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Solar power is it worth it

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8 hours ago, Yellowtail said:

 

For example?

Makro, Homepro, BigC, Tesco, CP Land are amongst the well known brands. There's tons and tons of factories that you never heard of but do it purely out of investment as they don't have retail customers there who could see it. My local Homepro in Phuket has a 1 Megawatt solar system on their roof. They don't publish the fact nor is it visible if you go there. But easily to be seen via google maps.

 

7 hours ago, BritManToo said:

Where are the photos of your home system?

It's almost as if you're a salesman and not an enthusiast.

Pics or it didn't happen? Fair enough 🙂

See attached image below. It's from a property I built in Khon Kaen. The grey box houses the Growatt inverter. Also attaching a graph from the 12th which was a really really nice day as you can see on the smooth curve.

 

For the record: I never sold a solar system in my life nor do I have an interest in a company that does but I have dealth with commercial sized installations in another capacity. So I got nothing to pitch or sell here. But I strongly believe that solar is indeed a very good thing for consumers because of the savings and being environmentally friendly. Especially coming from a country which relied way too much on coal power (Germany).

 

7 hours ago, pineapple01 said:

Getting into waffle talk ,Corporations, primary investment, jeez yer cant save much here cause Electrics cheap,not one mention about bird poop cleaning or everyday downsides

 

Uhm I'm trying to bring facts and explain how the numbers work out. I think you are doing the waffle talk? You have to clean these panels 2-4 times a year. Of course depends on how much dust you have in your area. Pretty easy to clean unless you are not able to go on the roof, but then just ask someone who can for 300 baht.

 

 

 

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Screen Shot 2020-05-15 at 15.11.28.png

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Mine needed cleaning much more. Pigeons from Rice Fields and Local Wats n Woodlands. Every week they coated it.

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Posted (edited)
Just now, pineapple01 said:

Mine needed cleaning much more. Pigeons from Rice Fields and Local Wats n Woodlands. Every week they coated it.

Me too, every month at least.

No need to clean imaginary panels though.

Edited by BritManToo
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@eisfeld thanks for that.

Your 12 * 300W panels have peak output of about 2,750W. What was the energy output for that day (kWh)?

 

Our 8 * 300W panels are peaking at about 1,750W so similar peak output per panel.

 

The 12th was a bit of a lumpy day but we did get 10.35 kWh at the grid. Sadly offset by the 5.35 kWh we got on the 14th 😞

 

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1 hour ago, pineapple01 said:

Mine needed cleaning much more. Pigeons from Rice Fields and Local Wats n Woodlands. Every week they coated it.

Yes there are definitely areas where solar can make no sense. Very dusty area, area with tons and tons of rain or if you have a pigeon plague. My system has been running since August last year and actually has only been cleaned once since afaik (unless someone from the family took matters into their own hands). But I've recently seen a factory which due to their business nature has quite a bit of dust and there it's not clear if solar can make economic sense. Always a case by case basis.

 

1 minute ago, Crossy said:

@eisfeld thanks for that. Your 12 * 300W panels peak out put of about 2,750W. What was the energy output for that day (kWh)?

 

Our 8 * 300W panels are peaking at about 1,700W so similar peak output per panel.

The energy output was 20.3 kWh for that day.

 

Now that you mentioned it I was curious why the graph looked so nice for that day but the peak could have been higher. It's a 3.6kW inverter and nearly 4kW in panels. There are days where the system achieves it during peak time. Must have been no clouds but maybe still some air polution. Not sure. Here a graph from another day which had clouds and a bit rain but you can see a much higher peak.

 

Screen Shot 2020-05-15 at 16.48.43.png

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On 5/13/2020 at 7:12 PM, Arjen said:

Do you use a centrifigul blower for that?, they give a very high air output, against reasonable electricity costs. But in my experience they heat the output air easy to 80-90 degrees. We used them to dry metal sheets after processing. First we thought about the need of installing heaters. But heaters where not needed. The output air is close enough to the temp from boiling water. Together with the enormous airflow, everything is dried. 

 

I have not dissembled the Energy Recovery Ventilator, so cannot comment on it's fan. We did test the ERV before piping it is and it did not heat the air. To be honest we do not use it very often. It part of the future proofing of the house. The door to the third floor acts like a chimney drawing hot air up and out of the house. The wind on the third floor always blows due to the venturi effect helping with the efficiency of the chimney.

 

 

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19 minutes ago, Bandersnatch said:

I have designed the house to have different spaces. My cinema, like most, does not have windows or fresh air. Likewise my bedroom is design to be dark and cool. I have more usable outdoor space than most houses I have seen in Thailand. If you have more, please post the pictures.

 

The north side of the property has 85m2 of covered outdoor space

 

img_20190408_151819.jpg?w=800

 

The third floor has 80m2 with a 360 view

 

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img_20190513_173536.jpg?w=800

Yes indeed the third floor is my favourite part to be honest the rest kinda looks like a prison....lol

if that’s what you like fair enough.

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On 5/13/2020 at 11:17 PM, eisfeld said:

I disagree with the placement of his panels, I think he could get more out of them by not putting any on the north facing side but the rest was very impressive.

 

I explained in detail in my blog why I chose to put solar on all 4 sides of my house. See https://ecohousethailand.com/design-criteria/

 

tracker.jpg?w=768

Dual Axis Tracker systems can increase production by 40%, but such systems are complex and expensive and with falling solar panel prices it is cheaper to just get more panels.

 

Basically I don't need more power, but I need to extend the hours when the solar is producing and so reducing the hours that the house is running off batteries.  Living close to the equator as we do, North facing panels produce power for much of the day, but more crucially, they are producing at the beginning and end of the day. I am getting power at 6am. 

 

Unfortunately I do not have stats to share currently as there is a problem with the external data module that came with the inverter.

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20 minutes ago, Bandersnatch said:

I am sorry you do not believe me. I am attaching a recent bill which basically says - as your meter has not moved in the month we think it is broken! 

I believe you, Lol at the bill!

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9 minutes ago, Bandersnatch said:

Living close to the equator as we do, North facing panels produce power for much of the day, but more crucially, they are producing at the beginning and end of the day. I am getting power at 6am. 

I've got mine mounted flat.

Seems to work, although some people pooh pooh the idea.

 

IMG_20200516_133606.jpg

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8 minutes ago, Bandersnatch said:

I was actually going for the fortress look, but at least it will be cool prison and it will keep the zombies out.

 

I did think Fort Knox, is the basement full of bullion? Interesting concept, it doesn't float my boat but we all have different tastes.

 

Our home is discussed at length in another thread, but here's a taster, solar is on the car-port right of frame.

 

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