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Is solar cells a good idea?


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Is it a good idea to install solar cells?  It will certainly help the climate. The repayment price depends on how big your consumption is. And yes, it would help if the government were more positive over for those people there like to fight climate change.

 

Price example:

On the grid, no batteries.

Total cost of installation of 20 solar panels each 330 watts, it will cost you approx. 220.000 Bahts.  

They will together in average produce per day net. 33 kw. In one month, it will produce about 1000 kw. Price saved 4.17 * 1.000 = 4.170 Bahts pr. Month. * 12 = in one year saved 50.000 Bahts.  Approx. 4,7 years = saved cost price 220.000 Bahts

After 4.7 years it is free electricity in the day time at least.

 

Example:

On the grid, no batteries.

Total cost of installation of 10 solar panels each 330 watts, it will cost you approx. 140.000 Bahts.  

They will together in average produce per day net. 16.5 kw. In one month, it will produce about 500 kw. Price saved 4.17 * 500 = 2.085 Bahts pr. Month. * 12 = in one year saved 25.000 Bahts.  Approx. 5.6 years = saved cost price 140.000 Bahts

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@Misab I think you may be over-estimating how much juice you would get from your panels.   We have a system with 18 panels, 5.8kW installed solar power. The BEST day we've had this year was

'switch that bloody light off'   Were you an ARP warden during the Second World War?

The problem is that in order to go fully legal the costs and hoops to be jumped are punitive, that coupled with the rather poor feed-in tariff means that most just don't bother.   Grid power

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Sure it´s a good Idea, but probably not as good as you seem to believe it is. You also have to calculate with broken cells and repair cost as well as a few changes during the years.

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11 hours ago, Misab said:

Total cost of installation of 20 solar panels each 330 watts, it will cost you approx. 220.000 Bahts.

 

They will together in average produce per day net. 33 kw. In one month, it will produce about 1000 kw

I have 5 x330w panels up so far.

 

My last 3x 330w solar panels were 2,800bht each ......... 20 would have cost 56,000bht.

Are you looking at current prices?

 

My panels produce 1KWHr each per day, most of the year (last month and this were lower due to monsoon).

I'd reduce your predictions to 20Kwhr/day.

23rd today, and I've generated 100Kwhr from my 5 panels this month (4 units/day), torrential rain many days.

Last year August and September weren't like this, it's been an unusually wet and stormy monsoon this year.

 

Wondering why you would make such a post when you clearly have no experience with solar panels.

Crossy and I have been playing this game over a year now, and your figures just don't add up.

Edited by BritManToo
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In my view, solar tech just isnt a viable option or worth the outlay unless one lives so far from the grid that it would cost a fortune to get power to a property, and even then, just enough solar power and batteries to run lighting and the strict basics. A supplemental diesel geneset for nights and aircon use would probably be more reliable and cheaper. 

 

Theres a thai guy near me that has a house in this situation. Hes got over 350k in solar and barely can run his house and a 9k BTU aircon. 

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2 minutes ago, Crossy said:

@Mama Noodle I would agree if you are attempting to replace grid power when it's avaliable.

 

What most of us are doing is using solar to supplement grid power by going grid-tied.

 

Even a couple of panels and a 600W micro-inverter will generate around 2 units per day which you don't have to pay MEA/PEA for 🙂 

 

I know, but in your case for example, your best day was 31 units, youre a professional and DIY'd it and can manage and repair it, so maybe not too bad, but for the average joe is it really worth the outlay for 31 units? 

 

Probably not, from a practical standpoint.

 

Not hating on the people who do it, Ive thought about it myself purely from a hobby perspective. 

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2 hours ago, Crossy said:

but unless the meter reader sees it ... (and we have mitigation methods in place so he doesn't)

curiousity killed the expat....can explain ?

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Less than 15k Baht (4 panels and a baby inverter) and you're generating useful power.

 

At 4 units a day @ 4.5 Baht that makes payback about 2.5 years.

 

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