Apologies if I got the cost wrong. My adopted daughter was doing the translation and took notes on the different components of the solar system, so the price I have must be wrong.
I was originally planning on going with Sean at Eyekandi Solar Chiang Mai. He wanted to install an Alpha Smile inverter/battery with the same solar panels. Given that he is a Farang and seemed very nice, I was highly inclined to go that way. However, Llana Solar was going to install a Huawei system at a lower price. Against my better judgment, I went with Llana Solar because the reviews of the Huawei system indicate that it is very reliable, because Eyekandi could not do an install for some time, and, at any rate, the cost was lower.
Eyekandi wanted to do a DC-coupled system, which has advantages with the Thai power grid. But I read that the battery wears down faster over time (this is logical), and that each expansion has to be 10KwH. I'm also very paranoid about a battery fire (something that is probably a bigger problem with a poor install than an off-brand system).
Mine is AC coupled, meaning it is drawing a small amount from the grid unless the power is cut. The AC is converted to DC and then converted back to AC. I really do not know which is the better choice. I also don't know anything about electrical or solar systems, so I was flying in the dark with the help of ChatGPT.
As I understand it (again, qualified statements), Sean was going to put a whole house surge protector in front of the unit. The Huawei system does not need that as it offers surge protection built into the inverter. The only part of the system that is grounded is *after* the inverter (the circuit breaker box between the solar system and the house breaker).
I'm not sure whether that is the right way to do it. Llana Solar was obviously not an expert at this. Hopefully, it will all be OK.
Are those 60,000 baht batteries safe?