthorwindy lamb
    • CommentTimeSep 27th 2011
     
    I've not herd anything but a steel tower is a steel tower and they are made by hundreds of companies for different applications so for Evoco to source a different supplier wouldn't be difficult. I would be very surprised if they made them "in house".
    I was surprised to learn my Gaia tower (lattice) was made in Turkey! Plenty of fabricators could do it in the UK but I suppose not as cheaply. Good thing about a lattice is that if one weld fails you've still got another 500. And the're cheaper (especially when made in Turkey!):shocked:
    • CommentAuthorwindyboy
    • CommentTimeSep 28th 2011
     
    Thanks Ted and Windyboy,just received a reply from Ben Harrison from Evoco,might be useful for others to see the response........many thanks Bill.

    "Earlier this year we did find a crack on a weld on one of our turbines base plates. This plate is the plate on which the turbine generator is mounted.



    As an MCS certified turbine there is a strict process that we have to go through if we find any product faults. We began this process alongside BRE (our certification body) and redesigned, tested and rolled out a retrofit base plate onto all of the installed turbines. At all stages BRE were involved with assessing this work and ensuring that we complied with the requirements of MCS.



    This was a significantly costly exercise, however we completed all of this work within around 3 months. Our MCS certification remained current throughout this process and was not suspended."
    • CommentAuthorpauler
    • CommentTimeSep 29th 2011 edited
     
    Hi Guys - my source for the Evoco problem was very good..as comfirmed by windboy's responce. :wink:

    p.s Gaia 133 currently " up & running" on single phase -same balde/gearbox/build structure etc etc - just small change to controller- be available in new year....:bigsmile:
    • CommentAuthorwindy lamb
    • CommentTimeSep 29th 2011
     
    A single phase Gaia would have saved me a few quid. Still, now I can use a big welding kit!

    Thinking about it, waiting would have saved money but I will have earn't the extra cost back in Fits by then. Swings and roundabouts.
    • CommentAuthorDavipon
    • CommentTimeOct 5th 2011
     
    Any of these systems using Evoco Inveters?
    • CommentAuthorJoiner
    • CommentTimeOct 6th 2011
     
    Windy - "Good thing about a lattice is that if one weld fails you've still got another 500."

    Shouldn't rely on that, though. The strength:weight advantage of a lattice comes from all welds staying put. Anyone who's done any explosives demolition will tell you that you can leverage the destructive power inherent in the weight of any structure to your advantage by 'simply' weakening it at strategic points. Think aircraft and metal fatigue!

    Prof. J E Gordon is good on this.
  30.  
    Joiner - I take your point.
    After any warrantee has expired I could re-weld a joint in the lattice but not sure I could do the same to the retaining flange on a monopole!
    I'm just about to experience 50-60mph winds so we'll see how good these Turkish welds really are!!:shocked:

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