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Author Topic: Home Solar Upgrade Day 1  (Read 28121 times)

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Offline Bandersnatch

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Home Solar Upgrade Day 1
« on: October 26, 2021, 07:19:19 PM »
Day 1 on my Home Solar Upgrade adding 10 x 535 Watt solar panels to the roof of the third floor of my house.


https://youtu.be/_kg5wpByrgs

Offline iammike

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Re: Home Solar Upgrade Day 1
« Reply #1 on: October 27, 2021, 08:17:55 AM »
Interesting. Thx, will be most certainly following your progress as I (a long time already) intend to get Solar also as I have lots of Roof Space (1x Garage approx 40sqm 1x my water storage "shed" (approx 100+ Sqm) and our house (approx 150+ Sqm).

Question please

Do you have a SMART PEA meter or are your producing Electric via Solar and the meter is running backwards?

TiA

Offline Bandersnatch

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Re: Home Solar Upgrade Day 1
« Reply #2 on: October 27, 2021, 09:07:42 AM »

"meter is running backwards" - I have seen many times online comments like "I have a mate who has solar and he runs the meter backwards and PEA Nakon Nowhere are fine about it"

It is is true that many PEA offices are unsure about their own rules regarding solar, but you cannot run your meter backward - it is feeding power back into the grid. When PEA power down for repairs the line will still be live.

The "Rooftop Solar" feed-in program pays 2.2 Baht per kWh compared to 4 Baht that you buy power for. Why would PEA only pay 2.2 Baht per kWh for an approved scheme and yet allow people to run the meter backwards and get 4 Baht per kWh.

I did not go for The "Rooftop Solar" feed-in program as it has too many restrictions the main one being a 5kW cap for a single phase setup like mine.

I have a solar meter that cannot be turned backwards or accept power back into the grid.

Offline ChuckNorris

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Re: Home Solar Upgrade Day 1
« Reply #3 on: October 27, 2021, 02:32:21 PM »

"meter is running backwards" - I have seen many times online comments like "I have a mate who has solar and he runs the meter backwards and PEA Nakon Nowhere are fine about it"

It is is true that many PEA offices are unsure about their own rules regarding solar, but you cannot run your meter backward - it is feeding power back into the grid. When PEA power down for repairs the line will still be live.

The "Rooftop Solar" feed-in program pays 2.2 Baht per kWh compared to 4 Baht that you buy power for. Why would PEA only pay 2.2 Baht per kWh for an approved scheme and yet allow people to run the meter backwards and get 4 Baht per kWh.

I did not go for The "Rooftop Solar" feed-in program as it has too many restrictions the main one being a 5kW cap for a single phase setup like mine.

I have a solar meter that cannot be turned backwards or accept power back into the grid.

Sorry for being thick but, are you saying that you cannot get money off your electricity bill unless you enrol in the "Rooftop solar" scheme? How about these guys that say their meter is going backwards. They must be watching it. Are you saying they are getting nothing for it?

You say that solar will send power back to the grid, the meter is running backwards but PEA are not paying anything. I am interested in solar power and kindly ask if you could simplify your explanation of what happens. Thanks for helping a novice in these matters.

Offline iammike

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Re: Home Solar Upgrade Day 1
« Reply #4 on: October 27, 2021, 03:46:21 PM »

"meter is running backwards" - I have seen many times online comments like "I have a mate who has solar and he runs the meter backwards and PEA Nakon Nowhere are fine about it"

It is is true that many PEA offices are unsure about their own rules regarding solar, but you cannot run your meter backward - it is feeding power back into the grid. When PEA power down for repairs the line will still be live.

The "Rooftop Solar" feed-in program pays 2.2 Baht per kWh compared to 4 Baht that you buy power for. Why would PEA only pay 2.2 Baht per kWh for an approved scheme and yet allow people to run the meter backwards and get 4 Baht per kWh.

I did not go for The "Rooftop Solar" feed-in program as it has too many restrictions the main one being a 5kW cap for a single phase setup like mine.

I have a solar meter that cannot be turned backwards or accept power back into the grid.

Sorry that I asked! 

I have no idea about this, I was just thinking of (MAYBE) going solar!

The only solar we have is for our Well pump and (maybe) thought of expanding that!
« Last Edit: October 27, 2021, 03:48:46 PM by iammike »

Offline Bandersnatch

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Re: Home Solar Upgrade Day 1
« Reply #5 on: October 27, 2021, 04:28:47 PM »
@ChuckNorris
You cannot get paid for selling electricity back to PEA unless you are in the "Rooftop solar" scheme

Some people try to feed back their excess solar which for a normal meter will spin it backwards, which is both illegal and dangerous. PEA came to check my system to make sure I wasn't trying to spin my meter backwards.

The legal way is to produce some of your own power from solar and so reduce the amount you have to buy from PEA.

The cheapest entry into solar would be a system with no batteries that covers say 80% of daytime usage with solar panels. 1 unit of electricity (1 kilowatt hour) costs 4 Baht. If you installed 1kW of solar panels and the sun shines for 8 hours a day that would save you 32 Baht per day. So for every kW of solar you have you are saving 1,000 Baht per month of your PEA bill

Solar panels cost about 10 Baht per watt. Inverters cost about 10,000 Baht per kilowatt  - hope that is clear enough




Offline Bandersnatch

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Re: Home Solar Upgrade Day 1
« Reply #6 on: October 27, 2021, 04:32:15 PM »
@iammike I am happy to answer questions about solar. If I am not making it clear enough, please feel free to seek further clarification.

Offline ChuckNorris

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Re: Home Solar Upgrade Day 1
« Reply #7 on: October 27, 2021, 04:35:42 PM »
@ChuckNorris
You cannot get paid for selling electricity back to PEA unless you are in the "Rooftop solar" scheme

Some people try to feed back their excess solar which for a normal meter will spin it backwards, which is both illegal and dangerous. PEA came to check my system to make sure I wasn't trying to spin my meter backwards.

The legal way is to produce some of your own power from solar and so reduce the amount you have to buy from PEA.

The cheapest entry into solar would be a system with no batteries that covers say 80% of daytime usage with solar panels. 1 unit of electricity (1 kilowatt hour) costs 4 Baht. If you installed 1kW of solar panels and the sun shines for 8 hours a day that would save you 32 Baht per day. So for every kW of solar you have you are saving 1,000 Baht per month of your PEA bill

Solar panels cost about 10 Baht per watt. Inverters cost about 10,000 Baht per kilowatt  - hope that is clear enough

Thanks. I'm getting there. thumbup

Offline fishy

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Re: Home Solar Upgrade Day 1
« Reply #8 on: October 28, 2021, 12:16:21 PM »
@Bandersnatch PEA Korat where meant to come yesterday to do our "Rooftop Solar Scheme" Inspection but never showed. Has been 10 months now waiting for the "Smart Meter"!!! You mention a 5 kw cap restriction put you off joining the scheme. I have not heard of that restriction and I'm sure PEA know our system is 10Kw??

In event of a blackout or grey-out inverters are designed to shut down automatically and stop power export to the grid so as you do not electrocute the sparky working on the power lines downstream.

Hopefully on the 7th of next month I will have 15kwh of batteries and a "Back up Box" (separate fuse board for essential appliances) installed. In this case the Inverter will still continue to power the essential appliances and charge the batteries but not export back to the power grid.     

 

Offline Bandersnatch

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Re: Home Solar Upgrade Day 1
« Reply #9 on: October 29, 2021, 07:01:45 AM »
@fishy

I would not claim to be an expert of the "Rooftop Solar" program  - I investigated it 3 years ago and I am sure it have changed since then. At the time the feed in tariff was 1.68 Baht/KWh but as so few people had signed up for it (They had targets to meet) they raised it to 2.2 Baht.

The solar team from PEA Korat are definitely the experts in the region and were streets ahead of PEA Surin. They did a site visit and signed off my system as safe.



Offline Bandersnatch

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Re: Home Solar Upgrade Day 1
« Reply #10 on: October 29, 2021, 07:02:46 AM »

Offline fishy

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Re: Home Solar Upgrade Day 1
« Reply #11 on: October 29, 2021, 02:02:54 PM »
Love your work... Keep it up

Offline Bandersnatch

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Re: Home Solar Upgrade Day 1
« Reply #12 on: October 30, 2021, 06:47:36 AM »

Offline Bandersnatch

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Re: Home Solar Upgrade Day 1
« Reply #13 on: October 31, 2021, 07:15:39 PM »

It's up and running now. Some final configuration still to do, so will post a final video in a few days.



Offline fishy

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Re: Home Solar Upgrade Day 1
« Reply #14 on: October 31, 2021, 10:00:25 PM »
Very Nice.... Looks like every inverter has a its own "Dongle" to communicate between each other via WIFI rather than through cable.

 

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