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Since my retirement and spending more time at home during the day, have thought of Solar Panels to help reduce the cost of running the swimming pool pump and aircons in the house.

Seems 10kw going back to your meter when not using is a good idea?, quote around 200,000 baht.

Any helpful thoughts or ideas would be very welcome.

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Not sure you can pump power back without getting permission (running the meter backwards). Certainly requires extra controls.

It may prove a good saving if it takes on the load though, or a good part of it. The usual issue is the expense of all the hardware, and it would take a long time to recover that based on reduced bills. 

You need to talk to someone who has done this themselves.... I recall someone at the Expats Club talking of the idea once 

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Posted (edited)
Just now, jacko45k said:

The usual issue is the expense of all the hardware, and it would take a long time to recover that based on reduced bills. 

Long time = 3 years at current prices (no COVID discounts).

Edited by BritManToo
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Posted (edited)
7 minutes ago, BritManToo said:

Long time = 3 years at current prices (no COVID discounts).

At my place, even if it took on the full load, 200.000 baht would take 5 years as my average monthly bill is 3000 baht. 

I presume the above price included sufficient batteries to do this.

Edited by jacko45k
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Since this isn't directly Pattaya related let's move it to Electrical for more directed input.

 

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Interested in this, from a money saving, fun and green perspective. But I am also interested from a back up side. What size of batteries would i need to keep a Tv, router, a few ceiling fans, limited lighting and a largish fridge freezer running overnight if there was a blackout say.

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Posted (edited)
3 hours ago, sungod said:

Interested in this, from a money saving, fun and green perspective. But I am also interested from a back up side. What size of batteries would i need to keep a Tv, router, a few ceiling fans, limited lighting and a largish fridge freezer running overnight if there was a blackout say.

Easiest way is inverter + battery.

Like this one, 1000w inverter 4kbht, 100AH battery 5kbht.

(Next step up 3kva hybrid inverter 8kbht, needs at least 2 batteries)

No need for solar (better without IMHO), this will keep my TV/NAS/router/computer (330w) going for 2-3hours and switches itself when the power goes off ....... computer doesn't blink. Needs to be outside (watertight shed) really as it has a fan you can hear on all the time. Every extra battery gets me another 2-3hrs.

 

IMG_20200527_151550 (1).jpg

 

For what you suggested doing, 3kva hybrid inverter (8kbht) + 4x 100AH batteries (20kbht).

Plus 4 x 330w solar cells (12kbht) if you want it to work off solar.

You might get away with 1/2 the cells and batteries.

Cheaper to buy a petrol generator IMHO.

Edited by BritManToo

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35 minutes ago, BritManToo said:

Easiest way is inverter + battery.

Like this one, 1000w inverter 4kbht, 100AH battery 5kbht.

(Next step up 3kva hybrid inverter 8kbht, needs at least 2 batteries)

No need for solar (better without IMHO), this will keep my TV/NAS/router/computer (330w) going for 2-3hours and switches itself when the power goes off ....... computer doesn't blink. Needs to be outside (watertight shed) really as it has a fan you can hear on all the time. Every extra battery gets me another 2-3hrs.

 

IMG_20200527_151550 (1).jpg

 

For what you suggested doing, 3kva hybrid inverter (8kbht) + 4x 100AH batteries (20kbht).

Plus 4 x 330w solar cells (12kbht) if you want it to work off solar.

You might get away with 1/2 the cells and batteries.

Cheaper to buy a petrol generator IMHO.

 

Thanks, was actually looking at the price of a gennie, not that expensive in comparison and think you may be right. Just thought it may be a bit more fun, and would be totally no reliant on anything (fuel etc) .

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8 hours ago, BritManToo said:

I'm about to add another 3x 330w panels to my garden with a 1000w Grid Tie inverter.

Power generation around 3 units per day (90 units a month).

Total cost around 13,000bht.

That's or an error or an very good deal on the grid tie inverter !

3x3500 (for the panels) = 10500 that leaves out 2500 for the 1K GT inverter.

 

 

 

7 hours ago, Crossy said:

and a number of members have had no-reverse meters installed, much to their annoyance.

Metro is one of them...

 

Now working on an automatic switch to a array of chargers for the battery pack (for modified UPS, lights and 12V equipment on nights) and a signal lamp (for the missus; that she doing the laundry).

Turns on when the consumed energy going to drop below zero.

 

Sensors and process flow working already, smart switch turns on the table light.

Later this smart switch will be modified to drive a contactor/relays for starting the chargers

 

image.png.866ed61b0ca0cb3f455cbd6c5fb5f6b9.png

image.png.d690961e49f112316e4e0496153b4744.png

 

If I still had the old spinning wheel then I this was no issue BUT only if the generated power that day is used the -same day- , before 22.00 ,  as we are on a Time-Of-Use contract.

 

Anyone else, on a regular contract with spinning disc meter, make sure that on (and around) the day of netmetering the wheel is NOT spinning back.

 

 

 

So, to the OP; which meter and what contract are you on?

 

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I found the info out on the net, like others on here just looking at it for now, am I permitted to put the website of the company I found on the net, or would that be deemed to promoting them, (I do not know if they are good or bad).

But the info received so far on here has really opened my eyes, thank you all so much.

I live on the "darkside" in Pattaya and my 3 phase meter is around 12 years old.

Frankly just to run an aircon or two, the pool pump, water heater, washing machine would be brilliant, the back into the meter thing is not an issue.

If anybody runs a company or philanthropically would offer assistance, I would be very happy.

Again thank you all so much

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7 hours ago, Metropolitian said:

That's or an error or an very good deal on the grid tie inverter !

3x3500 (for the panels) = 10500 that leaves out 2500 for the 1K GT inverter.

I've just ordered 3x 340w poly solar panels for 8,650bht inc delivery from Lazada.

Prices are very up and down at the moment.

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