developer_mh

Guten Tag, kleiner Nachtrag: Die neuen Tarife sind jetzt da (seit 10. August). Die aktuellen Einspeisetarife können nun wie üblich aus der Liste an mitgelieferten Tarifen gewählt werden. Beste Grüße, Martin

Dear Zahra, the tariff is fine, I guess there is something wrong with the other parameters of the financial calculation. Could you provide the project file, please? You can send it to me here in the forum via private message. Kind regards, Martin

Hi Abdullah, thank you for your valuable input. Could you tell me which inverter you are referring to? In order to investigate the problem, it would be very helpful if you could provide a project file. You can send it to me here in the forum via private message, thank you. Kind regards, Martin

Hi Eduard, please send en email with your customer nr and a project file attached to our technical support team: hotline@valentin-software.com. They might be able to help you out. Kind regards, Martin

Hi Infinitech, it looks like the scaling override behaviour is not set to the default value. See this thread here: Also be sure not to use the Windows 11 from the release preview channel. Kind regards, Martin

Sure, whatever works on your machine

Hi Esteban, no problem, just write an email with your customer number and the serial number to sales@valentin-software.com and tell them what happened. They can unlock it then. Kind regards, Martin

Hallo Danov, da gibt es verschiedene Möglichkeiten in PV*SOL. Wichtig ist zu wissen, dass in PV*SOL der PV-Wechselrichter und das Batteriesystem nicht zwangsläufig zwei verschiedene Geräte sind. Es werden sozusagen die Funktionalitäten getrennt voneinander behandelt, in der PRaxis kann es sich aber um ein und dasselbe Gerät handeln, das beiden Funktionalitäten (PV-Wechselrichter und Batterie-System) in sich vereint. Hier z.B. habe ich 2 Sungrow SH8.0RT an 68 mal 300 Wp Modulen, also etwa 20 kWp: Auf der Seite "Batteriesystem" wähle ich nun ebenfalls den SH8.0RT, da ich möchte, dass der Speicher an einem der beiden Geräte hängt. An welchem, kann in der Auswahlbox gewählt werden: Damit ergibt sich dann folgendes Schaltbild: Nur von dem, der an die Anlage angeschlossen ist. Ja, das geht. In PV*SOL gibt es da keine Logik, die erkennt, welcher Wechselrichter hybrid ist und welcher nicht. In der Praxis muss man natürlich aufpassen, dass man die richtigen Geräte verplant. Beste Grüße, Martin

Hallo N_G, eine ganz genaue Aussage über den Mehrertrag wäre nur durch eine Vergleichsimulation möglich, da sich durch die Strahlung auf der Rückseite ja auch die Ströme in den Zellen, im Modul und in den Kabeln erhöhen, die dann wiederum höhere ohmsche Verluste aufweisen usw. Aber in erster Näherung bekommt man die Einstrahlung auf die Modulrückseite als Bonus hinzu, wovon aber nicht alles vom Modul umgewandelt werden kann. Hierfür steht der Bifazialitätsfaktor. Ist er 1 bzw. 100%, kann die Strahlung auf die Rückseite komplett verwertet werden (natürlich immer noch begrenzt durch den Wirkungsgrad der Zellen). Beste Grüße, Martin

Dear Patrycja, I translated your question with Google Translate: The scaling of the axes in the diagrams is done automatically. Also the grid lines are set automatically, there is no way to change that. You can, however, right click on the diagram, export the data to Excel or LibreOffice Calc, and create a diagram there. Kind regards, Martin

Hi Vishnu, you can try changing the High DPI override behavior as described here: Also apply these settings to ValentinSoftware.PV.Desktop.Wow6432.exe Kind regards, Martin

Hi Michal, thanks for your feedback. I can understand that it can be frustrating if some aspects of the software do not work as expected or if feature xyz is missing completely. And then, if you and other users report something, the only thing we can say is that "right now it is not implemented or not working, but we put it on our list/our backlog". But this is actually the truth. Our plans of developing the software go far beyond autumn of next year already. In this (flexible) plan there are literally more than 2000 feature or modification requests that are not accounted for. So, our list is really, really long, and there are hundreds of users that have ideas how to develop PV*SOL further. We really appreciate that feedback from our users, as it shows us that our software is useful and relevant. When it comes to the feature planning, of course we have to prioritize. Usually we only consider 2 to 3% of our feature request list to be worked on next. Usually we do not publish our plans to the customers, however, as in software development there is always a risk that feature xy will not be ready until the deadline. Also, sometimes it can happen that we have to change the plans due to HR reasons or market development. We release updates very regularly, as you can see from the release notes. https://valentin-software.com/en/products/pvsol-premium/ We hope these insights will help you to understand our way of handling of feature requests. Kind regards, Martin

Hi Jon, thanks for reporting this. We know that the quality of the dxf exports of the string plans is not the highest, unfortunately. If you need a high quality export, I'd recommend the svg export where you have vectors that scale losslessly. The amelioration of the dxf export of the string plans is on our list. And the overview string plan is a good idea that I will put on the list as well, thank you. Kind regards, Martin

Hi Ryan, we have just experienced the same issue here. Our first impression is that the servers of the PVGIS service are currently having problems. We will let you know as soon as we know more. Kind regards, Martin

Hi Abdel, did you mean "extrude 3D object"? If so, you have to use the polygon tool without the yellow and black stripes. You seem to have drawn a barred area, as you can see in the tree view on the left. Kind regards, Martin

Hallo N_G, ob es irgendwo aggregierte Informationen gibt, weiß ich leider auch nicht. Aber was es auf jeden Fall gibt, sind diverse Anlagen-Monitoring-Portale, die oft auch öffentliche Anlagen umfassen. Hier z.B. das Monitoring einer öffentlichen Anlage aus dem suntrol Portal für das Jahr 2020: https://www.suntrol-portal.com/de/page/hindenlang/year/2020/axis/static/output/real/p/1/chart/default Da gibt es bestimmt ausreichend Referenz-Anlagen, um sich ein Bild zu machen. Viele Grüße, Martin

Hallo aqualx, die Prozentzahlen zeigt die Direktabschattungshäufigkeit auf den Modulen. Mehr dazu vielleicht hier: und hier: Zur Frage, warum die zweite Reihe weniger Direktabschattungshäufigkeit aufweist: Spontan würde ich sagen, weil sie nicht in Richtung Haus schaut und daher weniger bzw seltener von ihm abgeschattet wird. Man kann sich das ganz gut anschauen, wenn man sich in 3D den Verlauf der Schatten anschaut. Dazu gibt es das kleine Sonnenstandstool. Beste Grüße, Martin

Hi solar_dk, the Tauro Eco 50-3-P only has one MPP tracker, see here as well: https://www.fronius.com/en/solar-energy/installers-partners/technical-data/all-products/inverters/fronius-tauro-eco/tauro-eco-50-3-p Kind regards, Martin

Dear Kjetil, perhaps this thread might shed some light in how we calculate what in terms of IRR, ROA and NPV: Hope that helps, kind regards, Martin

Hallo Ferfried, danke für den Input. Das ist in der Tat komplizierter als es sein müsste. Wir haben diesen Wunsch auch schon auf der Liste, derzeit kann ich aber noch nicht sagen, wann wir uns daran machen können. Viele Grüße, Martin

Hi again, and thanks for the project file. You can use the diagram editor in order to see when the grid feed-in occurs. In the months between January and June, and between October and December, the consumption is so low that during the day there's always PV energy excess that is fed into the grid: In the hours of the early morning and late evening there is not enough PV power to cover the load, so it must be drawn from the grid. If the load profile is close to what you expect in the real building, there is no way to avoid the grid feed-in. There will always be moments where the PV power is higher than the load. You can, however, set the maximum feed-in power clipping to 0%. In that case, the inverters will regulate down if the energy is not needed. Kind regards, Martin

Hi Sun Power Spain 365, in order to give you a more detailed answer, would it be possible for you to send me the project file? You can send it here in the forum as attachment on a private message to me. Thanks in advance, kind regards, Martin

Dear Sun Power Spain 365, it is correct that the own power consumption depends strongly on the concurrency of available PV power and the power demanded by the electric appliances. If in any hour of the year the generated PV power is higher than the demand of the electric appliances, the exceeding energy will be fed into the grid. Where else should it go? If the generated PV power is lower than the demand of the electric appliances, the missing portion of the power demand must be taken from the grid. Only if the PV power is equal to the power demand of the electric appliances at any time of the year (in all 8760 hours of the year if you simulate in one-hour steps), then the own power consumption will be 100%. It will not be possible to reduce the grid feed in to 0 kWh per year, or even near that, if you have a reasonably sized PV system and a normal load profile. You are also possibly confusing the own power consumption ratio (how much of my generated PV energy can I use?) with the solar fraction (how much of my electrical energy demand can be covered by the PV system?). These are two different numbers and mean different things. In standard cases (reasonably sized PV system and standard load profile of household or industry) you can expect around 30% of own power consumption and perhaps around 50% of solar fraction. These values change dramatically with the size of the PV system and the load profile, but a 95% to 100% own power consumption is nothing you will see in real life, except for when your PV system is very small in comparison to your energy demand. Hope that helps, kind regards, Martin

Dear Go Green BG, thanks for your question. On your screenshots everything looks fine. Also, a performance ratio of 86% is quite good. What do you mean when you want to "increase efficiency"? Do you mean the nominal efficiency of the PV module? In case you want to dive deeper into the calculation and the meaning of the performance ratio, this link might help: Kind regards, Martin

Hallo N_G, ja, das ist möglich. Dazu muss man in den Parametern zur Wirtschaftlichkeit in der Kostenbilanz bei den Investitionen auf "detaillierte Eingabe" gehen. Dann gibt es eine tabellarische Eingabemaske, in der man auch die Nutzungsdauer einer Investition eingeben kann: Dort können dann beliebige Postitionen mit unterschiedlichen Nutzungsdauern angelegt werden. Beste Grüße, Martin