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We're going to release it soon. There were a few curveballs in the testing so Mark tested for another 6 weeks to get the results.

@@mcelectrical ok thanks

Do you think they are okay?

as i have quote for them is jinko or trinia better instead?

i am in another state, sorry meant one message.

Hi Coder, my update on tigo is it’s mostly a waste of time, because it is an unnecessary failure point (they do fail a lot) and an unethical company that shuns their warranty problems. When you have significant shade, tigo won’t help. The bypass diode will engage and bypass 1/3 of the panel.

Hey Whereswally. You can go into SolarWeb and update the firmware. We normally do it for our customers because some firmware updates are glitchy. But if you find the settings to update it (not so hard to find) then the current update is a good one .

Hi John, there is a lot to unpack there. In short, we don’t recommend Sungrow anymore. And, if you want to upgrade a small system to a larger system with a battery, Tesla Powerwall 3 is the winner. It has 3 trackers, (or inputs) so easy to deal with your old panels in 2 of the inputs, and the new panels in the third input.

​@@mcelectrical yes, I saw today your video a few months ago on sungrow vs fronius, so I've had to change my quote request yet again. I do hope I'm not being annoying. we've also decided to forgo bathroom renovations to fit in a bigger budget. so probably looking at scrapping the whole current system for an all new build. while we did look at tesla, we're looking more to a ~20kw battery to cover 2 aircons over night even in no power situations. (health conditions play into it) thank you for replying.

Unsure who is taking the piss. Did you get a solar install with that? Details on the solar?

Yeh, maybe. It’s one of those things. Pitch? Orientation, temperature, shade? But if you are happy with the production, all good!

@mcelectrical well my setup is 4 strings, with some odd orientations... It's not great in winter as we have some big trees on the south that cast a lot of shadows... I checked my June production and I am probably averaging 14kwh a day...

Hmm, it’s hard to guess at the issue. It might be time to call your installer - you may need to get them out to have a look at it.

Hey @Camping. Fronius are picky on who they work with mainly because they have to ensure ongoing compatibility with firmware updates etc. If there is a problem with a Fronius/BYD system, Fronius insisted to BYD that they should be the first point of call for installers. Fronius wants to make sure the customer after sales experience is good, and that warranty issues are kept to a minimum.

Glad you found it useful!

lol. Fair call. I care much more about hardware. And so many other products suck harder… eg Tesla for string level monitoring

Thanks Yorick!

Thanks!

That’s exactly what I’ve got at home. I’m switching it for a heat pump next Friday. 4 times more edficient, and with the stc “rebate” it’s not that much more expensive.

Yeh, I think Fromius were working on that for an update. I’ll ask them if that is still part of the plan.

@@mcelectrical I wish you were in Perth, geez I'm getting the run around from solar companies over here getting straight answers to questions.

Yes we can. We just went the Sigenergy factory in Shanghai last week and recorded a review. Should be out in December.

Good question. First I assume that is their COST per kWh of a battery cell. Profit not included. Second, car batteries are not designed to cycle a full cycle per day. They are lower quality, more affordable. Also the Powerwall isn’t just a battery cell. It also needs a gateway, inverter, bms, casing, heat sink, fans, app development, marketing, warranty etc. Does all of that add up to an extra $900 per kW? Seems steep but apparently it does. I also assume the profit margin on Powerwall is pretty reasonable.

​@@mcelectricalAccording to Google their profit margin is 30% on the energy storage

I must admit, the zappi is a user friendly charger.

Try password reset before you log in?

Thanks Graham. Is that because you drive long distances? Or because you don’t like the thought of an EV?

3-Phase has both its advantages and disadvantages. It mostly depends on your load requirements as to what is best for you. If its a large house with a ducted AC system, plans for a pool with a heat pump, EVs etc then 3-phase is the way to go as you will have a higher draw capacity if needed. That said most houses are single-phase and run just fine. Personally, I am on single-phase, use an average of 50kWh a day, have 12kW solar + 2x TPW2s, 2x EVs and am fully electric for cooking and hot water (heat pump). So it can be done on a single-phase connection. I would go 3-phase myself if I had the choice. While TPW3 is single-phase backup only now. There are some other great inverter/battery alternatives you could consider. My best advice is to find a reputable local installer and pay them to rough-in as part of the build and advise you as to the best solution for your needs. Don't get the builders sparky to pre-wire for solar. mcelectrical.com.au/blog/solar-on-a-new-build-home/

@@Yorick_Mark Thanks for the reply ..much appreciated!

@dan23haslin25 Happy to help.

Yeh vehicle to grid will take off soon. I was at BYD in Shenzhen talking with their inverter department and battery box department about this yesterday. They believe home batteries are still going to be a major part of the transition, mainly because your car will probably not be at home to soak up excess power. Also, the lifecycle of a home battery is significantly better - it’s designed to cycle once per day. A BYD car battery is designed to cycle much less than that, with the average owner switching their car after 5 or so years.

I haven’t heard about that being part of the roadmap for fronius, have you heard something?

Sometimes there is just a glitch with the app. Have you tried to log into solar.web?

Have you tried the NetZero app. It might have what you are after.

Yeh and the customer doesn’t get dc string level monitoring. More need tools.

I’m not sure about that. I’m in China at the moment and I’ve been here for a week visiting factories. Not sure what comment you are referring to but there is some “Chinese crap” inverters out there. There is also some high quality product like BYD (I’ll go there tomorrow) Huawei (today) and potentially SigEnergy (last week). Those reviews are coming.

There's a new redesign coming for the Fronius Wattpilot early 2025: facebook.com/share/v/1DPniUCb8D/

Keep it simple. Fair call!

@mcelectrical I'm just jelly, the static switch loss less power does really sound kinda cool... but moneys haha!

Ha, yeh it is a bit of an outlay.

I guess that claim needs to be qualified. What I mean a quality battery can pay itself off within the warranty period. That’s pretty hard to calculate but if you take VPP’s and the rising cost of energy into account, it seems fairly achievable when sized correctly.

We are finally reaching that tipping point in QLD where the ROI can be less than 10 years, even for there more premium battery systems. For customers where emergency backup power is a factor its a well worth it. For many people its more than just a lower power bill.

Both batteries are LFP Chemistry. Note taken for future, Thanks

Dont stress. No one is forcing anyone to buy a battery. I am also very excited about the future of V2G/V2L. But, I do believe more and more that home battery + EV V2G/H will be a symbiotic pairing and most likely people will have both as prices continue to fall. Only time will tell.

You make a good point, we were just at the SigEnergy factory and seems V2G is only a few years away. Do you think there will be no use case for home storage when V2G and V2H arrives?

I’m only new to this topic but I can imagine the scenario of free charging the home storage battery during the day while the vehicle is out and about then mostly using the home battery for peak power times in the evening and yet knowing that you have additional capacity with your EV v2x if needed eg a blackout or extended overcast/ no sunshine; and then even discharging what’s left stored in your home battery into the car (all free) then charging the Home battery up again with next days sunshine. Is all that plausible or am I missing something?🤔 14:16

@@petedawborn I think you hit the nail on the head. The V2X should allow for the car to supplement the home battery. I could even imagine that your car could be used as a power transfer system where you may charge in a location with power to your home that could be in an extended blackout due to a natural disaster.

Yes but no. It’s a waste of the Powerwall inverter. What type of Fromius do you have? The Gen24 or the Snap?

@ 2 x gen24s 13.1kw panels

Thanks Hugh! Mark explains the difference in this Short: ua-cam.com/users/shortsKQy761fuaMg?feature=share

Was it Mark or I that slipped up? Both of us should know better.

I am glad that your solar is working well for you. We always love to hear from happy customers. 😄

Yes we service all of South-East Queensland.

Even better, one of our expert consultants can meet you in person for a consultation.

This is absolutely correct. It is MUCH easier to control backup load on one phase with a 3 phase system.

We have many installs with Tesla Powerwalls on 3-phase. The single-phase backup was not the main issue. We usually recommend limited backup regardless of the battery system for the sole purpose of not draining the battery to0 quickly or overloading the battery. The issue with the PW3 on 3-phase at this stage is that it is a 10kW single-phase inverter but we may not have more than a 5kW discrepancy between phases (Energy Queensland regs). So either we must software limit the PW3 to a software-locked 5kW inverter (includes in backup) or we need 3 x PW3s to have 10kW per phase. While we have the Fronius SYMO GEN24 option that can do synchronised 3-phase backup its hard to recommend the PW3 on 3-phase. I'd say if you must have a PW3 and have 3-Phase, be patient as we have been told a 3-phase specific Powerwall model is on its way.

@@krossbolt4100 That is true. But a lot of my customers do want full house 3-phase backup if it is an option.

That is a very good question and one that Mark and I could possibly test. I wonder if there is a simple way to do that. I doubt the difference would be significant overall but 0.1kWh here or there does add up. A small delay is normal even for my TPW2s.

You are bang on the money. Labour is expensive and an easier install & commission helps a lot in keeping prices down. With that said there will always be a minimum level of fixed work required regardless of how easy the commissioning process is.