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Opinions please on me putting a 2.5kW roof mounted turbine on my garage - am I mad?

 
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Wind Generation
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 Marvinator80
(@marvinator80)
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Topic starter 14/08/2024 8:32 pm  

 

IMG 3290

Hi folks. I have ASHP, Solar PV (5.46kW) and a 10kW battery set up. I’m thinking of putting a 2.5kW roof mounted turbine on my garage. 

the garage houses the PV, Battery and Inverter already. 

wind speed per second for my location is an average of 6. 

my thinking is that it would be beneficial for an outlay of circa £3k because although 2.5kW isn’t huge it at least still produces at night and certainly through the winter months. 

I’m thinking this could significantly offset the cost of running the ASHP and would make its money back in about 6 years. 

I would put it on the back end of here. 

Am I deluded?

This topic was modified 8 months ago by Mars

   
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Mars
 Mars
(@editor)
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Joined: 4 years ago
Posts: 3113
14/08/2024 9:19 pm  

I don’t think you’re mad. If you can afford it, and you have a property where you can add a wind turbine, that alone usually trumps an immediate RoI. I’d like to know more about the turbine you’re thinking of putting in.

@transparent knows a thing or two about turbines.

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 Marvinator80
(@marvinator80)
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Topic starter 14/08/2024 9:31 pm  

@editor I’m researching models at the moment Mars, it’s not easy or obvious so far. 

in terms of the cost, ScotGov offer a £2500 interest free loan, but no grants at the moment. 

im thinking for £20 per month over 10 years it merits serious consideration. The price of a mobile sim contract really.


   
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 Derek M
(@derek-m)
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14/08/2024 9:44 pm  

@marvinator80

I don't know about the rules in Scotland, but I think that planning permission would be required since you also have a heat pump.


   
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Mars
 Mars
(@editor)
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14/08/2024 9:47 pm  

Posted by: @marvinator80
↑

I’m researching models at the moment Mars, it’s not easy or obvious so far. 

Yeah, I know. It’s not a massive market so really interested to see what you discover.

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 Marvinator80
(@marvinator80)
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Joined: 2 years ago
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Topic starter 14/08/2024 10:24 pm  

@derek-m I’ve seen that quoted but I think it might be a widely circulated error. Will check with planning though if I can find a model to move forward with.


   
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 Johnmo
(@johnmo)
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14/08/2024 10:41 pm  

Posted by: @marvinator80
↑

I’ve seen that quoted but I think it might be a widely circulated error.

If you check permitted development rules for Scotland you can ASHP x1 and a Micro Wind Turbine on a site without planning. 

6.21 This provides potential opportunities for one MWT and one ASHP within the same curtilage, but not more than one of each using permitted development rights. For example, this would allow for a wind turbine to provide the electricity to power a heat pump.

When looking at turbines make sure you take in to account

Different outputs at different wind speeds not just the average.

Building effect on output - which be very dramatic unless many metres above the building, due to turbulence

 

Maxa i32V5 6kW ASHP (heat and cooling)
6.5kW PV
13.5kW GivEnergy AIO Battery.


   
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 Marvinator80
(@marvinator80)
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Topic starter 14/08/2024 10:46 pm  

Posted by: @johnmo
↑

Posted by: @marvinator80
↑

I’ve seen that quoted but I think it might be a widely circulated error.

If you check permitted development rules for Scotland you can ASHP x1 or Wind Turbine on a site without planning. If you want both it is no longer permitted development.

When looking at turbines make sure you take in to account

Different outputs at different wind speeds not just the average.

Building effect on output - which be very dramatic unless many metres above the building, due to turbulence

 

yeah, I will definitely talk to planning if I can find a viable system. 

why do you think they restrict it in that way. How does having a ASHP make them require planning for a small roof mounted turbine?

 


   
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 Johnmo
(@johnmo)
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14/08/2024 10:47 pm  

Just amended my response

Maxa i32V5 6kW ASHP (heat and cooling)
6.5kW PV
13.5kW GivEnergy AIO Battery.


   
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 IanMK13
(@ianmk13)
Reputable Member Member
Joined: 2 years ago
Posts: 194
15/08/2024 10:34 am  

This may be of interest:

Is It Worth Adding a Wind Turbine to Your Home Solar Installation?


   
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Transparent
 Transparent
(@transparent)
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15/08/2024 10:50 am  

Interesting notion @marvinator80 

In case you were wondering, here's how I would apply a mechanical lever to the wall of your garage in order to shake the bricks apart:

WallMountings

Better still, I could achieve the damage much faster if I used a varying force at the top of the pole.
Instead of it always being applied in the same direction, I would vibrate it randomly around the horizontal plane.
At some point in time it might even achieve resonance with the length of the pole above the upper bracket, which would amplify my efforts.

The foregoing explanation is based on a true story...

... which happened so often that the major UK company who developed 1kW wall-mounted wind-turbine lost their sales deal with B&Q.

 

Alternatively you could use a ground-mount tower.

Here's one I built using a triangular aluminium lighting truss which was being offered by the liquidator of a night-club that had closed down.

TurbineA

The horizontal pole close to the bottom is called the jack-stay.

You attach a rope to that in order to raise and lower the tower around the bearings at the base.

Some people then remove the jack-stay.
I decided to leave mine in place, which adds to the rigidity of the mechanism.

Save energy... recycle electrons!


   
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 Marvinator80
(@marvinator80)
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Joined: 2 years ago
Posts: 197
Topic starter 15/08/2024 12:18 pm  

Some bleak assessments there! 😆

Hence the question - am I mad?


   
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