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Bandersnatch

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Posts posted by Bandersnatch

  1. 1 hour ago, nickmondo said:

    It can be a very good investment if your kwh useage is large, but if you only use about 10 a day, it would take a long time to re claim your investment

     

    I have already shared my payback.

     

    IMG_1545.thumb.jpeg.e64f8c8ff5685f836dddbcb5e2d66f06.jpeg

     

    Using these figures for your example of 10kWh/day usage

     

    5,000 watts of PV @ ฿5/W = ฿25,000

    5kWh of BESS @ ฿5k/kWh = ฿25,000

    5kW of Inversion @ ฿5k/kW = ฿25,000

    Total cost (not including installation and ancillaries) = ฿75,000

     

    Savings

    PEA Bill 3,650kWh/yr @ ฿5/kWh = ฿18,250/year

     

    Payback = 4 years

     

     

    Or 

     

    Total cost including installation and ancillaries (estimated)  = ฿100,000

     

    Savings

    PEA Bill 3,650kWh/yr @ ฿5/kWh = ฿18,250/year

     

    Payback = 5.5 years

     

     

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  2. 55 minutes ago, Startmeup said:

    Interesting. Thailand has become alot more developed since 2010, almost 15 years ago and that means massive amounts of condos have been built in Bangkok, Pattaya, Hua Hin, Phuket etc since then as people leave the countryside and move to cities where there is more work and opportunities available. I would think these stats have changed alot.

     

    "I would think these stats have changed alot"

     

    10% in 2010 and you think it is now over 50%

     

    But no evidence offered to support your thinking.  

     

    condo.jpg.7b13598e2214668a453cf5afa8414ca8.jpg

     

     

  3. 6 years ago while I was researching battery options I contacted Redflow and they gave me details of their reseller here in Thailand.

     

    Items manufactured in Thailand but made in factories located in free trade zones which are designed to encourage exports are treated as imported when they enter Thailand proper and taxed as such.

     

    I was quite interested in Redflow’s ZBM2 10kWh zinc-bromine flow battery made in Thailand.

     

    The price to purchase after it had been shipped from Thailand to Australia was ฿260,439 but in Thailand where it was manufactured, the price was ฿550,000

     

    I bought some cheap deep cycle gel batteries instead and a few years later paid ฿69,000 for an equivalent sized LFP battery. 

    • Like 2
  4. 24 minutes ago, Rampant Rabbit said:

    most people in Thailand its impractical, Jesus they havent got enough money to get through today


    I have 2 Thai friends who have solar businesses and sell almost exclusively to Thais and they are very busy. 
     

    Haven’t you seen solar panels for sale everywhere? Or maybe you don’t get out much. 

     

    This is the solar group my wife is in and it has 180,000 members 

     

    IMG_3438.thumb.jpeg.04d683e0aca677a126dc2803d9c8c906.jpeg


    The comment you made about my car was also incorrect. The BYD Seal was the second best selling EV last month in Thailand, they sold over 3,000

     

    IMG_3381.thumb.jpeg.8ddb55a262bed78216c96106e29edc2a.jpeg

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  5. 52 minutes ago, superal said:

    Have you read about the vertical solar panels ? One YouTube video stated that they can be up to 7 times more efficient 

     

    In Europe an East West orientation corresponds with peak demand and low solar supply on the grid. Bi-Facial solar panels make up for low production in the middle of the day with effectively being 2 panels. There are some suggestion that they are cooler and so are more efficient, but 700% more efficient I’m not sure about that.

     

    A couple of years ago I made a video on which direction should your solar panels face.

     

     

     

    59 minutes ago, superal said:

    is it possible to use alternating current air con units , thus an inverter would not be needed ?

     

    Normal air-cons are AC,  I think you meant DC. I briefly investigated them during my build. They are very much more expensive than conventional air-cons as they are a bit of a niche product. If the sun goes in the power will drop, so it is recommended to pair them with batteries. It’s now getting very expensive. 

     

    A 5kW inverter will only cost you ฿25k so you’re not saving much.

     

    1 hour ago, superal said:

    Kitchen size about  20 x 4 x 3 meters . L x W x H

     

    So equivalent to 5 conventional 4mx4m rooms with all the added heat from the kitchen and I am guessing not much insulation or a good air seal? 

     

    Wouldn’t want to guess what your BTU requirement would be but it’s going to a lot

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  6. 56 minutes ago, UWEB said:

    Will this V2L System work also with a 3 Phase System? I have a 3 phase 10 kw on Grid System and have it already for longer time in my mind to buy a EV Car and use the Battery as back up.

     

    You should watch my other videos on my channel about how I setup V2L. Basically I used a transfer switch to select between 2 sources of ac power input. In your case the grid and V2L. Set your inverter to SBU (solar first, then Battery, then Utility) with Utility if there is no V2L it will switch to PEA/MEA

     

    I have single phase so I can’t say for certain that it would work. Does your inverter have the option to accept a generator input?

  7. 1 hour ago, brianthainess said:

    At 26 baht a month why get rid of the meter? To save 312 baht a year? Have you explained to PEA why your readings are low, to stop them replacing the meter, have you e-mailed there head office with photos attached? 

     

    I have documented my experiences with PEA over the years on this forum. 

     

    I have been accused of spinning my meter backwards (to the exact same reading every month)

    Each time I asked for a digital solar meter that cannot be turned back.

     

    I have been accused of breaking their meters with my big bad off-grid solar system.

     

    I have had about 20 meetings with PEA Surin at their main office over the years.

     

    I have had my solar system inspected 4 times including by the Solar Team from PEA Korat, who tried to explain to the local office that my system is off-grid and physically cannot send power out to the grid.

     

    Over the years staff change. Every time I get a new meter reader, I get a new meter.

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  8. 1 hour ago, sirineou said:

    I don't think he gave the meter back, why would someone do that? II don't think it costs anything to keep the meter, Am I correct? 

    That way during the rainy season where you might not produce anything you can draw from the matter and when you produce more than you consume , you can feed back .

     

     

     

     

    Did you watch the video I posted in my opening post?

  9. 28 minutes ago, CharlesHolzhauer said:

    @Bandersnatch

    To be honest, I find myself envious of your off-grid solar energy setup, as it offers independence from the conventional electrical grid. While I have the financial means to invest in such a project, unfortunately, I lack the expertise.

    Considering replacing one of my cars, I'm contemplating an electric vehicle like the NETA V for our short shopping trips around town. Fueling it from solar produced energy sounds immensely attractive and sensible. However, I'm curious about the skills required for maintaining such an elaborate solar setup in comparison to a conventional electrical grid installation.

    As I am getting older, I also wonder about the long-term sustainability of such a system, especially in the event that my wife might have to manage the solar installation alone. In our village, there's a skilled person proficient in rewiring houses with breaker boxes and earthing equipment, but he admits to having no knowledge of solar installations and their components.

    Given my age, it's a concern that my wife or her relatives may not possess the skills needed to maintain, fix, or troubleshoot issues with the solar setup. Have you considered this aspect, and if so, do you have any plans in place for the future management of your solar installation?

     


    There a few approaches to solar that attract people for different reasons.


    There is the full on DIY approach including building up batteries with individual cells. Such an approach is definitely the cheapest but would be very difficult to support.

     

    The other extreme is have a professional company source all the components and install them. They will manage the warranty process and will offer annual checks and panel cleaning. You get what you pay for.

     

    I am in the middle. I purchased all the panels, inverters and batteries myself. I then employed a Thai company to install and supply all the ancillary items. They offer no warranty but can be paid to problem fix. I dealt with the manufacturers to ensure the installation was correct. 
     

    In your case I would recommend a professional installation with warranty and support. DM me if you want suggestions 

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