developer_mh

Dear Muhammad, that is correct, the number of battery systems is limited to 20 at the moment. In the case of your system it wouldn't help to make the battery system bigger however anyway, as the produced PV energy is by far smaller than the energy consumed by the electrical appliances (781 000 kWn PV energy vs 2 174 000 kWh load). The PV energy is already completely self consumed by the electrical appliances and the charging of the battery system, only 1265 kWh go into the grid. So making the battery system bigger wouldn't change anything, as there isn't more PV energy to make use of. But besides that we put the request on our list to allow for more than 20 battery systems in future. Hope that helps, kind regards, Martin

Hi Burak, the term EEG refers to the German law "Erneuerbare Energien-Gesetz", so if your PV system isn't located in Germany, these tariffs are not applicable for your system. If your system is in Germany, however, you can choose if you want to receive the standard EEG tariffs (which basically means that you are selling the energy to your utility company to a fixed rate that is defined by the law, the EEG). Or you can choose to sell your energy directly to a third party, which is called "Direktvermarktung". In this case you receive payments from two sources: Your customer pays for the electricity that you are selling, and in addition you receive a "Marktprämie" from the utility that covers at least the difference between the energy price at which you are selling and the fixed feed-in tariff from option 1. You will find a lot of resources on the internet if you search for ""EEG Marktprämienmodell", but of course, most of it will be in German. Hope that helps, kind regards, Martin

Hallo Raimund, das hybride Betriebsverhalten (bzw. den "MultiFlow") der Fronius Symo GEN24 Geräte können wir in PV*SOL in der Form leider nicht simulieren. Was aber geht, wäre, eine Kopie des Batterie-Systems anzulegen und die Kopplungsart auf AC umzustellen. Dann würden beide PV-Wechselricher AC-seitig mit dem Batterie-System gekoppelt werden und damit würde sowohl die Alt- als auch die Neu-Anlage zur Ladung der Batterie beitragen können. Zum Anlegen einer Kopie einfach neben der System-Auswahl auf "Detaillierte Auswahl" klicken: Dann im Datenbank-Dialog eine Kopie erzeugen: Und AC-Kopplung einstellen: Das neue Batterie-System dann speichern und im Projekt verwenden. Natürlich ist das rein technisch etwas anderes als die kombinierte DC- und AC-Ladung, aber energetisch sollte es trotzdem ganz gut hinkommen. Beste Grüße, Martin

Hei Thomas, the 50% come from the view factor approach that is used in this model. In short, you have to determine how much of the reflected irradiance of surface A1 can reach surface A2, if we assume that the irradiance is evenly distributed and that the irradiance reflects from the ground evenly in all directions. You can read a more detailed description here: https://pvpmc.sandia.gov/modeling-steps/1-weather-design-inputs/plane-of-array-poa-irradiance/calculating-poa-irradiance/poa-ground-reflected/ ad 2) No, sorry. These objects do only serve as shadowing obstacles in PV*SOL, not as sources of reflected light, I am afraid. Kind regards, Martin

Hi again, thanks for the files. What happened here is that both your list separator and your decimal separator are commata (,). This can't work. Try to set the decimal separator to a point (this is a Windows system setting) or set the list separator for the export in PV*SOL to a semi-colon (;), like so: Hope that helps, kind regards, Martin

Hi Muhammad, when importing or viewing the csv data in Excel, you should make sure that the decimal separator (point or comma) in Excel is set correctly. Open the csv file that you exported from Excel with a text editor Check which decimal separator is used Open Excel (without having the csv file opened) Go to File -> Options -> Advanced and set the decimal separator as found in the csv file Then open the csv file in Excel Hope that helps, kind regards, Martin

Hi Johan, these artefacts should have been solved with the release of PV*SOL premium 2021 R3. Do have this version installed? Kind regards, Martin

Hi Johan, the company will appear in the company list box if it has at least one product of the current product type. So to create the first product of a product type for a new company you will have to select it from the company dialog, like so: Hope that helps, kind regards, Martin

Hi Alex, the first point, the feed-in / export tariff is what you get from your utility company for each kWh that you feed into the grid. Using the green plus button on the right, you can define various steps depending on the pv system size in kWp or the energy fed into the grid (kWh). The second option, the own consumption, is what you get for directly consuming your the energy that you produce with your PV system. Or, in some cases, you have to pay for using your own energy (e.g. in Germany), so there is also the option for entering a fee. Hope that helps, kind regards, Martin

Hallo bene-solar, vielen Dank für die Dateien. Da hat sich leider ein Fehler eingeschlichen, der dafür sorgt, dass bei Minutenwerten die Ergebnisse im Projektvergleich nicht mehr angezeigt werden. Wird im nächsten Release behoben. Bis dahin müsste man den Projektvergleich in Stundenwerten verwenden. Viele Grüße, Martin

Halle bene-solar, tut mir leid, ich hatte nicht gesehen, dass meine Inbox hier im Forum voll ist (hab auch keine Warnung bekommen leider). Hab ein wenig aufgeräumt und sollte wieder Nachrichten empfangen können. Beste Grüße, Martin

Hallo Busch38, Ja, das ist meines Wissens so. Der SE Designer kann diesen Detailgrad in der Simulation, bis hinunter auf die Ströme und Spannungen der einzelnen Module, bzw. sogar Zellstränge nicht leisten. Derzeit leider nein. Ist aber ein guter Punkt, den wir mal mit SolarEdge besprechen sollten, danke für den Hinweis. Viele Grüße, Martin

Hallo Ralf, ja, dieses Problem in der Darstellung gibt es leider. Es tritt nur in 3D auf, wenn auf zwei Modulflächen unterschiedliche Modultypen verwendet werden. Der Fehler bezieht sich aber tatsächlich nur auf die Anzeige, unter der Haube wird dann alles korrekt weitergerechnet (z.B. in der Verschaltung oder der Simulation). Beste Grüße, Martin

Dear Alex, in PV*SOL, there are three possibilities to calculate the economics of a PV system: For offgrid PV systems (not applicable in your case) For ongrid PV systems with net metering For ongrid PV systems with surplus feed-in Wether you have net metering or surplus feed-in depends on your country and electricity utility (or energy contracter). n your case it sounds more like a surplus feed-in. That is, self-consume a certain amount of the produced PV energy and sell the surplus to the utility or another customer. You can set the economic parameters on the page "Financial Analysis". https://help.valentin-software.com/pvsol/2021/en/pages/financial-analysis/ Hope that helps, kind regards, Martin

Dear Gianni, the problem that was reported was from PV*SOL premium 2019 R10. The most current version of our software is PV*SOL premium 2021 R3. Please consider updating, as there are a lot of bugfixes and new features. https://valentin-software.com/en/products/pvsol-premium/ Kind regards, Martin

Hi Jordn, in this case I would recommend to contact SunPower directly. https://us.sunpower.com/support/contact-page I'd guess that any information that you can find on the web will have some sort of credibility issue and won't clarify your doubts in the end. Kind regards, Martin

Hello Gytis, yes, that is possible. In the configuration page check the option "Power Optimizer" and then set the amount of modules you want to connect to each power optimizer at the end of the line: Hope that helps, kind regards, Martin

Hi Sondre, first of all let me wish you a happy and healthy new year 2021! Most of the time the difference lies in the energy consumption of the inverters during standby or night. You'll have an amount of energy that is fed into the grid (in your case 73964 kWh), but you also have a small amount of energy that is consumed by the inverters and taken from the grid. The balance of both is the "PV Generator Energy (AC grid)". Hope that helps, kind regards, Martin

Hi Rick, first of all let me wish you a happy and healthy new year 2021. Setting up offgrid or backup systems is always a bit difficult since all devices handle the responsibilities (like battery charging, providing a grid, energy flow management, PV MPP tracking, PV DC/AC conversion etc.) a bit differently. I had a look at the Schneider XW website, but there a many possible solutions to connect and combine their products. Would it be possible for you to provide an approximate schematic of what devices you want to connect in your setup? Thanks a lot in advance and kind regards, Martin

Hi Aneta, you can find the tracking system on the page "PV modules" that is visible if you uncheck the option "Use 3D design" on the page "System Type, Climate and Grid". Hope that helps, kind regards and a good start into 2021, Martin

Hi Aneta, you can find the tracking system on the page "PV modules" that is visible if you uncheck the option "Use 3D design" on the page "System Type, Climate and Grid". Hope that helps, kind regards and a good start into 2021, Martin

Dear semiht, first of all let me wish you a happy and healthy new year 2021. Could you provide me the project file, please? That would make it easier to answer your question. You can send it here in the forum by private message. Kind regards, Martin

Dear Pro GD Engenharia, I translated your post with deepl.com, I hope it is correct: Would it be possible for you to send the 3D model file over to us so that we can have a look? Please send it here in the forum by private message, thanks. Kind regards, and a good start into 2021, Martin

Hallo Johann, ein frohes und gesundes neues Jahr 2021 wünsche ich zunächst! Leider kann ich aus deinem Post nicht direkt ableiten, was genau die Frage ist, bzw. was eine hilfreiche Antwort wäre. Kannst du näher ausführen, wo es klemmt? Beste Grüße und einen guten Start, Martin

Hi Miguel, that is correct, in PV*SOL you can't design an offgrid system with just PV, charge controller and batteries. The offgrid systems are limited to the connection over an AC bus, and in general, energy-yield-wise, it should be ok to design the system as AC system in PV*SOL, even if it is DC in reality. You'd have to set the PV and battery inverter efficiencies correspondingly. In terms of "overall efficiency" it really depends on the devices that are used. See also these threads for more information: Kind regards, Martin