Domestic solar system

[Coolcats]

There's a guy on you tube Robert Murray-Smith that does a lot of experiments and designs from rocket stoves to wind turbines, including 3D printing his own! He really is worth a watch.

I'm not convinced domestic wind power is a cost effective 'project', but as a project it doesn't need to be! Good luck and keep us informed!

Thank you for this, will have a peak at you tube. Until I get the anemometer up to measure the wind speed I won’t know if I will take it further, but it is also just to supplement the solar, even at 300w that’s enough to keep the house ticking over, strangely enough the inverter is reporting I am using about 315w right now, normally at night the house consumes around 250-280 w

 

[Bolti]

300w is the max output, does it mention in the manufactures literature the wind speed necessary to achieve this. Or if too much wind cuts production.

 

[Coolcats]

300w is the max output, does it mention in the manufactures literature the wind speed necessary to achieve this. Or if too much wind cuts production.

This is the detail to be explored,

I have a couple of friends who have attempted similar in terms of wind generation, they chose cheapish Chinese wind turbines, the first one in the words of Space X had an unscheduled disassembly the blades became detached from the rotor and stuck in his roof, the other only seemed to work in high winds and created a heck of a noise when spinning.

 

[MisterB]

This is the detail to be explored,

I have a couple of friends who have attempted similar in terms of wind generation, they chose cheapish Chinese wind turbines, the first one in the words of Space X had an unscheduled disassembly the blades became detached from the rotor and stuck in his roof, the other only seemed to work in high winds and created a heck of a noise when spinning.

Not a great fan then (can be read different ways!!)???

 

[Raul]

I’m no fan of vertical axis, and turbulent wind is not that productive. You need to get high for good wind, maybe on a farm with lots of space.

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[MisterB]

There are some interesting new designs out there ... I'm still not convinced it's cost effective on a small domestic scale, but who knows where we will be in ten years time?

Raul
dunnah01
mikebeaches

Any views on grade B batteries for a home battery build? They produce the same output (or pretty damn close) and carry the same guarantee I believe, but are priced a lot less?

 

[mikebeaches]

I am toying with the idea of one of these, I am going to stick up an anemometer to measure wind speed and if looks like it works then it should help at

Interesting, though as others have suggested, it's difficult to assess how viable it might be?

The idea of generating some electricity when there is little or no sunshine, is appealing, even if it's likely to be only a modest amount.

But on the other hand, you need to be in the right sort of location, exposed to suitable winds.

Personally, we don't really have anywhere to install one. But good luck if you decide to give it a punt. Keep us posted!

 

[Coolcats]

Interesting, though as others have suggested, it's difficult to assess how viable it might be?

The idea of generating some electricity when there is little or no sunshine, is appealing, even if it's likely to be only a modest amount.

But on the other hand, you need to be in the right sort of location, exposed to suitable winds.

Personally, we don't really have anywhere to install one. But good luck if you decide to give it a punt. Keep us posted!

It's an interesting one, the first practical step is to get an anemometer up and record the wind speed over x time predominantly over the winter months and then take a view based on manufactures prediction/performance.

I have no idea if its worth doing but the anemometer is defiantly a first step.

 

[Raul]

There are some interesting new designs out there ... I'm still not convinced it's cost effective on a small domestic scale, but who knows where we will be in ten years time?

Raul
dunnah01
mikebeaches

Any views on grade B batteries for a home battery build? They produce the same output (or pretty damn close) and carry the same guarantee I believe, but are priced a lot less?

I have nothing against the B grade from fogstar, saying that, its only 10 quid difference now the A grade are 130. I just got some, and 15% discount on bms.

 

[Bessy765]

that seems like a more realistic set of figures and components. have you any performance results you are happy to share?

Chart on the left is this months production have only used 2 units from the grid when I used more than the inverter output. Chart on right is the output from October 2022 less out of action for four weeks in April owing to software fault and we were away so no access. Ended up with 2 x 5.8 kw triple power batteries.

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[Revolvor]

Last year I was looking into adding batteries to my existing Solar Panels.

Using my (very limited) knowledge gained from the MH Fun forum, I put together the attached system diagram, and sent it to a couple of suppliers. I included a requrement to be able to use my generator, but that was not part of the quote.

I have attached the best quote that I received to supply (not install) the equipment - almost certainly more now. I was suprised how much was involved.

In the end, after discussing with various unhelpful electricians, I decided it was beyond my abilities to install it myself, and get it certified.

 

[Raul]

Last year I was looking into adding batteries to my existing Solar Panels.

Using my (very limited) knowledge gained from the MH Fun forum, I put together the attached system diagram, and sent it to a couple of suppliers. I included a requrement to be able to use my generator, but that was not part of the quote.

I have attached the best quote that I received to supply (not install) the equipment - almost certainly more now. I was suprised how much was involved.

In the end, after discussing with various unhelpful electricians, I decided it was beyond my abilities to install it myself, and get it certified.


View attachment 776098

Be careful, multiplus 2 48/5000, it’s not yet certified for new UK grid regulations. Lots of ppl scratching their heads as already committed and installed it.
Have a look on victron life forum, and monitor when this will pass, so far I think had 3 amendments and still not passed accreditation.
Maybe a existing install may be a way round it, you have to consult with the grid ppl and see what they ask for. The G100 applications are very complicated.
There’s always sunny island instead the multiplus.

 

[MisterB]

Finally got time to sort things out with my Sofar ME3000SP and my Seplos 14.3kw upright battery ! Hopefully I've now sorted it!

 

[Bolti]

I have just submitted a G99 fast track application to my DNO to add a battery and AC coupled inverter to my solar system, has anyone else been through this process?
On the information section it says with 28 days of commissioning the system I have to forward G100 compliance sheets but I am confused as what these are, can anyone help.

 

[MisterB]

Even better result, showing that the battery is supplying energy to supplement the solar, so I'm using free energy that I harvested earlier !

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[Raul]

I have just submitted a G99 fast track application to my DNO to add a battery and AC coupled inverter to my solar system, has anyone else been through this process?
On the information section it says with 28 days of commissioning the system I have to forward G100 compliance sheets but I am confused as what these are, can anyone help.

It needs testing I think by a MCS registered electrician, then all the test results filled in the G100. I hope your inverter is on the approved list for the G100 requirements. You need to demonstrate G100 compliance. The G100 I think is only needed if a grid tie has a battery, and based on your G99 export allowance. It used to be allot easier before the G100 requirement.

 

[Bolti]

It needs testing I think by a MCS registered electrician, then all the test results filled in the G100. I hope your inverter is on the approved list for the G100 requirements. You need to demonstrate G100 compliance. The G100 I think is only needed if a grid tie has a battery, and based on your G99 export allowance. It used to be allot easier before the G100 requirement.

It must be easier than that, as anyone that fits a battery is required to notify the DNO.

 

[Raul]

It must be easier than that, as anyone that fits a battery is required to notify the DNO.

I haven’t done one in UK since a year before the pandemic. From what I know regs have changed since then, when you add a battery you have to demonstrate that you can’t export from battery as well as generation. If your grid tie was approved for 16A and you add battery, you have a potential to exceed that. Hence means of restricting max exporting power. I’m not up to date for today’s requirements, I think a MCS guy will be better bet, even for info.

 

[EuroTrotters]

This place has a big wind turbine

Ingleborough | Crina Bottom - Offgrid Mountain Escape in the Yorkshire Dales National Park | Ingleton

Crina Bottom Bed & Breakfast is a truly unique, remote getaway. Situated on the flanks of Ingleborough, (Yorkshire 3 Peaks), the views are breath taking! We are totally off grid, this doesn’t mean we compromise on life’s luxuries and comforts, but there’s a real sense of getting away from it all

www.crinabottom.co.uk

 

[MisterB]

The approved list is here

www.ena-eng.org/gen-ttr/

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[Bolti]

The approved list is here

www.ena-eng.org/gen-ttr/

Fortunately the inverter I have chosen is on the approved list, though I haven't yet bought anything.