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How much to set up solar for 40-50 kwh per day

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16 hours ago, KhunLA said:

If you PEA bills are that low, it wouldn't cost you ฿600k for a system.

OP is estimated up 50kWh a day, 1500kWh a month = ฿7500 PEA bill

฿600k / ฿7500 = 80 months = 6.66 yrs ROI 👍

 

If 40kWh a day = 8.33 yrs ROI

 

For 20 ROI, your PEA bill is only ฿2500 a month (<530kWh)

Yes, of course. I realized my error after I'd posted when it was too late to edit. I was waiting for someone to correct me. Thanks for the revised figures.

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  • Any indication of day/night usage split - To size your battery pack? Peak load - To size your inverter?   Do you actually want to be off-grid or maintain a PEA supply for backup?  

  • BritManToo
    BritManToo

    I always think people go about this the wrong way!   Learn to conserve, fit led lights, learn to switch off items you aren't using, do you really need that chest freezer and air con everywhe

  • Even using a contractor, you should expect to see payback in around 7-10 years. From then on, the energy you get is free!   Panels are usually warrantied for 20 years to 80% rated capacity.

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On 4/22/2024 at 11:35 AM, BritManToo said:

I only use Aircon occasionally, at the moment 1-2hrs/day as it's very hot, normally not at all. The fans all run from solar. Better to get acclimatised to the Thai weather IMHO.

Ok , that explains it . Yes then the units sound prob right . It also gives maybe some people some understanding back , as they might do the same but then get a much larger bill since they are running the airco 24/7 (or all night or anyway more hours then you).

On 4/19/2024 at 5:51 PM, Pink7 said:

my usage/production is 20-43kw per day and my 300k DIY setup is 2 x 5K inverters. 28 x 330w pannels and 30kw batteries. My electric bill used to be around 3000/month upto 4500/month, now its 38-1xx bt/month

 

Pink

now its 38-1xx bt/month  ??  whats that?

1 hour ago, Seeall said:

now its 38-1xx bt/month  ??  whats that?

By electric bill use to be from 38 bath to 1xx bath a month. So i use 0 to 5 units per month from grid.

 

Pink

 

  • 1 year later...
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Getting nearer to installing Solar

We will check what we are using in the day and maybe do without a battery and just run 2 air cons at night (2 bedrooms)

If we get extra solar panels for 4 air cons in the day and swimming pool pump to run in the day this might be the way to go.

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