PV Magazine In a new paper, researchers from the University of Sheffield, Imperial College London, and the University of St Andrews in the United Kingdom have conducted a detailed meta-analysis of 60 papers to investigate the most influential battery parameters and the probable off-gas characteristics to determine what kind of battery would be least hazardous. They have found that while NMC batteries release more gas than LFP, but that LFP batteries are significantly more toxic than NMC ones in absolute terms.
@richarddickinson7788Күн бұрын
At roughly $100 per panel to install Power Optimiser, works out to $1000 for a string of 10 panels, for that same $1000 you could purchase 5 more panels at roughly $200 per panel, giving you a string of 15, the output then would blitz the output of the 10 power optimised string, subject of course if you have the room for 5 extra panels.
@suny1265Күн бұрын
If you would keep it professional and take out the Girly stuff it will be much better. For solutions less then 5 Kw i see The DC with String inverter ok but anything higher definitely Microinverers. The rate of failure of Strings inverters is 20% si in 20 years as is calculated in Europe you will definitely live to see the day at leas once in 20 years your Inverter goes dead. Optimisers also go dead, and forget about warranty today with after sale changes to the User agreements. my mindset is witch will cost me less in any case of failure and that is Micro inverters even if i have to change it all out plus installation cost included. in the US you must have some discounts for the DC String because in Europe Miro is almost 2 times cheaper-- so if its 2 times cheaper and it gets damaged i am still in the budget cost of only one DC string system. Make sense so far? And also if the String Inverter gets changed you have to change some optimisers also depending on producer so Micro wins again .
@teemum.9023Күн бұрын
I have 1000 square meters of land. I use everything
@denniswdoolinsr29292 күн бұрын
I like solar. That looks like shit all over the yard!
@markocaribe2 күн бұрын
Well Done! Appreciate the facts as they are!
@libertyss322 күн бұрын
The problem I am having is with my ground mount, there is a power line above my array that I cannot move or cut down if I want to. I am curious if I turn my half cut perc cell panels sideways or depending on the diode arrangement turn them sideways or keep them vertically.
@nyeleskettes3 күн бұрын
Now swap the strings and redoo the test. Every panel has a % of variance in the output, it was absolutetly not proven that those differences do not come from panels. On one side we only saw Wac on the other side both Wdc and Wac. It would have been a proof that the left side is just producing as much Wdc as the right side with optimizers. If the swapped outcome shows the same we can conclude, otherwise this test has a flaw.
@MoeinEsther3 күн бұрын
Why you have 26K subs , you should have over 500K , because info you are giving is so helpful and so accurate , also very very honest. TNX. I use 5kw Solar in Thailand String after watch your videos and with the price of less than 4500 USD it cut my bill over 50% up to 65 % and I use AC during Day most of the time.
@DeckEdge3 күн бұрын
At time stamp 2:43 what ground mount is that????
@kn4cc7553 күн бұрын
Why would I install ANY expensive, critical devices that, as you say, are guaranteed to fail. DC string, AC micro or otherwise? I have yet to see any ROI projections that include these costs. Solar as sold today is a fraud.
@jvlivtriple3 күн бұрын
Great video. A powerwall 3 just arrived at my house. There were lithium-ion hazard warning labels on the box. I know this isn't a spec sheet but it is a good indication of which batteries Tesla is using in the Powerwall 3.
@hectorarcelus66023 күн бұрын
You will love Bigelow.
@Novoworks4 күн бұрын
$.17? We paid .102/kwh here in Allen/Lucas last few years -- now at .122
@devilish08114 күн бұрын
I’m soooo lost! Lol
@prashp1434 күн бұрын
POs with String make sense when batteries are involved, right? Also, POs' performance in ac is also dictated by the inverter.
@hectorarcelus66024 күн бұрын
.07 in Rio Rico with Unisource Energy
@alienhawkq46905 күн бұрын
Wait six months and get one of the new inverters with software that can switch the DC into smaller blocks creating a better AC sine wave. They are getting over 99% efficiency. While 95% to 99% may not sound like much, over a year, it adds up.
@wazup33332 күн бұрын
Can you explain?
@alienhawkq46902 күн бұрын
@@wazup3333 I cannot. This video goes into detail about resonance and soft switching. kzread.info/dash/bejne/opituqebh9K8pqg.html. My understanding is that a few companies have proprietary software that can change the switching frequency within a single sine wave and maximize use of resonance in order to reduce losses. I just found this video which a stock pump for one of the companies but it has a good explanation kzread.info/dash/bejne/ZH6sxLCiZM_Uhdo.html.
@user-yk1yt5ew8h5 күн бұрын
I want to take knowledge about solar power from you?
@williamweiss10966 күн бұрын
Ever have hail???
@vygandaspudzmys10866 күн бұрын
Energy supplyers price to me in Lithuania are 0,25€/kwh. I get back all 100% not used power from supplyer for 0,06€/kwh. And still if I cant consume my all generetad eletricity after 2yrs I can get cash from goverment like 0,18€/kwh😊
@sophiegrisom7 күн бұрын
Excellent and thorough testing. I know this took much time to plan, execute, and report, so many thanks. Optimizers cost ~50% of panel cost, so the gain of 10% is hard to pencil out, though many other considerations like other installation costs and limited space for panels.
@cornpop11577 күн бұрын
Wow women talk way too much, without saying a damn thing. I guess it's all about feelings And not the transference of information.
@jamesjoyce78977 күн бұрын
Great video, with the outcome that the micro inverter technology is incrementally more efficient while solar energy is being generated. What the efficiency variance between the technologies factoring in solar battery charging and pulling the power out for AC use when solar power is not being generated.
@Dzordzikk7 күн бұрын
Hi, on my 10 kWp system I was used only 5 pcs of Tigo optimizer on panels that have some shade in day, on all others not, so I spend only a few money, not thousands USD. It doesn´t necessary to use this devices on panels that haven´t any shade per day, or only for a few minutes.
@diydantex61508 күн бұрын
What is the price difference between the 2 systems?
@cruizgonzalez50048 күн бұрын
Hello Martyna, that was a good presentation . I have a storage system on my roof it is only a 4.85Kw system but I manage to reduce line loss from roof to invertor. And managed to maximize D.C. Battery power to the point that I can run an A/C System during the day with the help of the battery pulsing only to jump start the A/C unit. But if I had 4 more panels and a bigger battery system I can live grid tie or off grid with no problems. You see here in Nevada you need A/C most of the year. And the power company is always raising rates. have anyone one out with a high voltage Residentual battery with this spec. ? Storage SE7600A-USS high D.C. voltage (nom V. 400DCV, ). The size of battery backup that I would need is a 30- 40 kwh unit. This would allow me to run grid tied during the day and at night I can run off grid with no problems at all.Can you help me in this matter?
@johng80498 күн бұрын
problem mico inverter goes bad labor for a roof top system $ and the weather can break them more easy. Ok would the same applies for optimizer are they not installed behind the panels on the roof? Now lets say your system is ground mount the $ savings of a mico inverter on the front end cost could add up to lot faster break even point. Ground mount also would run lot cooler
@infidibulum7268 күн бұрын
Not a valid argument for a ground mount system 500' from the Grid Interface. DC losses at nearly 70 amps over 500' exceed that of AC transport of the same distance. I've 44 Silfab 380 elite PV panels (made in the US in Burlington, WA) using all ENPHASE equipment (22 IQ7+ microinverters, 2 gateways), grid tied and installed by Solar Blossom of Arlington, Washington. Any repair can be made with a step ladder. Since July 2022, 30 MWh of production without a single production fault, one combiner reporting issue that was expeditiously repaired by Solar Blossom. BEST investment I've ever made! Point is, each PV system has it's own merits and can't necessarily be compared to each other.
@amigatommy78 күн бұрын
What type is used with Franklin Home?
@joshua98489 күн бұрын
This is insane, it looks like shit on a very expensive home where those who can afford the home this solar crap is installed on really aren’t looking to save money. Who are you selling this shit to?
@firstbigbarney9 күн бұрын
I don't believe net metering is fair to ALL customers...You should only be credited the avoided cost ... The part of your bill for supply is the only offset...The utility cost of the energy at that time... You should get 0 off the distribution portion of your bill..
@thomasjacques52869 күн бұрын
I've timed my 2018 3-ton Lennox AC and been on HOT/HUMID days here in St Louis my AC will run about 2 times an hour for about 7 minutes with my thermostat set at 75F. During an outage, I would probably bump my temp to 77F or 78F. We have an 1800 sq ft 2 bed/bath VILLA with tinted windows and plantation shutters and ceiling fans. I can easily confirm that data with my Enphase and utility apps since we have a smart meter that reports usage in 15-minute intervals. I think most folks faced with an outage in bad weather will cut their consumption considerably.
@chada4729 күн бұрын
A lot of people aren't thinking about what can be saved. I live in Texas in the country and the house was built using propane to heat water and the house. My house has two hot water heaters and two propane central heaters. My electric bill was about $1500 a year before solar. I added 18.8kw in solar on my metal shop building 30X50 with 3 inverters. I converted the hot water heating to electric $800 total cost. I had to replace my aging AC system, so it was converted to AC heat pump with the propane heat as back up. I did all the work myself for the solar, $10K-30%=$7K. My total savings per year wiping out the propane and electric bills was $3600 a year so pay back in 2 years!
@tjssjc24710 күн бұрын
I totally agree with you on string inverters. All inverters fail sooner or later and working at ground level is much simpler. I've had a string inverter system for 24 years. It was upgraded 8 years ago and I'm currently working to replace the SMA inverter with a Powerwall 3. The current inverter is maxed out so I hope to be able to add panels with the Powerwall.
@BRUniversalU10 күн бұрын
Thank you @Solartimeusa Martyna for your insights! Would you be able to comment on with advantage of having string over micro inverters with battery ? do you suggest which would be better . Hope my q is clear .
@mytuber8110 күн бұрын
Great content. I would like the excel spreadsheet if you don’t mind. Thank you Martyna.
@AnonymousMiner210 күн бұрын
3:20 I disagree. Microinverters could be a huge help. Example enphase iq8. They could give you power without batteries and without grid. Also monitor each panels degradation with data over time to monitor issues. They are also very reliable. There are always benefits for each application.
@AaronBlankenship11 күн бұрын
You presented and speak well, and the content is good. But the editing of the video was just so obnoxious I had to turn it off.
@tdobson88812 күн бұрын
The problems you point out about micro inverters is no different than string inverters both can fail and the company can Go out of business. If you have 1 string inverter and it failed your system is down until it's replaced when you have 30 micro inverters If one fails you still have 29 panels working and as far as trying to find the bad one as long as the inverters are mapped properly that's easy and one last thing yes you have 30 points of failure but the odds are very low that All will fail at the same time If you only have one string inverter only one needs to fail and you are down. You are very right about getting inverters from quality manufacturers but there is never a guarantee for any manufacturer about changing product designs at any time.
@thomasjacques528612 күн бұрын
Will a Tesla PW3 play nice with my Enphase IQ8A Inverters and app?
@up-startup17512 күн бұрын
I am solar permit designer in india and I appreciate your test it is eye Operner for me because I thought there are significant energy dropped in inverter system if there Shadow shade on pv system but there no much different. But in term of costing it is worth. And keep working and testing for ❤(inverter) of solar system. Thank you
@hjooy12 күн бұрын
Please consider a class-A high efficiency string inverter such as Huawei. The string inverter with optimizers will always win.
@mikezhengcc13 күн бұрын
where is the rest of the video? thanks!
@LinasR13 күн бұрын
Emmmm, has The speaker Lithuanian roots?
@JohnDoe9587613 күн бұрын
Didn't watch the video. There's no debate, at least, not with me. When/If I ever get solar installed, I am absolutely NOT, doing the micro-inverters. It's just an extra piece of hardware, that can go bad. No thanks. I'll keep my system, as simple as possible.....and part of that goal, is minimizing the amount of hardware that has the potential to go bad on me.
@michaelswonderfulworld13 күн бұрын
We have had 30 enphase micro inverters installed 8 years ago and never needed a service guy to come back. Very reliable system for us and our next house will get the same.
@wazup33332 күн бұрын
8 years is not a long enough time for solar
@michaelswonderfulworld2 күн бұрын
@@wazup3333 true but a lot of solar owners have lots of issues long before 8 years.
@wazup33332 күн бұрын
@@michaelswonderfulworld what kind of issues?
@harold-miller14 күн бұрын
Great info! I would also add that the ability to DC couple batteries is so much more efficient. I believe that micro inverters paired with batteries is not the right solution as you are having to convert the electricity 3 times (at the panel to AC, when charging the batteries back to DC, and then back to AC when discharging the batteries). A system like the Tesla PW3 makes all of this a single step process depending on what the home needs. If the battery needs power, the panels feed the PW3 directly with DC power. If the battery is full, the power is simply inverted once and fed directly to the panel. Each time you are having to convert, you’re loosing about 3%.
@okrakai14 күн бұрын
is the phrase mute point correct? isn't it moot point?
@nalim2715 күн бұрын
1044W versos 675 W is "Little bit higher"? I want to be her employee ans asked for little big higher salary! :-) It is almost 55% higher with optimizers, that is significantly higher! A little bit higher is something in rage 5%, not in range 55%!
Пікірлер
PV Magazine In a new paper, researchers from the University of Sheffield, Imperial College London, and the University of St Andrews in the United Kingdom have conducted a detailed meta-analysis of 60 papers to investigate the most influential battery parameters and the probable off-gas characteristics to determine what kind of battery would be least hazardous. They have found that while NMC batteries release more gas than LFP, but that LFP batteries are significantly more toxic than NMC ones in absolute terms.
At roughly $100 per panel to install Power Optimiser, works out to $1000 for a string of 10 panels, for that same $1000 you could purchase 5 more panels at roughly $200 per panel, giving you a string of 15, the output then would blitz the output of the 10 power optimised string, subject of course if you have the room for 5 extra panels.
If you would keep it professional and take out the Girly stuff it will be much better. For solutions less then 5 Kw i see The DC with String inverter ok but anything higher definitely Microinverers. The rate of failure of Strings inverters is 20% si in 20 years as is calculated in Europe you will definitely live to see the day at leas once in 20 years your Inverter goes dead. Optimisers also go dead, and forget about warranty today with after sale changes to the User agreements. my mindset is witch will cost me less in any case of failure and that is Micro inverters even if i have to change it all out plus installation cost included. in the US you must have some discounts for the DC String because in Europe Miro is almost 2 times cheaper-- so if its 2 times cheaper and it gets damaged i am still in the budget cost of only one DC string system. Make sense so far? And also if the String Inverter gets changed you have to change some optimisers also depending on producer so Micro wins again .
I have 1000 square meters of land. I use everything
I like solar. That looks like shit all over the yard!
Well Done! Appreciate the facts as they are!
The problem I am having is with my ground mount, there is a power line above my array that I cannot move or cut down if I want to. I am curious if I turn my half cut perc cell panels sideways or depending on the diode arrangement turn them sideways or keep them vertically.
Now swap the strings and redoo the test. Every panel has a % of variance in the output, it was absolutetly not proven that those differences do not come from panels. On one side we only saw Wac on the other side both Wdc and Wac. It would have been a proof that the left side is just producing as much Wdc as the right side with optimizers. If the swapped outcome shows the same we can conclude, otherwise this test has a flaw.
Why you have 26K subs , you should have over 500K , because info you are giving is so helpful and so accurate , also very very honest. TNX. I use 5kw Solar in Thailand String after watch your videos and with the price of less than 4500 USD it cut my bill over 50% up to 65 % and I use AC during Day most of the time.
At time stamp 2:43 what ground mount is that????
Why would I install ANY expensive, critical devices that, as you say, are guaranteed to fail. DC string, AC micro or otherwise? I have yet to see any ROI projections that include these costs. Solar as sold today is a fraud.
Great video. A powerwall 3 just arrived at my house. There were lithium-ion hazard warning labels on the box. I know this isn't a spec sheet but it is a good indication of which batteries Tesla is using in the Powerwall 3.
You will love Bigelow.
$.17? We paid .102/kwh here in Allen/Lucas last few years -- now at .122
I’m soooo lost! Lol
POs with String make sense when batteries are involved, right? Also, POs' performance in ac is also dictated by the inverter.
.07 in Rio Rico with Unisource Energy
Wait six months and get one of the new inverters with software that can switch the DC into smaller blocks creating a better AC sine wave. They are getting over 99% efficiency. While 95% to 99% may not sound like much, over a year, it adds up.
Can you explain?
@@wazup3333 I cannot. This video goes into detail about resonance and soft switching. kzread.info/dash/bejne/opituqebh9K8pqg.html. My understanding is that a few companies have proprietary software that can change the switching frequency within a single sine wave and maximize use of resonance in order to reduce losses. I just found this video which a stock pump for one of the companies but it has a good explanation kzread.info/dash/bejne/ZH6sxLCiZM_Uhdo.html.
I want to take knowledge about solar power from you?
Ever have hail???
Energy supplyers price to me in Lithuania are 0,25€/kwh. I get back all 100% not used power from supplyer for 0,06€/kwh. And still if I cant consume my all generetad eletricity after 2yrs I can get cash from goverment like 0,18€/kwh😊
Excellent and thorough testing. I know this took much time to plan, execute, and report, so many thanks. Optimizers cost ~50% of panel cost, so the gain of 10% is hard to pencil out, though many other considerations like other installation costs and limited space for panels.
Wow women talk way too much, without saying a damn thing. I guess it's all about feelings And not the transference of information.
Great video, with the outcome that the micro inverter technology is incrementally more efficient while solar energy is being generated. What the efficiency variance between the technologies factoring in solar battery charging and pulling the power out for AC use when solar power is not being generated.
Hi, on my 10 kWp system I was used only 5 pcs of Tigo optimizer on panels that have some shade in day, on all others not, so I spend only a few money, not thousands USD. It doesn´t necessary to use this devices on panels that haven´t any shade per day, or only for a few minutes.
What is the price difference between the 2 systems?
Hello Martyna, that was a good presentation . I have a storage system on my roof it is only a 4.85Kw system but I manage to reduce line loss from roof to invertor. And managed to maximize D.C. Battery power to the point that I can run an A/C System during the day with the help of the battery pulsing only to jump start the A/C unit. But if I had 4 more panels and a bigger battery system I can live grid tie or off grid with no problems. You see here in Nevada you need A/C most of the year. And the power company is always raising rates. have anyone one out with a high voltage Residentual battery with this spec. ? Storage SE7600A-USS high D.C. voltage (nom V. 400DCV, ). The size of battery backup that I would need is a 30- 40 kwh unit. This would allow me to run grid tied during the day and at night I can run off grid with no problems at all.Can you help me in this matter?
problem mico inverter goes bad labor for a roof top system $ and the weather can break them more easy. Ok would the same applies for optimizer are they not installed behind the panels on the roof? Now lets say your system is ground mount the $ savings of a mico inverter on the front end cost could add up to lot faster break even point. Ground mount also would run lot cooler
Not a valid argument for a ground mount system 500' from the Grid Interface. DC losses at nearly 70 amps over 500' exceed that of AC transport of the same distance. I've 44 Silfab 380 elite PV panels (made in the US in Burlington, WA) using all ENPHASE equipment (22 IQ7+ microinverters, 2 gateways), grid tied and installed by Solar Blossom of Arlington, Washington. Any repair can be made with a step ladder. Since July 2022, 30 MWh of production without a single production fault, one combiner reporting issue that was expeditiously repaired by Solar Blossom. BEST investment I've ever made! Point is, each PV system has it's own merits and can't necessarily be compared to each other.
What type is used with Franklin Home?
This is insane, it looks like shit on a very expensive home where those who can afford the home this solar crap is installed on really aren’t looking to save money. Who are you selling this shit to?
I don't believe net metering is fair to ALL customers...You should only be credited the avoided cost ... The part of your bill for supply is the only offset...The utility cost of the energy at that time... You should get 0 off the distribution portion of your bill..
I've timed my 2018 3-ton Lennox AC and been on HOT/HUMID days here in St Louis my AC will run about 2 times an hour for about 7 minutes with my thermostat set at 75F. During an outage, I would probably bump my temp to 77F or 78F. We have an 1800 sq ft 2 bed/bath VILLA with tinted windows and plantation shutters and ceiling fans. I can easily confirm that data with my Enphase and utility apps since we have a smart meter that reports usage in 15-minute intervals. I think most folks faced with an outage in bad weather will cut their consumption considerably.
A lot of people aren't thinking about what can be saved. I live in Texas in the country and the house was built using propane to heat water and the house. My house has two hot water heaters and two propane central heaters. My electric bill was about $1500 a year before solar. I added 18.8kw in solar on my metal shop building 30X50 with 3 inverters. I converted the hot water heating to electric $800 total cost. I had to replace my aging AC system, so it was converted to AC heat pump with the propane heat as back up. I did all the work myself for the solar, $10K-30%=$7K. My total savings per year wiping out the propane and electric bills was $3600 a year so pay back in 2 years!
I totally agree with you on string inverters. All inverters fail sooner or later and working at ground level is much simpler. I've had a string inverter system for 24 years. It was upgraded 8 years ago and I'm currently working to replace the SMA inverter with a Powerwall 3. The current inverter is maxed out so I hope to be able to add panels with the Powerwall.
Thank you @Solartimeusa Martyna for your insights! Would you be able to comment on with advantage of having string over micro inverters with battery ? do you suggest which would be better . Hope my q is clear .
Great content. I would like the excel spreadsheet if you don’t mind. Thank you Martyna.
3:20 I disagree. Microinverters could be a huge help. Example enphase iq8. They could give you power without batteries and without grid. Also monitor each panels degradation with data over time to monitor issues. They are also very reliable. There are always benefits for each application.
You presented and speak well, and the content is good. But the editing of the video was just so obnoxious I had to turn it off.
The problems you point out about micro inverters is no different than string inverters both can fail and the company can Go out of business. If you have 1 string inverter and it failed your system is down until it's replaced when you have 30 micro inverters If one fails you still have 29 panels working and as far as trying to find the bad one as long as the inverters are mapped properly that's easy and one last thing yes you have 30 points of failure but the odds are very low that All will fail at the same time If you only have one string inverter only one needs to fail and you are down. You are very right about getting inverters from quality manufacturers but there is never a guarantee for any manufacturer about changing product designs at any time.
Will a Tesla PW3 play nice with my Enphase IQ8A Inverters and app?
I am solar permit designer in india and I appreciate your test it is eye Operner for me because I thought there are significant energy dropped in inverter system if there Shadow shade on pv system but there no much different. But in term of costing it is worth. And keep working and testing for ❤(inverter) of solar system. Thank you
Please consider a class-A high efficiency string inverter such as Huawei. The string inverter with optimizers will always win.
where is the rest of the video? thanks!
Emmmm, has The speaker Lithuanian roots?
Didn't watch the video. There's no debate, at least, not with me. When/If I ever get solar installed, I am absolutely NOT, doing the micro-inverters. It's just an extra piece of hardware, that can go bad. No thanks. I'll keep my system, as simple as possible.....and part of that goal, is minimizing the amount of hardware that has the potential to go bad on me.
We have had 30 enphase micro inverters installed 8 years ago and never needed a service guy to come back. Very reliable system for us and our next house will get the same.
8 years is not a long enough time for solar
@@wazup3333 true but a lot of solar owners have lots of issues long before 8 years.
@@michaelswonderfulworld what kind of issues?
Great info! I would also add that the ability to DC couple batteries is so much more efficient. I believe that micro inverters paired with batteries is not the right solution as you are having to convert the electricity 3 times (at the panel to AC, when charging the batteries back to DC, and then back to AC when discharging the batteries). A system like the Tesla PW3 makes all of this a single step process depending on what the home needs. If the battery needs power, the panels feed the PW3 directly with DC power. If the battery is full, the power is simply inverted once and fed directly to the panel. Each time you are having to convert, you’re loosing about 3%.
is the phrase mute point correct? isn't it moot point?
1044W versos 675 W is "Little bit higher"? I want to be her employee ans asked for little big higher salary! :-) It is almost 55% higher with optimizers, that is significantly higher! A little bit higher is something in rage 5%, not in range 55%!