Solar panel package suggestion.

[kwak250]

Just been to Homepro and trying to understand this package.

They say 18 units will be good for 9.90kwp

We currently are paying around 4-4500 baht a month and they say this will be easily enough as it covers around 5200- 6100 baht 

They say 1 panel will produce around 1 unit each day

Am I missing something as that looks like 558 units. Per month which is 

558x4.15 per unit probably only 2300 baht?

 

Also 425,000 seems a lot .

with a battery 800+

 

[AlexRRR]

You can do better, I am building so got into Facebook and subscripted to a few building channels, I been getting add s for kitchens and solar as well as other stuff, found my solar and kitchen guy this way.

 

 Im in the Pattaya area but building in Sattahip and will be using a 3kw system, there is no buy back of unused power in my area, the Navy runs the show there and if you stuck a bigger system on the roof id be just giving it away, and solar is purely to keep my bill low as im having a pool pump running twice a day every day.

 

Firstly forget the sales talk these frisbys know jacks.h.i.t one think you learn living here there product knowledge is low to non existent, and they will lie to your face for a sale, in other words tell you what you want to hear.

 

Had a system back in AU, 5.4kw with 10kw battery in Melbourne, battery was full by 10 am in summer, for 4 months a year I payed nothing and gained credits and the battery was sufficient in the evenings since it was just running lights and a pc. That all changes as you enter winter battery is spent in 3 to 4 hrs, cannot charge fully due to less sun etc, but the credits kept it cheap. I used a single Panasonic aircon inverter type for heating and cooling but for cooling I hardly ever turned it on.

 

In Thailand there is plenty of sun so battery is a good option but you will need 2 batterys if you run air con all night, they over kill here in the size they want to stick on your roof, 10kw system is double what I had back in AU, what are you running a factory? in my opinion a 5kw system will fill 2 10kw batterys in Thailands sunny weather, as I said 4 hrs of sunlight filled my 10kw battery back in AU. 

 

My cost for a 3kw system installed will be 79,000, I suggest you shop around.

 

Really need more info if you want recommendations, like air cons how many and how long you run them.

[CharlieH]

MOVED to Alt Energy Forum

[kwak250]

32 minutes ago, AlexRRR said:

You can do better, I am building so got into Facebook and subscripted to a few building channels, I been getting add s for kitchens and solar as well as other stuff, found my solar and kitchen guy this way.

 

 Im in the Pattaya area but building in Sattahip and will be using a 3kw system, there is no buy back of unused power in my area, the Navy runs the show there and if you stuck a bigger system on the roof id be just giving it away, and solar is purely to keep my bill low as im having a pool pump running twice a day every day.

 

Firstly forget the sales talk these frisbys know jacks.h.i.t one think you learn living here there product knowledge is low to non existent, and they will lie to your face for a sale, in other words tell you what you want to hear.

 

Had a system back in AU, 5.4kw with 10kw battery in Melbourne, battery was full by 10 am in summer, for 4 months a year I payed nothing and gained credits and the battery was sufficient in the evenings since it was just running lights and a pc. That all changes as you enter winter battery is spent in 3 to 4 hrs, cannot charge fully due to less sun etc, but the credits kept it cheap. I used a single Panasonic aircon inverter type for heating and cooling but for cooling I hardly ever turned it on.

 

In Thailand there is plenty of sun so battery is a good option but you will need 2 batterys if you run air con all night, they over kill here in the size they want to stick on your roof, 10kw system is double what I had back in AU, what are you running a factory? in my opinion a 5kw system will fill 2 10kw batterys in Thailands sunny weather, as I said 4 hrs of sunlight filled my 10kw battery back in AU. 

 

My cost for a 3kw system installed will be 79,000, I suggest you shop around.

 

Really need more info if you want recommendations, like air cons how many and how long you run them.

Many thanks for the info

We are building a new house

2 x 24k btu running probably 8 hrs a day

1 x 18k btu running 18 hrs a day

1 x 12k btu running 18 hrs a day

All inverters

New pool so need to run the pump.

Nothing much else apart from a pc 2-3 hours a day

Never thought about charging a battery or 2 .but then they are expensive .

 

 

 

[KhunLA]

58 minutes ago, kwak250 said:

Just been to Homepro and trying to understand this package.

They say 18 units will be good for 9.90kwp

We currently are paying around 4-4500 baht a month

 

Also 425,000 seems a lot .

with a battery 800+

Yes, 425k without batteries is way too expensive.  

 

You are using on average <1000 kWh / units a month, so yes, that system would be enough.

 

We have 8kW hybrid inverter, and on good day will easily produce 50kWh, or 1500kWh a month, and we've used 1000+kWh a month a couple times. 

 

Only 2 of us at house, and minimal use after sunset.   6-8kWh overnight.   Abuse the ACs during daytime, (1 sm AC at night) and have BEVs that charge with excess solar, not used by the house.

 

Our system, w/ESS ...

https://aseannow.com/topic/1268214-solar-8kw-hybrid-inverter-w10kwh-upgraded-to-20kwh-in-sept-2022-essbattery-not-diy/

 

[BritManToo]

1 hour ago, kwak250 said:

Just been to Homepro and trying to understand this package.

They say 18 units will be good for 9.90kwp

We currently are paying around 4-4500 baht a month and they say this will be easily enough as it covers around 5200- 6100 baht 

They say 1 panel will produce around 1 unit each day

Am I missing something as that looks like 558 units. Per month which is 

558x4.15 per unit probably only 2300 baht?

 

Also 425,000 seems a lot .

with a battery 800+

 

15kwhr lifepo4 battery is 45kbht assembled or 30kbht if you bolt it together yourself.

 

I'm buying 580w split mono bifacial ntype from Lazada at 2kbht each delivered (one just arrived 5 mins back). 18 would cost 36kbht but they're massive, where would you put that many?

I think that's too many as 5 fill my 5kwhr battery before 1pm.

 

10kw off-grid inverter around 20kbht.

 

580w is the big one on the left

 

Mounting you can buy some stainless steel box for almost nothing, along with a drill, circular cutter and arc welding kit, less than 4kbht for all the bits.

 

Around 105kbht all in and a bit of sweat!

[kwak250]

16 minutes ago, BritManToo said:

15kwhr lifepo4 battery is 45kbht assembled or 30kbht if you bolt it together yourself.

I'm buying 580w split mono bifacial ntype from Lazada at 2kbht each delivered (one just arrived 5 mins back)

10kw off-grid inverter around 20kbht.

 

580w is the big on on the left

 

Sorry for the questions.
So would i be able to charge 2 batteries and still use all the air cons in the day and have enough for the evening
I guess i will be using around 1500-2000 units a month when we finish building the house and pool.

We are building a new house

2 x 24k btu running probably 8 hrs a day

1 x 18k btu running 18 hrs a day

1 x 12k btu running 18 hrs a day

All inverters

New pool so need to run the pump.

Nothing much else apart from a pc 2-3 hours a day

At the moment at our current house we use around 1000 units 

[kwak250]

I did see before someone mention about the meter running backwards but was told today all new meters for Solar will be digital

[BritManToo]

2 minutes ago, kwak250 said:

Sorry for the questions.
So would i be able to charge 2 batteries and still use all the air cons in the day and have enough for the evening
I guess i will be using around 1500-2000 units a day when we finish building the house and pool.

We are building a new house

2 x 24k btu running probably 8 hrs a day

1 x 18k btu running 18 hrs a day

1 x 12k btu running 18 hrs a day

All inverters

New pool so need to run the pump.

Nothing much else apart from a pc 2-3 hours a day

At the moment at our current house we use around 1000 units 

My 580w panels provide 2 units a day each.

2000 units a day would be a medium factory!

[kwak250]

4 minutes ago, BritManToo said:

My 580w panels provide 2 units a day each.

2000 units a day would be a medium factory!

Hahaha sorry i meant a month

[Packer]

Perhaps 250k with no batteries. 

 

Forget batteries for a few years.

 

Bang the ACs on full blast until the sun goes down. 

[kwak250]

 

9 minutes ago, BritManToo said:

My 580w panels provide 2 units a day each.

2000 units a day would be a medium factory!

If 2000 units a month i would need around 60 panels?
Or maybe 20 and a battery or 2
Is this correct?

[UWEB]

As far as I know Home Pro is using Huawei Inverters. In general they are good and cheap, but if your plan is to get Batteries in a later stage better to stay away as they are high voltage Batteries and really expensive.

[jvs]

1 hour ago, kwak250 said:

Just been to Homepro and trying to understand this package.

They say 18 units will be good for 9.90kwp

We currently are paying around 4-4500 baht a month and they say this will be easily enough as it covers around 5200- 6100 baht 

They say 1 panel will produce around 1 unit each day

Am I missing something as that looks like 558 units. Per month which is 

558x4.15 per unit probably only 2300 baht?

 

Also 425,000 seems a lot .

with a battery 800+

 

Do you have a pool?

 

[KhunLA]

32 minutes ago, kwak250 said:

Sorry for the questions.
So would i be able to charge 2 batteries and still use all the air cons in the day and have enough for the evening
I guess i will be using around 1500-2000 units a month when we finish building the house and pool.

We are building a new house

2 x 24k btu running probably 8 hrs a day

1 x 18k btu running 18 hrs a day

1 x 12k btu running 18 hrs a day

All inverters

New pool so need to run the pump.

Nothing much else apart from a pc 2-3 hours a day

At the moment at our current house we use around 1000 units 

That moved the goal posts a wee bit from the OP, of ฿4k-฿4500 bill a month for less than 1000kWh. 

[kwak250]

23 minutes ago, jvs said:

Do you have a pool?

 

We are about to get one

[kwak250]

21 minutes ago, KhunLA said:

That moved the goal posts a wee bit from the OP, of ฿4k-฿4500 bill a month for less than 1000kWh. 

Yes we were basing it on our current house but are now around 50% finished building our new house.
I expect it to be double the bill with a pool and extra air con
At the moment we have a 12k btu inverter on at least 18 hours a day

Also a 18k btu inverter on almost 24hrs a day at least 22hrs
Another 12k btu running around 8hrs a day

[kwak250]

1 hour ago, BritManToo said:

15kwhr lifepo4 battery is 45kbht assembled or 30kbht if you bolt it together yourself.

 

I'm buying 580w split mono bifacial ntype from Lazada at 2kbht each delivered (one just arrived 5 mins back). 18 would cost 36kbht but they're massive, where would you put that many?

I think that's too many as 5 fill my 5kwhr battery before 1pm.

 

10kw off-grid inverter around 20kbht.

 

580w is the big one on the left

 

Mounting you can buy some stainless steel box for almost nothing, along with a drill, circular cutter and arc welding kit, less than 4kbht for all the bits.

 

Around 105kbht all in and a bit of sweat!

Say we are aiming for 60 -70 units a day 
Am i correct in thinking maybe get 12 panels giving me 24kwhr a day and 3 batteries each around 10kwhr
This would give me 54kwph 
If so what sort of price would this cost 
Many thanks for your help

[jvs]

1 hour ago, kwak250 said:

We are about to get one

I would get a DC pump for the pool,we are running a 2 inch pump with four panels for irrigation and a pump like that will be more than you need for a pool.

Bought it early last year and i think it paid for itself already.

All together cost was 24500 baht.

[kwak250]

2 minutes ago, jvs said:

I would get a DC pump for the pool,we are running a 2 inch pump with four panels for irrigation and a pump like that will be more than you need for a pool.

Bought it early last year and i think it paid for itself already.

All together cost was 24500 baht.

Many thanks i have so much to learn and think i might need a break and have a beer now,
Looking at getting a pool bult very soon
10mx 4 m around 1.5-18 m 
Will have to look at DC pumps soon

[GammaGlobulin]

I will be following this Topic.

 

[UWEB]

2 hours ago, kwak250 said:

Say we are aiming for 60 -70 units a day 
Am i correct in thinking maybe get 12 panels giving me 24kwhr a day and 3 batteries each around 10kwhr
This would give me 54kwph 
If so what sort of price would this cost 
Many thanks for your help

At first at all you can not discharge your Batteries down to zero, you should keep at least 10-20% left. And you need time to charge the Batteries at least 3-4 hours pending on the size of your System. If it is cloudy or even raining Season it will be sometimes hard to to get the Batteries recharged.

I have a similar set up like you will have with your new House, my Air Cons have similar sizes like yours and  running up to 24 hours. My Pool has the same size 10m x 4m x 1.5m with a 2HP/1.8Kw Pool Pump and Chlorinator and is using appr. 2kw per hour.

To get 60 to 70 Units a day you will need a bigger System than 10 kwp.

For your Info I have 21 kwp installed, but I have an EV and charge appr. 95% at home from Solar.

[Ben Zioner]

2 hours ago, GammaGlobulin said:

I will be following this Topic.

 

Now I am scared..

[kwak250]

10 minutes ago, UWEB said:

At first at all you can not discharge your Batteries down to zero, you should keep at least 10-20% left. And you need time to charge the Batteries at least 3-4 hours pending on the size of your System. If it is cloudy or even raining Season it will be sometimes hard to to get the Batteries recharged.

I have a similar set up like you will have with your new House, my Air Cons have similar sizes like yours and  running up to 24 hours. My Pool has the same size 10m x 4m x 1.5m with a 2HP/1.8Kw Pool Pump and Chlorinator and is using appr. 2kw per hour.

To get 60 to 70 Units a day you will need a bigger System than 10 kwp.

For your Info I have 21 kwp installed, but I have an EV and charge appr. 95% at home from Solar.

Thanks for this info

What size System would be needed for say 60 kw ?

Or how many panels/Batteries would be needed?

Sorry total novice with this just trying to work out the cost.

21kwp would that work for us?

[kwak250]

3 minutes ago, Ben Zioner said:

Now I am scared..

I thought that!

[Middle Aged Grouch]

They say Kunini Solar is the most reputable in Thailand ? Any comments or suggestions ? Thanks.

[Ben Zioner]

3 hours ago, kwak250 said:

Say we are aiming for 60 -70 units a day 
Am i correct in thinking maybe get 12 panels giving me 24kwhr a day and 3 batteries each around 10kwhr
This would give me 54kwph 
If so what sort of price would this cost 
Many thanks for your help

I don't get your math.

 

The average panel produces an average of 500 Wh times 4 [hours], hence 2 KWh. So you'd need 35 panel to cover your estimated consumption. 

 

Batteries would have to be 25 to 30 KWh for the night IMHO.

 

So, if no Batteries, 20 panels would be right and you'd pay 150 Baht a day to PEA. You could use that to calculate when you'd break even if you bought the extra 15 panels and battery packs.

 

Also If you purchase/install the extra panels without the batteries the the PEA KWh would cost you 2.8 Baht instead of 5 as they would purchase your extra power for 2.2 Baht a KWh.

 

 

[kwak250]

4 minutes ago, Ben Zioner said:

I don't get your math.

 

The average panel produces an average of 500 Wh times 4 [hours], hence 2 KWh. So you'd need 35 panel to cover your estimated consumption. 

 

Batteries would have to be 25 to 30 KWh for the night IMHO.

 

So, if no Batteries, 20 panels would be right and you'd pay 150 Baht a day to PEA. You could use that to calculate when you'd break even if you bought the extra 15 panels and battery packs.

 

Also If you purchase/install the extra panels without the batteries the the PEA KWh would cost you 2.8 Baht instead of 5 as they would purchase your extra power for 2.2 Baht a KWh.

 

 

Many thanks

I was sure I was way off so thanks for your reply

For some reason I was hoping 12 panels would be sufficient to charge the Batteries and use a/c in the day.

So I am looking at around 35 panels?

Is that going to be the minimum amount needed?

I thought PEA charge a huge amount to sort out the buy back deal .

 

[Ben Zioner]

13 minutes ago, kwak250 said:

So I am looking at around 35 panels?

Is that going to be the minimum amount needed?

Roughly, depends on the max output of your panel and the hours of sunshine you get. remember we have a rainy season. And I am just as puzzled as you probably are by the huge price differences between the various brands, etc...

 

It is what is needed, depending on the performance of your panels (2 KWh a day might be seen as conservative by some) and the amount of sunshine you get, if you want to be off grid i.e run off battery at night.

 

13 minutes ago, kwak250 said:

I thought PEA charge a huge amount to sort out the buy back deal .

I don't know about that, but they quoted me 2.2 THB, but reluctantly yes. Some guys here boasted that they run their meters backwards, but that's illegal and PEA is in process of changing their gear.

[kwak250]

I was wanting to build a car port  mainly for shade for about 4-5 cars and put the panels on top but 35 panels would be more like the size of the car park roof in Tesco.