Q.Cell Q.Tron 435w panels w integrated microinverter? vs vsun or jinko + enphase iq8?

[markm75]

is anyone familiar with this type of panel. I have a local solar company (estb 2016) giving a fairly decently priced quote for 15.48 kw output and 18,000 kwh annual usage ($40,248 overall cost about $2.25 per watt)

They are also showing a Q.home combiner (model 80 G1)?, up to 64a input of solar and 144ac modules etc

The panel spec im seeing shows low 25 year expected degradation of like 89%, in thoery i guess (Q.TRON BLK M-G2.H1+/AC 430 x 36 modules)

The local provider says that q.cells is the most trusted panel in the usa with a massive plant outside atlanta, but will they be around in 10 years etc? They can cut costs by using a single source for both.

But a combination panel, sounds like double trouble if issues?

Also, vsun, apparently they wont be available next year in the usa due to china issues?

My model comparable is (Eagle 54HM G6 440watt JKM440N-54HL4-B) and Vsun Vsun 440 watt vsun440n-108bmh-bb and Enphase IQ8SP-MC4-DS-0002-02 or iq8a

[organic farmer]

is anyone familiar with this type of panel. I have a local solar company giving a fairly decently priced quote for 15.48 kw output and 18,000 kwh annual usage ($40,248 overall cost about $2.25 per watt)

$2.25 per watt is not bad.

... The local provider says that q.cells is the most trusted panel in the usa with a massive plant outside atlanta, but will they be around in 10 years etc?

Your provider is a salesman. LIke all horse traders and used car salesmen that is his job.

He is not an Electrical Engineer.

Every year new systems are introduced and marketed.

Which of them might be 'trusted' changes every quarter.

I would want to meet their techs, ask them what degrees they have.

A standard fly-by-night company will have a herd of self-trained or OJT techs, with zero knowledge of how it all works.

... But a combination panel, sounds like double trouble if issues?

If they have a warehouse where they can test your panel, then it might be easy for them to troubleshoot the panel ten years from now. But in reality, once it is installed. Nobody will remove it to ship back to the factory for troubleshooting.

You are right to be concerned.

... Also, vsun, apparently they wont be available next year in the usa due to china issues?

Oh cool. I always like talking to folks with a reliable crystal ball. See if they can give you any stock market tips, since they know all about the future.

[markm75]

$2.25 per watt is not bad.





Your provider is a salesman. LIke all horse traders and used car salesmen that is his job.

He is not an Electrical Engineer.

Every year new systems are introduced and marketed.

Which of them might be 'trusted' changes every quarter.

I would want to meet their techs, ask them what degrees they have.

A standard fly-by-night company will have a herd of self-trained or OJT techs, with zero knowledge of how it all works.





If they have a warehouse where they can test your panel, then it might be easy for them to troubleshoot the panel ten years from now. But in reality, once it is installed. Nobody will remove it to ship back to the factory for troubleshooting.

You are right to be concerned.





Oh cool. I always like talking to folks with a reliable crystal ball. See if they can give you any stock market tips, since they know all about the future.

Yeah there are some red flags here, they did quote using jinko 440 panels + iq8s of around 44,000$ usd for 18,500 production (15.5kw i think), 36 panels again, which still was about $4k less than anyone else.

They were established in 2016, but have good local reviews and energysage reviews, so im unsure, unknown their level of knowledge as you said.

I still feel like integrated could be trouble with the q cell idea.

Other threads in other places outside of here seem to say the qcells are solid though.

I did the math wrong, i think its the cost / the ouput power not kwhr produced, so for instance, they quoted jinkos + iq8x's, its $2.80/watt

[EnergyC]

Stay with Qcells AC modules, but make sure the embedded microinverter is sized right and the branching is clean

is anyone familiar with this type of panel. I have a local solar company (estb 2016) giving a fairly decently priced quote for 15.48 kw output and 18,000 kwh annual usage ($40,248 overall cost about $2.25 per watt)

They are also showing a Q.home combiner (model 80 G1)?, up to 64a input of solar and 144ac modules etc

The panel spec im seeing shows low 25 year expected degradation of like 89%, in thoery i guess (Q.TRON BLK M-G2.H1+/AC 430 x 36 modules)

The local provider says that q.cells is the most trusted panel in the usa with a massive plant outside atlanta, but will they be around in 10 years etc? They can cut costs by using a single source for both.

But a combination panel, sounds like double trouble if issues?

Also, vsun, apparently they wont be available next year in the usa due to china issues?

My model comparable is (Eagle 54HM G6 440watt JKM440N-54HL4-B) and Vsun Vsun 440 watt vsun440n-108bmh-bb and Enphase IQ8SP-MC4-DS-0002-02 or iq8a

[markm75]

Stay with Qcells AC modules, but make sure the embedded microinverter is sized right and the branching is clean

I ended up getting Hyundai 440 panels n 8x inverters from the same company. Or will be, contract signed etc

40 panels 17.5kw output. First year production w aurora model 20000 kwhr(seems optimistic)

[J.P.M.]

I ended up getting Hyundai 440 panels n 8x inverters from the same company. Or will be, contract signed etc

40 panels 17.5kw output. First year production w aurora model 20000 kwhr(seems optimistic)

Have you checked out what a PVWatts modeling suggests as an annual output?
Once you get all the different array layout orientations correct, you'll only need one run for each orientation and then sum the results to get an idea of nominal annual system production in terms of kWh/yr.

[III]

The QCells integrated micro was only released this year or maybe it was late last year, but Enphase have been doing micros for 17 years. There's been at least a dozen companies try a microinverter but Enphase has won this market segment and I wouldn't be field testing a Qcells unit for them. QCells panels are fine, but they are not experienced in making microinveters.

So " Q.Cell Q.Tron 435w panels w integrated microinverter? vs vsun or jinko + enphase iq8?" I would go for IQ8's on any of those panels, or a string inverter if the enphase way costs too much, but not a non-enphase micro from anyone, and definitely not a new, untested micro!

[markm75]

Have you checked out what a PVWatts modeling suggests as an annual output?
Once you get all the different array layout orientations correct, you'll only need one run for each orientation and then sum the results to get an idea of nominal annual system production in terms of kWh/yr.

I have tried using pvwatts, but i get confused on how to get it to generate a kwhr for the first production year estimate.. i try to match up the specs on the hyundai 440 panels with their dimensions but it never matches up quite right (IE: cant fit 28 on the garage), nor does the map seem to allow you to select the garage roof and the house, one or the other, so best i can do is put in 40 total panels and the watts on the panels.. for the output max on on the inverter it has 5500, but i dont think thats right for the iq8x

[III]

I have tried using pvwatts, but i get confused on how to get it to generate a kwhr for the first production year estimate.. i try to match up the specs on the hyundai 440 panels with their dimensions but it never matches up quite right (IE: cant fit 28 on the garage), nor does the map seem to allow you to select the garage roof and the house, one or the other, so best i can do is put in 40 total panels and the watts on the panels.. for the output max on on the inverter it has 5500, but i dont think thats right for the iq8x

This is just restating what J.P.M said in more detailed steps .....

1. Set your location on the map in pvwatts. You are not trying to select your house or garage, jsut the neighbourhood is good enough, the location is for weather data.
2. Set your panel sizes for one array, e.g. house. if you have 10 440W panels on the house put in 4.4kW for the size.
3. Put in tilt and azimuth etc
4. Under advanced, put in DC/AC ratio according to your inverters. If you have 440W panels and IQ8X (380W) then put in 440/380=1.16
5. Repeat for the other arrays as needed, e.g. if you have some on the house, some on the garage, do the above twice. Then add the estimates up to get your total per month/year.