Bandersnatch

Can you provide a breakdown of your calculation or did you just guesstimate it? My setup: Main Components (at todays prices) 20,000 Watts of PV @ ฿5/W = ฿100,000 36kWh Batteries @ ฿5k/kWh = ฿180,000 20kW of Inversion @ ฿5k/kW = ฿100,000 Total = ฿380,000 Savings: PEA saving (no meter) ฿4,000/month based on my bills from a few years ago (prices might have gone up) Fuel saving for 2 drivers and 2 vehicles and 1 motorbike ฿4,000/month (based on Previous usage using ICE from a few years ago) = ฿96,000/Year saving Payback = 4 Years Based on what I actually paid a few years ago my payback is closer to 6 years

Due to low demand for electricity at night in Thailand many EV owners have TOU meters to charge their EVs with half price electricity. I use my home solar to charge my 2 EVs and an electric motorbike. I don’t have a meter.

BYD Chargers ฿4/kWh

The Confusing Mess that is Hybrids. I agreed with most what was said in this video below. However, I successfully drove a PHEV as an EV the vast majority of the time and don't know what to make of the claims in the press that many PHEV owners never plug them in. There is a widely quoted study by International Council on Clean Transportation but it never claims that PHEV owners admitted they never plugged in. What it actually says is "The low real-world electric drive share we calculate indicates that many PHEVs are not plugged in daily" which is not the same thing I was also surprised that Toyota's "self-charging" Hybrids didn't get a mention.

Japanese automakers under threat as Thailand shifts to EVs https://youtu.be/56B6m9pkVuw?si=uVC7-g_41bzyg6M3

If you want a supply and fit you could try getting a quote from Chaweewan Group Solar https://www.facebook.com/groups/300126774329850 SolarThailand.biz

You can set the priorities for your inverter Solar, Batteries, Utility SBU uses solar first to meet the load of the house then tops with some power from the battery, then finally adds from the grid. SUB uses solar first then tops up from the grid and only uses batteries in a power cut. I use USB as I am off-grid and plug my EV into the Utility connection on the inverter. So when I draw from the EV at night there is no solar and I prefer to use my 86kWh EV battery which is much more efficient than my 36kWh home batteries

1 PEA unit is 1kWh unfortunately the only way for a solar system to match your household load 24 hours a day is to have batteries which are expensive. Here is a graph of one of my 5kW inverters and you will see that solar ramps up during the day, producing too much power in the middle of the day and requires batteries for 12 hours of night time use. Your PEA Bill tells you how many kWh you use in the month but not when they are used. Many people install solar for daytime use and rely on the grid for night time. Another option is an energy monitoring system that tells you when you are using most power. Here is a video I made about my system: After monitoring you will probably find that with 24 units per day you are probably not using more that 2kW during the day and closer to 500W at night. So a 5kW inverter and 5kW of panels will probably cover most of your daytime load. Sizing a battery system is more difficult if you want to cover 100% of your night time use. Here is a video I made about sizing batteries for solar systems As for costs, I published component costs above, but most people usually go for supply and fit which can be quite a bit more expensive.

I suggest posting the ad in https://aseannow.com/forum/319-alternativerenewable-energy-forum/ and asking for feedback- lots of guys have experience building their own systems and will be familiar with the best brands

I came back to my BYD Seal yesterday to see 3 young Thai guys studying the back of my car. Turns out they were looking for the exhaust pipe, the pickup truck that they had arrived in had a particularly large after market one. I explained that it was electric. “But it has an engine as well?” “er no, just electric” ”what happens when the electricity is empty” ”we fill it up at home from solar or on a trip many pump stations have electric chargers” They didn’t look convinced. I was surprised that they had never heard of a BEV.

As I said above, the bigger your bill the bigger the savings My Main Components (at todays prices) - doesn’t include installation 20,000 Watts of PV @ ฿5/W = ฿100,000 36kWh Batteries @ ฿5k/kWh = ฿180,000 20kW of Inversion @ ฿5k/kW = ฿100,000 Total = ฿380,000 Savings: PEA saving ฿4,000/month Fuel saving for 2 drivers and 2 vehicles and 1 motorbike ฿4,000/month (based on Previous usage for ICE) = ฿96,000/Year saving Payback = 4 Years Based on what I paid a few years back my actual payback is closer to 6 years.

Tier one solar panels are already at ฿6.5/Watt Inverters are already as low as ฿4K per kW 5kW of Solar = ฿32,000 5kW Inverter = ฿20,000 Total cost for main components= ฿52,000 You will need various comments like brackets and rails to fit the panels, Cables and breakers etc. Then you will need someone to fit the system. The prices for all of these will vary. Most people just get a quote for supply and fit which will be more expensive. Solar will ramp up during the day here is a graph for one of my 5kW inverters

Payback is a popular financial analysis tool because it’s simple to understand, but it’s not very sophisticated. For example a single 500W panel and matching inverter will never produce more power than you can use so no curtailment (wasted power) such a system could produce a payback of less than a year but the savings would be very small. The bigger the system, the bigger the savings and the longer the payback. You said you wanted to include opportunity cost and cost of capital, these are different tools so have to be applied separately. A 10 year payback is an investment that is producing a 10% return on investment. The opportunity cost is cost of the lost opportunity. So if Daft Coin made 20% last year, not investing in it this year potentially lost you 20%. I have an off-grid system (no meter) Due to the diminishing returns with solar, the closer you get to 100% covering your electric bill the bigger your system needs to be. Batteries are expensive, but adding a small (say 5kWh) battery means that you will get more value from your system as the battery acts as a buffer for times when solar production drops. The bigger your current electric bill is, the bigger the potential savings are. I have 2 EVs and an electric motorbike and my solar system powers them and my house without a meter. I do use my EV for extra backup power. My payback is 6 years.

OK we won't

That is not the case. EV subsidies tend to be introduced to pump prime EV demand then they are phased out. There are no direct subsidies in mature EV markets like Norway and the UK. Thailand has a plan for both tax and non-tax incentives from 2022 until 2025. Don’t forget the Diesel subsidies in Thailand far exceed EV subsidies “the Oil Fuel fund is in the red about 100 billion baht from subsidising the diesel price” https://www.nationthailand.com/thailand/policies/40036725

So you’re happy to continue to drive your slow, noisy, dirty fossil wagon for another 10 years because you think EVs will be better then. Of course they will be better, but I will be on my 4th EV by then having had the pleasure of driving fast, quiet, clean cars all that time.

Then you clearly don’t know too much about Chinese EV manufacturers many of which have premium brands. Denza, BYD’s JV with Mercedes-Benz Is one and here is another

BYD is the top seller of EVs in Thailand and the batteries are LiFePO4 as are the std range Teslas and many other EV manufactures are also making the transition. You are thinking of Cobalt mining in the DRC. You are obviously unaware that petrol and diesel have to be refined with cobalt catalysts that reduce sulphur and nitrous oxide emissions. https://www.cobaltinstitute.org As for Lithium the top source in the world is Australia with very little environmental damage. Most EV charging in Thailand is either from solar or using half-price overnight TOU electricity. “the Oil Fuel fund in the red about 100 billion baht from subsidising the diesel price” https://www.nationthailand.com/thailand/policies/40036725 “Perception” exactly. My first Chinese EV is over 3 years old now and has been faultless, I wouldn’t have bought another one if it had been otherwise. A number of forum members have bought the BYD Seal which was my second EV and have compared it favorable with BMWs, MBs and Porsches that they have owned. The companies that run them run them at a profit. Buy an MG or BYD EV and every dealership has chargers in every province. As an EV owner I only need to use one on a journey over 600km. You can’t buy a H2 car in Thailand and if you could there are no public filling stations. “U.S. Hydrogen Car Sales Are Collapsing. They were already a tiny fraction of the market. Then, last quarter, sales dropped 91%.” https://insideevs.com/news/725999/us-hydrogen-car-sales-2024q2/ Do some research. Test drive my car a BYD Seal AWD Performance and then come back and you will find that you are treated with a bit more respect. https://www.reverautomotive.com/en/locator/dealer-station In the meantime you can watch one of my videos - don’t worry the channel isn’t monetized

MG brought a coupe version of the MG Cyberster to test at Goodwood this week the MG Cyber GTS The only video I could find of it is in Spanish!

A new version of the MG HS/ HS PHEV (Honda CRV sized car) has been announced in RHD for the UK, so we should be getting it here as well. The PHEV gets a bigger battery, more performance and all models get a new interior and some tweaks to the exterior

“Everyone is entitled to his own opinion, but not to his own facts.” ― Daniel Patrick Moynihan Your opinions are not based on direct experience so are worth less than those of us with that direct experience. You have demonstrated that you don’t even process basic facts about ICE cars let alone EVs but you have demonstrated a…

ZEEKR X with 2 models. Officially launched in Thailand. ZEEKR X Standard : 1,199,000 บาท ZEEKR X Flagship : 1,349,000 บาท

Do have a supporting reference for that figure of 20 years or did you just make it up? "What’s the Average Life of a Car? In the past, the average lifespan of a car was significantly lower than it is today. Now, you can expect a standard car to last around 12 years or about 200,000 miles. More advanced vehicles like electric cars can go even longer, up to 300,000 miles." https://cascadecollision.com/what-is-the-average-life-of-a-car

I agree with you, just looking for an excuse to post the truck sales figures

฿2.6 per kWh doesn’t sound expensive to me but I still prefer my free solar power after I have powered my house