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30-03-2009, 22:39   #16
De_man
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Quote:
Originally Posted by Doctor_L View Post
If I was to go out and price turbines today, I would be look for quotes and information on the following

ISKRA
Proven
www.Turbotricity.com (Quentin Gargans new turbine which is being tested at the moment)
Skystream
hi liam, we moved into the house a little over a year ago, rain water harvesting, solar panels etc etc installed...just pricing around at the moment for a 2.5KW machine, for the life of me i can't understand why the huge differences in prices?

clearly, you have experience in this field any chance you could shed some light on this

many thanks in advance
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31-03-2009, 16:12   #17
Doctor_L
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Why the different prices

I can't really explain why turbines are prices are so varied. My gut feeling is that it is a combination of several factors.

  • Like any business some products have the brand name/reputation priced into the product.
  • The components and the quality of build i.e. the heavier and more rugged the turbine the bigger the price.
  • Research and Development costs have to be recouped.
  • Warranties on blades and components etc e.g. I paid a slight bit more for solar panels that had a 10 yr warranty

I would try and be objective in the comparison. I would use the following features to guide me.

1- Diameter of blades. Bigger the diameter, the larger the wind swept area.
2 - Weight of turbine
3 - Design of turbine does it cut out at high speeds or does it continue operation.
4 - At what speed m/s was it rated at 2.5 kw.A turbine rated at 12 m/s is different to a turbine rated at 9 or 10 m/s. If turbine A is rated at 13 m/s and turbine B is rated at 9 m/s, turbine A will generate less power at 6 m/s than turbine B.
5 - A what speed does the inverter kick in and generate power i.e. does it generate power at low wind speeds?
6 - Estimated output at 3,4,5,6,7,8,9 m/s. The majority of wind at my house would fall in the 3 - 6 m/s range.
7 - Price of turbine, tower, inverter, installation and grid tie cost
8 - Warranties on blades, tower etc. Remember your turbine needs to be operational for at least 15 - 20 years.
9 - Type of tower tied or monopole
10 - How do you raise lower the tower, hydruallic/crane etc
11 - Service cost per year (approx)
12 - Customer support, is there some one who can get to your site next day to address an issue.
13 - Do you need to oil/grease the turbine on an annual basis.
14 - Do they have any data on noise

Before you buy you should go and see them in operation, and talk to the owners.

The true acid test for any turbine is to record your wind speeds for 1 year and use wind swept area calculations (which uses the diameter) to calculate the number of kw hrs the turbine would generate in 1 year. This will give you a good idea on estimated pay back period.

At the moment I would sooner buy an affordable 2.5 kw turbine than an expensive 6 kw turbine as I feel they blend better in urban/rural areas and offer a realistic pay back period. Smaller blades also mean that the bottom of the blade has a better probabilty of being taller than the nearest obstacle.

Regards

Liam
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01-04-2009, 09:32   #18
bladespin
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You missed one point Liam, the majority of windturbines on the market are not made here, they're are either imported and rebranded or they are sold through agents both of which add margin to the product.
Many agents are receiving at least 30%+ as commission and usually a seperate payment for delivery and installation which adds cost to the turbin; take a base price of about €14k add in 30% (€4.2k) and the price jumps up considerably.
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01-04-2009, 11:18   #19
De_man
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thanks liam & Bladespin for the input, i certainly agree with your points liam
but as bladespin pointed out high commission costs etc, i know people have
to live

but i must do more research on these chinese machines afterall a lot of the components on "western" turbines are made in the east.

i particularly like the skystream product, but at the moment i simply can't justify the price & payback period, will have to wait until prices come down to some normality. i'd love to be able to shell out the money but i simply can't afford it at the moment

brings back memories....the family used a windmill to pump water to our old home place until they got water mains
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27-04-2009, 14:08   #20
Doctor_L
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Wind Turbine payback calculator for an irish back garden

Hi,

I have finished measuring wind speed for a year the following article outlines the pay back.

http://www.irishsilicon.com/2009/04/...lculato-1.html

Regards

Liam
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22-06-2009, 11:27   #21
 
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Can i ask why the ESB have capped the out put for domestic wind turbines to 5kw,s when you tweek the electronics you can get 9Kw,s out of them, Or add a extra poles.

Is it because they dont want you to be totally off grid and they would have to pay you a check for your turbine supplying the grid.

I thought the esb were going green so to speak or is this all bull.
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23-06-2009, 11:25   #22
bladespin
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Originally Posted by Kippure View Post
Can i ask why the ESB have capped the out put for domestic wind turbines to 5kw,s when you tweek the electronics you can get 9Kw,s out of them, Or add a extra poles.

Is it because they dont want you to be totally off grid and they would have to pay you a check for your turbine supplying the grid.

I thought the esb were going green so to speak or is this all bull.

A turbine rated above 6kw would be considered a commercial installation, the ESB will still allow connection, you just have to apply for a different (non domestic) connection.

In Fairness the ESB has given it's support to microgeneration and sustainable living so I don't understand your question above unless you're referring to windfarming.
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25-06-2009, 02:40   #23
richiekilkelly
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Wizzmill turbine

Hello, has anybody installed a wizzmill turbine, if so does it do what it says on the tin? http://www.wizzmill.ie thanks.
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25-06-2009, 10:18   #24
Doctor_L
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No it doesn't

See my article about this product.

The claims are very dubious.

http://www.irishsilicon.com/2009/06/...heir-turb.html

Liam
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25-06-2009, 10:32   #25
 
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No, it doesn't

Quote:
Originally Posted by richiekilkelly View Post
does it do what it says on the tin?
This is so much cowbreath.

It's a 1.8m diameter rotor. Lets be generous and say that it's 45% efficient giving it about 3 times the industry average for a turbine of this size. Then let's say it's on a fantastically windy site with Weibull factors 1.9 & 6.5 (like a southwest facing clifftop near the sea). The annual output would be just below 1700kWh.

So, let's also assume that all of this is used on-site, with 100% efficiency, saving 19c/kWh, so the annual saving is 323 euro. The basic DIY kit costs 1,950, even if you can claim the VAT back, so the payback period under this rose-tinted scenario is six years minimum, not the 2-3 years claimed.

Under any sort of realistic scenario, it's more likey to be 24 years, and that's if the equipment survives that long with zero maintenance.

Get real, and stop damaging the credibility of the industry.

Cheeble-eers

And by the way, don't ever install a turbine on the gable end of a building without having a structural survey done. Daventry Town Hall in the UK did, and regretted it, "Structural damage to the gable end of this building is suspected to have been caused by the wind turbine and it was removed on 27th May 2008".

Last edited by Cheeble; 25-06-2009 at 10:42. Reason: Caution about gable end mounting
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25-06-2009, 21:48   #26
richiekilkelly
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Thanks for that guys what you say adds up, however I have seen it in operation today at their office and for the short length I was ther it seemed to work ok heatig a 100 litre cylinder, good wind today though.
Think I will take the plunge and monitor it with wind speeds to give you an accurate output.
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25-06-2009, 22:05   #27
gman2k
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Quote:
Originally Posted by richiekilkelly View Post
Thanks for that guys what you say adds up, however I have seen it in operation today at their office and for the short length I was ther it seemed to work ok heatig a 100 litre cylinder, good wind today though.
Think I will take the plunge and monitor it with wind speeds to give you an accurate output.
You do that -new poster-, come on here, ask for advice about a named product/company - which people have proved to be putting out <ahem> dubious info. I hope the plunge goes well
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25-06-2009, 22:33   #28
 
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Does it make sense

Based on research and the above posts why is anyone considering wind turbines in the Republic. The cost and wind profiles of most sites makes it a nice idea but dosen't make financial sense.
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25-06-2009, 22:39   #29
richiekilkelly
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The wizzmill is €1950 + Vat which is not bad if it only does half of what they say it will do. If I came across a 2.5kW grid tied turbine for around €5k I would buy it straight away.
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26-06-2009, 13:42   #30
 
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Quote:
Originally Posted by richiekilkelly View Post
The wizzmill is €1950 + Vat which is not bad if it only does half of what they say it will do. If I came across a 2.5kW grid tied turbine for around €5k I would buy it straight away.
It really is a damning indictement of the state of the industry when we say something is "not bad" for doing only half of what the manufacturers claim it will do.

Cheeble-eers
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