JBChiangRai

What is the chart on the bottom right hand side? Is it something people used to put in their cars last century?

I am sure they will accelerate their delivery schedule. I certainly won’t be ordering at the current price premium over China, I think a lot of customers are going to get burned.

Deposit paid and my order is already in for the first Cyberster to arrive at the Chiang Rai dealership. Quite a beast if they deliver the claimed 0-100 time of 3 seconds.

I think I got luck with my LiFePo4 batteries, I paid 80,000 baht for 28.8KwHrs. My now deceased friend with a Chinese wife sourced them in China and sent them over "Thailand Special Line" duty free

Any ICE with a spark plug can run on Hydrogen, it's just a matter of how you get the mixture right Free piston engines developed from 1930, almost 100 years ago.

oh wow! an internal combustion engine, how very modern!

Can you set the cut-off voltage? that's the key number on a large GT solar system.

In the UK, they are a lot cleverer (surprise, surprise). They install meters with every transformer and periodically check that the meter reading at the transformer matches the sum of the meters of the houses it supplies. Sometimes one meter for every 30 houses. If it doesn't, they start looking at who is using more power than they are paying for.

Does anyone have first hand experience of a hybrid inverter that will export all its surplus energy to the grid? My recommendations are :- Design your roof for solar and not solar for the roof Go Grid-Tied without ESS Install a small solar system from an approved supplier with a feed-in meter, because at some point in the future, we are all going to be on digital meters. Install a larger grid-tied system yourself when the dust has settled Finally, use a grid-tied inverter that you can tweak the settings on * Use an Automatic Voltage Regulator * if you can tweak the settings, it can't be PEA approved, the MUST dedicated Grid-Tied inverter is approved and the settings are behind a password which they cannot give you (PM me for the password). Grid-Tied systems work by matching the frequency of PEA, then increasing their voltage to pump power out to the grid. My experience is the grid doesn't like taking the power, at a pre-set voltage grid-tied inverters go into an error mode, wait and restart. If you can increase that voltage then you can export more power. If your neighbours on the same transformer & same phase use a lot of power, you won't have a problem, they will soak up your power. For that reason, I would go 3 phase too.

My current house is generating an ROI at 20%. Blame that on installing 28.8KwHr's of LFP batteries, and doubling up on inverters because the Hybrid inverters were terrible at exporting.

In my last house I paid 130k for 22 panels and a 6Kw grid-tied inverter, I averaged 29 units a day at 4 baht per unit which is 41,000 baht per year, 3 years is 120,000 baht, I could have installed it for less with what I learned during the process.

With an ROI of up to 33%, not fitting Grid-Tied solar power is plain stupid. As the country transitions to EV's, PEA need all the help they can get from us with our tiny little installations.

A couple of my friends have been caught by the meter reader spinning their meters backwards, one of the apologised profusely and said it was set up incorrectly, the other got an estimated bill and it was corrected again the following month. But no huge problems.

They do but the equipment has to be approved, installed by an approved installer who usually charge a fortune and the paperwork is typically onerous so "palms have to be greased" at more cost. Then they buy back your surplus power at half the price they charge you for their power.

It's not so much "legal" as "naughty". Unless you have permission, you are not supposed to feed back surplus power into the PEA grid. Getting permission is like having orders signed in triplicate, sent in, sent back, queried, lost, found, subjected to public inquiry, lost again, and finally buried in soft peat for three months and recycled as firelighters.

My daughter received her MG EP+ last October after a 6 month wait. I liked it so much I ordered one, I popped into the local MG dealer yesterday to check how much longer it would be and was told another 3 months, but I could have the new MG4 in blue "X" spec straight away. I switched my order to that and get it on Tuesday morning. I still can't help wondering if I have done the right thing, the EP+ is almost 200,000 baht cheaper, so cheap it's actually ridiculous. I can understand MG shipping the EP+ so slowly, they can't be making anywhere near the same margin on it.

You are not breaking any law (in the legal sense) exporting to PEA, you are only breaking their rules, it's no big deal, they are probably happy now that they understand why your consumption has dropped. Funny story, I checked our meter at 8:00 on the day they come to read our meter, we had used -5 units, I quickly plugged my EV in to charge and consume at least 5 units as quickly as possible. I checked again at 8:30 and they had already read the meter, paper bill on the gatepost, same reading as the month before, 0 units consumed and 26.34 baht standing charge only. They have never come before 9:30 and it's sometimes as late as 14:00. That will teach me to get complacent. They will come 3 days earlier this month because the month has only 28 days.

I wouldn't be too worried about PEA visiting, we had them come here when we kept blowing the fuse at the transformer, they know we have a large solar installation and they haven't done anything to us except split our 6 house development across 3 phases instead of all on one phase.

The nature of filters in water machines, especially RO filters, is that as time goes on their ability to filter out impurities improves, whilst at the same time the flow rate through the filter decreases as it gets more clogged up. At some point, the flow rate is so poor that it's more economical to change the filter. The only filter type I would trust for drinking water is RO (reverse osmosis).

Nonsense

I don't have a diagram, but I will explain it. I have 3 MUST 6Kw Grid-Tied inverters with 7.2Kw of PV on each, these connect direct to PEA. I have 3 of MUST 5.5Kw Hybrid inverters (with parallel cables) with no PV but 28.8KwHrs of LifePo4 batteries attached (48v), the inverters are set to UPS mode and to charge the batteries when needed from their internal chargers direct from PEA. The Hybrid inverters have their inputs connected to PEA and their outputs connected (through an Automatic Voltage Regulator AVR) to the house's Distribution panels (one upstairs and one downstairs). The Hybrid inverters run in bypass mode with PEA power available and just connect the inputs to the outputs automatically, in the event we lose PEA power, they immediately kick-in to generate upto 16.5Kw of power to the house and when the power comes back again they switch to bypass mode and recharge the batteries. Unless you hear them kick-in, you can't tell when we have a power cut. Initially I thought I could do it all with the 3 Hybrid inverters, but I found the export function to be really poor, they would export one at a time, no more than 1 Kw, and after 15 minutes of one inverter exporting with it's fans running noisily, the next one would start and the prior one would stop. So I had 22Kw of panels mostly being wasted, that's when I added the Grid-Tied inverters. My Grid-Tied inverters are naturally cooled without fans, so in normal use the whole installation is silent, when we have a power cut, the Hybrid inverters are noisy as the fans kick in. I had to add the AVR because we have a lift between floors and in the evening as my neighbours were running their air conditioning, the voltage would drop to a level that the lift would error and fail. The room I have the inverters and batteries in is air conditioned 24/7, it serves multiple purposes, it's the power room, it's a wine cellar and it contains my computer servers. We are probably generating around 1,800 to 2,000 KwHr's a month and mostly out PEA bill is about 100-200 baht.

Yes, that is exactly what I have done.

You won't get 100% efficiency, I have 21.6Kw in panels and 18Kw in inverters, I could hit 17Kw maximum power at installation but 20 months later I'm down to 15Kw (It's been like that for about a year).

I'm not sure about systems charging batteries, but if you are Grid-Tied, you can exceed the maximum power in watts of the inverter, but not the VoC. Exceeding the input power will just flatten the curve and give you more output outside peak sunlight hours (11:00-13:00) and also on poor sunlight days. Your PV will derate by about 15-20% in the first 18 months, certainly mine have, they are mono-crystalline which are supposed to be better than Poly.

Illegal? I don't think it's illegal as in "breaking a law", for sure it's against PEA rules because although my equipment is on their approved list, I just use a lot more of it than they like and I had my sparks install it instead of one of their approved installers. Most Grid-Tied installations are like that. I can think of 6 of my friends off the top of my head who all do the same and I don't know anyone who has an approved installation. We are all going to end up with one-way meters at some point. In Chiang Rai all new meter installations appear to be one-way electronic types, if they replace mine I would be no worse off than not exporting from the outset, I'm not so sure I would want to cycle my batteries though, I would need to do the sums on the cost of replacing them vs. the cost saving of cycling them. I am 40% of the way to generating an ROI on my installation. One of my friends also has a Hybrid system, one of his two batteries failed after 2 years, the supplier isn't interested in honouring the warranty. I definitely wouldn't go Hybrid again.