"Freevolt" PVGraf panels

[jflorey2]

A company called Freevolt is touting its PVGraf panels; claims they are a "hybrid cell technology – combining thin film tech with crystalline silicon tech – to produce 50% higher efficiency modules." Sounds like they are claiming they are using tandem cells, which I have not seen on any commercial PV anywhere.

Anyone heard of these guys? I am thinking that it's all marketing BS.

[peakbagger]

Lots of suspicious signs that its vaporware. Website has no technical info and many links are not even built out. A 50% increase in efficiency sounds real impressive but what is the basis?. (its not on the website). Take a look at the blog tab, all the posts appear to be in Polish. If the 50% was legit my guess is that we would be hearing a lot more about it. . .

[J.P.M.]

It's B.S. con job stuff. Ignore it.

[Skiman26]

I have those panels and was having a clipping problem so I had a conference call with an enphase engineer and an engineer from Freevolt. The microinverters used in my system were sized appropriately for my 10.4kwh system but the enphase engineering team has decided to monitor my home because the panels are making significantly more power than they see from other systems of the same kWh. It could have been a line of crap and the two were working together to make me feel good but I didn’t get that vibe.

[jflorey2]

I have those panels and was having a clipping problem so I had a conference call with an enphase engineer and an engineer from Freevolt. The microinverters used in my system were sized appropriately for my 10.4kwh system but the enphase engineering team has decided to monitor my home because the panels are making significantly more power than they see from other systems of the same kWh.

Which Enphase inverter were you using? Was it the IQ7+ that they recommend? If so that's a 240 watt (continuous) inverter; not surprising that you'd see clipping on a 300W panel.

[Ampster]

240 Watts is the maximum of the IQ7-60. the IQ7+ maxes out at 290 Watts continous. As mentioned in another post, I am using them with 345 Watt panels..I am happy with the 40kWhs per day on 90 degree days. I also have a SE facing roof. To me the important question is what is the daily production this time of year on a normal clear day.